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[elpa] master a95c2ce 42/66: Reorganize tests layout


From: Dmitry Gutov
Subject: [elpa] master a95c2ce 42/66: Reorganize tests layout
Date: Tue, 13 Jan 2015 02:44:59 +0000

branch: master
commit a95c2ceb924301749f440d33daf5de27eb47a195
Author: Dmitry Gutov <address@hidden>
Commit: Dmitry Gutov <address@hidden>

    Reorganize tests layout
---
 Makefile                                      |    4 +-
 company-tests.el                              |  939 +------------------------
 test/all.el                                   |   28 +
 test/async-tests.el                           |  161 +++++
 test/clang-tests.el                           |   11 +
 test/core-tests.el                            |  420 +++++++++++
 company-elisp-tests.el => test/elisp-tests.el |    9 +-
 test/frontends-tests.el                       |  289 ++++++++
 test/keywords-tests.el                        |   32 +
 test/template-tests.el                        |   91 +++
 test/transformers-tests.el                    |   58 ++
 11 files changed, 1098 insertions(+), 944 deletions(-)

diff --git a/Makefile b/Makefile
index c52be4b..fada444 100644
--- a/Makefile
+++ b/Makefile
@@ -20,11 +20,11 @@ clean:
        @rm -rf company-*/ company-*.tar company-*.tar.bz2 *.elc ert.el
 
 test:
-       ${EMACS} -Q -nw -L . -l company-tests.el -l company-elisp-tests.el \
+       ${EMACS} -Q -nw -L . -l test/all.el \
        --eval "(let (pop-up-windows) (ert t))"
 
 test-batch:
-       ${EMACS} -Q --batch -L . -l company-tests.el -l company-elisp-tests.el \
+       ${EMACS} -Q --batch -L . -l test/all.el \
        --eval "(ert-run-tests-batch-and-exit '(not (tag interactive)))"
 
 compile:
diff --git a/company-tests.el b/company-tests.el
index 273ddda..f0d669d 100644
--- a/company-tests.el
+++ b/company-tests.el
@@ -1,8 +1,8 @@
-;;; company-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+;;; company-tests.el --- company-mode test helpers  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 2011, 2013-2014  Free Software Foundation, Inc.
 
-;; Author: Nikolaj Schumacher
+;; Author: Dmitry Gutov
 
 ;; This file is part of GNU Emacs.
 
@@ -19,904 +19,11 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
-
-;;; Commentary:
-;;
-
-;;; Code:
-
-(require 'ert)
 (require 'company)
-(require 'company-keywords)
-(require 'company-clang)
 
 (defun company--column (&optional pos)
   (car (company--col-row pos)))
 
-;;; Core
-
-(ert-deftest company-sorted-keywords ()
-  "Test that keywords in `company-keywords-alist' are in alphabetical order."
-  (dolist (pair company-keywords-alist)
-    (when (consp (cdr pair))
-      (let ((prev (cadr pair)))
-        (dolist (next (cddr pair))
-          (should (not (equal prev next)))
-          (should (string< prev next))
-          (setq prev next))))))
-
-(ert-deftest company-good-prefix ()
-  (let ((company-minimum-prefix-length 5)
-        company-abort-manual-when-too-short
-        company--manual-action            ;idle begin
-        (company-selection-changed t))    ;has no effect
-    (should (eq t (company--good-prefix-p "address@hidden")))
-    (should (eq nil (company--good-prefix-p "abcd")))
-    (should (eq nil (company--good-prefix-p 'stop)))
-    (should (eq t (company--good-prefix-p '("foo" . 5))))
-    (should (eq nil (company--good-prefix-p '("foo" . 4))))
-    (should (eq t (company--good-prefix-p '("foo" . t))))))
-
-(ert-deftest company--manual-prefix-set-and-unset ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (company-manual-begin)
-      (should (equal "ab" company--manual-prefix))
-      (company-abort)
-      (should (null company--manual-prefix)))))
-
-(ert-deftest company-abort-manual-when-too-short ()
-  (let ((company-minimum-prefix-length 5)
-        (company-abort-manual-when-too-short t)
-        (company-selection-changed t))    ;has not effect
-    (let ((company--manual-action nil))   ;idle begin
-      (should (eq t (company--good-prefix-p "address@hidden")))
-      (should (eq t (company--good-prefix-p '("foo" . 5))))
-      (should (eq t (company--good-prefix-p '("foo" . t)))))
-    (let ((company--manual-action t)
-          (company--manual-prefix "abc")) ;manual begin from this prefix
-      (should (eq t (company--good-prefix-p "address@hidden")))
-      (should (eq nil (company--good-prefix-p "ab")))
-      (should (eq nil (company--good-prefix-p 'stop)))
-      (should (eq t (company--good-prefix-p '("foo" . 4))))
-      (should (eq t (company--good-prefix-p "abcd")))
-      (should (eq t (company--good-prefix-p "abc")))
-      (should (eq t (company--good-prefix-p '("bar" . t)))))))
-
-(ert-deftest company-common-with-non-prefix-completion ()
-  (let ((company-backend #'ignore)
-        (company-prefix "abc")
-        company-candidates
-        company-candidates-length
-        company-candidates-cache
-        company-common)
-    (company-update-candidates '("abc" "def-abc"))
-    (should (null company-common))
-    (company-update-candidates '("abc" "abe-c"))
-    (should (null company-common))
-    (company-update-candidates '("abcd" "abcde" "abcdf"))
-    (should (equal "abcd" company-common))))
-
-(ert-deftest company-multi-backend-with-lambdas ()
-  (let ((company-backend
-         (list (lambda (command &optional _ &rest _r)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("a" "b"))))
-               (lambda (command &optional _ &rest _r)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("c" "d")))))))
-    (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" 
"d")))))
-
-(ert-deftest company-multi-backend-filters-backends-by-prefix ()
-  (let ((company-backend
-         (list (lambda (command &optional _ &rest _r)
-                 (cl-case command
-                   (prefix (cons "z" t))
-                   (candidates '("a" "b"))))
-               (lambda (command &optional _ &rest _r)
-                 (cl-case command
-                   (prefix "t")
-                   (candidates '("c" "d"))))
-               (lambda (command &optional _ &rest _r)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("e" "f")))))))
-    (should (equal (company-call-backend 'candidates "z") '("a" "b" "e" 
"f")))))
-
-(ert-deftest company-multi-backend-remembers-candidate-backend ()
-  (let ((company-backend
-         (list (lambda (command &optional _)
-                 (cl-case command
-                   (ignore-case nil)
-                   (annotation "1")
-                   (candidates '("a" "c"))
-                   (post-completion "13")))
-               (lambda (command &optional _)
-                 (cl-case command
-                   (ignore-case t)
-                   (annotation "2")
-                   (candidates '("b" "d"))
-                   (post-completion "42")))
-               (lambda (command &optional _)
-                 (cl-case command
-                   (annotation "3")
-                   (candidates '("e"))
-                   (post-completion "74"))))))
-    (let ((candidates (company-calculate-candidates nil)))
-      (should (equal candidates '("a" "b" "c" "d" "e")))
-      (should (equal t (company-call-backend 'ignore-case)))
-      (should (equal "1" (company-call-backend 'annotation (nth 0 
candidates))))
-      (should (equal "2" (company-call-backend 'annotation (nth 1 
candidates))))
-      (should (equal "13" (company-call-backend 'post-completion (nth 2 
candidates))))
-      (should (equal "42" (company-call-backend 'post-completion (nth 3 
candidates))))
-      (should (equal "3" (company-call-backend 'annotation (nth 4 
candidates))))
-      (should (equal "74" (company-call-backend 'post-completion (nth 4 
candidates)))))))
-
-(ert-deftest company-multi-backend-handles-keyword-with ()
-  (let ((primo (lambda (command &optional _)
-                 (cl-case command
-                   (prefix "a")
-                   (candidates '("abb" "abc" "abd")))))
-        (secundo (lambda (command &optional _)
-                   (cl-case command
-                     (prefix "a")
-                     (candidates '("acc" "acd"))))))
-    (let ((company-backend (list 'ignore 'ignore :with secundo)))
-      (should (null (company-call-backend 'prefix))))
-    (let ((company-backend (list 'ignore primo :with secundo)))
-      (should (equal "a" (company-call-backend 'prefix)))
-      (should (equal '("abb" "abc" "abd" "acc" "acd")
-                     (company-call-backend 'candidates "a"))))))
-
-(ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
-  (with-temp-buffer
-    (insert "a")
-    (company-mode)
-    (should-error
-     (company-begin-backend #'ignore))
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix "a")
-                     (candidates '("a" "ab" "ac")))))))
-      (let (this-command)
-        (company-call 'complete))
-      (should (eq 3 company-candidates-length)))))
-
-(ert-deftest company-require-match-explicit ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq 2 company-candidates-length))
-      (should (eq 3 (point))))))
-
-(ert-deftest company-dont-require-match-when-idle ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-minimum-prefix-length 2)
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (eq 2 company-candidates-length))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq nil company-candidates-length))
-      (should (eq 4 (point))))))
-
-(ert-deftest company-dont-require-match-if-old-prefix-ended-and-was-a-match ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (company-grab-word))
-                     (candidates '("abc" "ab" "abd"))
-                     (sorted t))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq 3 company-candidates-length))
-      (should (eq 3 (point)))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (null company-candidates-length))
-      (should (eq 4 (point))))))
-
-(ert-deftest company-should-complete-whitelist ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          company-begin-commands
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let ((company-continue-commands nil))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (null company-candidates-length)))
-      (let ((company-continue-commands '(backward-delete-char)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (eq 2 company-candidates-length))))))
-
-(ert-deftest company-should-complete-blacklist ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          company-begin-commands
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let ((company-continue-commands '(not backward-delete-char)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (null company-candidates-length)))
-      (let ((company-continue-commands '(not backward-delete-char-untabify)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (eq 2 company-candidates-length))))))
-
-(ert-deftest company-auto-complete-explicit ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-auto-complete 'company-explicit-action-p)
-          (company-auto-complete-chars '(? ))
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef")))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (string= "abcd " (buffer-string))))))
-
-(ert-deftest company-no-auto-complete-when-idle ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-auto-complete 'company-explicit-action-p)
-          (company-auto-complete-chars '(? ))
-          (company-minimum-prefix-length 2)
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef")))))))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (string= "ab " (buffer-string))))))
-
-(ert-deftest company-clears-explicit-action-when-no-matches ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-backends)
-      (company-call 'manual-begin) ;; fails
-      (should (null company-candidates))
-      (should (null (company-explicit-action-p))))))
-
-(ert-deftest company-ignore-case-replaces-prefix ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef"))
-                     (ignore-case t))))))
-      (insert "A")
-      (let (this-command)
-        (company-complete))
-      (should (string= "ab" (buffer-string)))
-      (delete-char -2)
-      (insert "A") ; hack, to keep it in one test
-      (company-complete-selection)
-      (should (string= "abcd" (buffer-string))))))
-
-(ert-deftest company-ignore-case-with-keep-prefix ()
-  (with-temp-buffer
-    (insert "AB")
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef"))
-                     (ignore-case 'keep-prefix))))))
-      (let (this-command)
-        (company-complete))
-      (company-complete-selection)
-      (should (string= "ABcd" (buffer-string))))))
-
-(ert-deftest company-non-prefix-completion ()
-  (with-temp-buffer
-    (insert "tc")
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional _)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("tea-cup" "teal-color")))))))
-      (let (this-command)
-        (company-complete))
-      (should (string= "tc" (buffer-string)))
-      (company-complete-selection)
-      (should (string= "tea-cup" (buffer-string))))))
-
-(ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (save-excursion (insert " ff"))
-      (company-mode)
-      (let ((company-frontends '(company-pseudo-tooltip-frontend))
-            (company-begin-commands '(self-insert-command))
-            (company-backends
-             (list (lambda (c &optional _)
-                     (cl-case c (prefix "") (candidates '("a" "b" "c")))))))
-        (let (this-command)
-          (company-call 'complete))
-        (company-call 'open-line 1)
-        (should (eq 1 (overlay-start company-pseudo-tooltip-overlay)))))))
-
-(ert-deftest company-pseudo-tooltip-show ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-    (set-window-buffer nil (current-buffer))
-    (insert "aaaa\n  bb\nccccccc\nddd")
-    (search-backward "bb")
-    (let ((col (company--column))
-          (company-candidates-length 2)
-          (company-candidates '("123" "45"))
-          (company-backend 'ignore))
-      (company-pseudo-tooltip-show (company--row) col 0)
-      (let ((ov company-pseudo-tooltip-overlay))
-        ;; With margins.
-        (should (eq (overlay-get ov 'company-width) 5))
-        ;; FIXME: Make it 2?
-        (should (eq (overlay-get ov 'company-height) company-tooltip-limit))
-        (should (eq (overlay-get ov 'company-column) col))
-        (should (string= (overlay-get ov 'company-display)
-                         "\n  123 \nc 45  c\nddd\n")))))))
-
-(ert-deftest company-pseudo-tooltip-edit-updates-width ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (set-window-buffer nil (current-buffer))
-    (let ((company-candidates-length 5)
-          (company-candidates '("123" "45" "67" "89" "1011"))
-          (company-backend 'ignore)
-          (company-tooltip-limit 4)
-          (company-tooltip-offset-display 'scrollbar))
-      (company-pseudo-tooltip-show (company--row)
-                                   (company--column)
-                                   0)
-      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
-                  6))
-      (company-pseudo-tooltip-edit 4)
-      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
-                  7)))))
-
-(ert-deftest company-preview-show-with-annotations ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 1)
-            (company-candidates '("123")))
-        (company-preview-show-at-point (point))
-        (let* ((ov company-preview-overlay)
-               (str (overlay-get ov 'after-string)))
-          (should (string= str "123"))
-          (should (eq (get-text-property 0 'cursor str) 1)))))))
-
-(ert-deftest company-pseudo-tooltip-show-with-annotations ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert " ")
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 2)
-            (company-backend (lambda (action &optional arg &rest _ignore)
-                               (when (eq action 'annotation)
-                                 (cdr (assoc arg '(("123" . "(4)")))))))
-            (company-candidates '("123" "45"))
-            company-tooltip-align-annotations)
-        (company-pseudo-tooltip-show-at-point (point) 0)
-        (let ((ov company-pseudo-tooltip-overlay))
-          ;; With margins.
-          (should (eq (overlay-get ov 'company-width) 8))
-          (should (string= (overlay-get ov 'company-display)
-                           "\n 123(4) \n 45     \n")))))))
-
-(ert-deftest company-pseudo-tooltip-show-with-annotations-right-aligned ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert " ")
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 3)
-            (company-backend (lambda (action &optional arg &rest _ignore)
-                               (when (eq action 'annotation)
-                                 (cdr (assoc arg '(("123" . "(4)")
-                                                   ("67" . "(891011)")))))))
-            (company-candidates '("123" "45" "67"))
-            (company-tooltip-align-annotations t))
-        (company-pseudo-tooltip-show-at-point (point) 0)
-        (let ((ov company-pseudo-tooltip-overlay))
-          ;; With margins.
-          (should (eq (overlay-get ov 'company-width) 13))
-          (should (string= (overlay-get ov 'company-display)
-                           "\n 123     (4) \n 45          \n 67 (891011) 
\n")))))))
-
-(ert-deftest company-create-lines-shows-numbers ()
-  (let ((company-show-numbers t)
-        (company-candidates '("x" "y" "z"))
-        (company-candidates-length 3)
-        (company-backend 'ignore))
-    (should (equal '(" x 1 " " y 2 " " z 3 ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-create-lines-truncates-annotations ()
-  (let* ((ww (company--window-width))
-         (data `(("1" . "(123)")
-                 ("2" . nil)
-                 ("3" . ,(concat "(" (make-string (- ww 2) ?4) ")"))
-                 (,(make-string ww ?4) . "<4>")))
-         (company-candidates (mapcar #'car data))
-         (company-candidates-length 4)
-         (company-tooltip-margin 1)
-         (company-backend (lambda (cmd &optional arg)
-                            (when (eq cmd 'annotation)
-                              (cdr (assoc arg data)))))
-         company-tooltip-align-annotations)
-    (should (equal (list (format " 1(123)%s " (company-space-string (- ww 8)))
-                         (format " 2%s " (company-space-string (- ww 3)))
-                         (format " 3(444%s " (make-string (- ww 7) ?4))
-                         (format " %s " (make-string (- ww 2) ?4)))
-                   (company--create-lines 0 999)))
-    (let ((company-tooltip-align-annotations t))
-      (should (equal (list (format " 1%s(123) " (company-space-string (- ww 
8)))
-                           (format " 2%s " (company-space-string (- ww 3)))
-                           (format " 3 (444%s " (make-string (- ww 8) ?4))
-                           (format " %s " (make-string (- ww 2) ?4)))
-                     (company--create-lines 0 999))))))
-
-(ert-deftest company-create-lines-truncates-common-part ()
-  (let* ((ww (company--window-width))
-         (company-candidates-length 2)
-         (company-tooltip-margin 1)
-         (company-backend #'ignore))
-    (let* ((company-common (make-string (- ww 3) ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3"))))
-      (should (equal (list (format " %s2 " (make-string (- ww 3) ?1))
-                           (format " %s3 " (make-string (- ww 3) ?1)))
-                     (company--create-lines 0 999))))
-    (let* ((company-common (make-string (- ww 2) ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3"))))
-      (should (equal (list (format " %s " company-common)
-                           (format " %s " company-common))
-                     (company--create-lines 0 999))))
-    (let* ((company-common (make-string ww ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3")))
-           (res (company--create-lines 0 999)))
-      (should (equal (list (format " %s " (make-string (- ww 2) ?1))
-                           (format " %s " (make-string (- ww 2) ?1)))
-                     res))
-      (should (eq 'company-tooltip-common-selection
-                    (get-text-property (- ww 2) 'face
-                                       (car res))))
-      (should (eq 'company-tooltip-selection
-                  (get-text-property (1- ww) 'face
-                                     (car res))))
-      )))
-
-(ert-deftest company-create-lines-clears-out-non-printables ()
-  :tags '(interactive)
-  (let (company-show-numbers
-        (company-candidates (list
-                             (decode-coding-string "avalis\351e" 'utf-8)
-                             "avatar"))
-        (company-candidates-length 2)
-        (company-backend 'ignore))
-    (should (equal '(" avalis‗e "
-                     " avatar   ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-create-lines-handles-multiple-width ()
-  :tags '(interactive)
-  (let (company-show-numbers
-        (company-candidates '("蛙蛙蛙蛙" "蛙abc"))
-        (company-candidates-length 2)
-        (company-backend 'ignore))
-    (should (equal '(" 蛙蛙蛙蛙 "
-                     " 蛙abc    ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-create-lines-handles-multiple-width-in-annotation ()
-  (let* (company-show-numbers
-         (alist '(("a" . " ︸") ("b" . " ︸︸")))
-         (company-candidates (mapcar #'car alist))
-         (company-candidates-length 2)
-         (company-backend (lambda (c &optional a)
-                            (when (eq c 'annotation)
-                              (assoc-default a alist)))))
-    (should (equal '(" a ︸   "
-                     " b ︸︸ ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-column-with-composition ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "lambda ()")
-      (compose-region 1 (1+ (length "lambda")) "\\")
-      (should (= (company--column) 4)))))
-
-(ert-deftest company-column-with-line-prefix ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo")
-      (put-text-property (point-min) (point) 'line-prefix "  ")
-      (should (= (company--column) 5)))))
-
-(ert-deftest company-column-with-line-prefix-on-empty-line ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "\n")
-      (forward-char -1)
-      (put-text-property (point-min) (point-max) 'line-prefix "  ")
-      (should (= (company--column) 2)))))
-
-(ert-deftest company-column-with-tabs ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "|\t|\t|\t(")
-      (let ((tab-width 8))
-        (should (= (company--column) 25))))))
-
-(ert-deftest company-row-with-header-line-format ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (should (= (company--row) 0))
-      (setq header-line-format "aaaaaaa")
-      (should (= (company--row) 0)))))
-
-(ert-deftest company-plainify ()
-  (let ((tab-width 8))
-    (should (equal-including-properties
-             (company-plainify "\tabc\td\t")
-             (concat "        "
-                     "abc     "
-                     "d       "))))
-  (should (equal-including-properties
-           (company-plainify (propertize "foobar" 'line-prefix "-*-"))
-           "-*-foobar")))
-
-(ert-deftest company-buffer-lines-with-lines-folded ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (insert (propertize "aaa\nbbb\nccc\nddd\n" 'display "aaa+\n"))
-    (insert "eee\nfff\nggg")
-    (should (equal (company-buffer-lines (point-min) (point-max))
-                   '("aaa" "eee" "fff" "ggg")))))
-
-(ert-deftest company-buffer-lines-with-multiline-display ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (insert (propertize "a" 'display "bbb\nccc\ndddd\n"))
-    (insert "eee\nfff\nggg")
-    (should (equal (company-buffer-lines (point-min) (point-max))
-                   '("" "" "" "eee" "fff" "ggg")))))
-
-(ert-deftest company-modify-line ()
-  (let ((str "-*-foobar"))
-    (should (equal-including-properties
-             (company-modify-line str "zz" 4)
-             "-*-fzzbar"))
-    (should (equal-including-properties
-             (company-modify-line str "xx" 0)
-             "xx-foobar"))
-    (should (equal-including-properties
-             (company-modify-line str "zz" 10)
-             "-*-foobar zz"))))
-
-(ert-deftest company-scrollbar-bounds ()
-  (should (equal nil (company--scrollbar-bounds 0 3 3)))
-  (should (equal nil (company--scrollbar-bounds 0 4 3)))
-  (should (equal '(0 . 0) (company--scrollbar-bounds 0 1 2)))
-  (should (equal '(1 . 1) (company--scrollbar-bounds 2 2 4)))
-  (should (equal '(2 . 3) (company--scrollbar-bounds 7 4 12)))
-  (should (equal '(1 . 2) (company--scrollbar-bounds 3 4 12)))
-  (should (equal '(1 . 3) (company--scrollbar-bounds 4 5 11))))
-
-;;; Async
-
-(defun company-async-backend (command &optional _)
-  (pcase command
-    (`prefix "foo")
-    (`candidates
-     (cons :async
-           (lambda (cb)
-             (run-with-timer 0.05 nil
-                             #'funcall cb '("abc" "abd")))))))
-
-(ert-deftest company-call-backend-forces-sync ()
-  (let ((company-backend 'company-async-backend)
-        (company-async-timeout 0.1))
-    (should (equal '("abc" "abd") (company-call-backend 'candidates)))))
-
-(ert-deftest company-call-backend-errors-on-timeout ()
-  (with-temp-buffer
-    (let* ((company-backend (lambda (command &optional _arg)
-                              (pcase command
-                                (`candidates (cons :async 'ignore)))))
-           (company-async-timeout 0.1)
-           (err (should-error (company-call-backend 'candidates "foo"))))
-      (should (string-match-p "async timeout" (cadr err))))))
-
-(ert-deftest company-call-backend-raw-passes-return-value-verbatim ()
-  (let ((company-backend 'company-async-backend))
-    (should (equal "foo" (company-call-backend-raw 'prefix)))
-    (should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
-    (should (equal 'closure (cadr (company-call-backend-raw 'candidates 
"foo"))))))
-
-(ert-deftest company-manual-begin-forces-async-candidates-to-sync ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-transformers
-          (company-backends (list 'company-async-backend)))
-      (company-manual-begin)
-      (should (equal "foo" company-prefix))
-      (should (equal '("abc" "abd") company-candidates)))))
-
-(ert-deftest company-idle-begin-allows-async-candidates ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-transformers
-          (company-backends (list 'company-async-backend)))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (null company-candidates))
-      (sleep-for 0.1)
-      (should (equal "foo" company-prefix))
-      (should (equal '("abc" "abd") company-candidates)))))
-
-(ert-deftest company-idle-begin-cancels-async-candidates-if-buffer-changed ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          (company-backends (list 'company-async-backend)))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (null company-candidates))
-      (insert "a")
-      (sleep-for 0.1)
-      (should (null company-candidates)))))
-
-(ert-deftest company-idle-begin-async-allows-immediate-callbacks ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (pcase command
-                     (`prefix (buffer-substring (point-min) (point)))
-                     (`candidates
-                      (let ((c (all-completions arg '("abc" "def"))))
-                        (cons :async
-                              (lambda (cb) (funcall cb c)))))
-                     (`no-cache t)))))
-          (company-minimum-prefix-length 0))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (equal '("abc" "def") company-candidates))
-      (let ((last-command-event ?a))
-        (company-call 'self-insert-command 1))
-      (should (equal '("abc") company-candidates)))))
-
-(ert-deftest company-multi-backend-forces-prefix-to-sync ()
-  (with-temp-buffer
-    (let ((company-backend (list 'ignore
-                                 (lambda (command)
-                                   (should (eq command 'prefix))
-                                   (cons :async
-                                         (lambda (cb)
-                                           (run-with-timer
-                                            0.01 nil
-                                            (lambda () (funcall cb nil))))))
-                                 (lambda (command)
-                                   (should (eq command 'prefix))
-                                   "foo"))))
-      (should (equal "foo" (company-call-backend-raw 'prefix))))
-    (let ((company-backend (list (lambda (_command)
-                                   (cons :async
-                                         (lambda (cb)
-                                           (run-with-timer
-                                            0.01 nil
-                                            (lambda () (funcall cb "bar"))))))
-                                 (lambda (_command)
-                                   "foo"))))
-      (should (equal "bar" (company-call-backend-raw 'prefix))))))
-
-(ert-deftest company-multi-backend-merges-deferred-candidates ()
-  (with-temp-buffer
-    (let* ((immediate (lambda (command &optional _)
-                        (pcase command
-                          (`prefix "foo")
-                          (`candidates
-                           (cons :async
-                                 (lambda (cb) (funcall cb '("f"))))))))
-           (company-backend (list 'ignore
-                                  (lambda (command &optional arg)
-                                    (pcase command
-                                      (`prefix "foo")
-                                      (`candidates
-                                       (should (equal arg "foo"))
-                                       (cons :async
-                                             (lambda (cb)
-                                               (run-with-timer
-                                                0.01 nil
-                                                (lambda () (funcall cb '("a" 
"b")))))))))
-                                  (lambda (command &optional _)
-                                    (pcase command
-                                      (`prefix "foo")
-                                      (`candidates '("c" "d" "e"))))
-                                  immediate)))
-      (should (equal :async (car (company-call-backend-raw 'candidates 
"foo"))))
-      (should (equal '("a" "b" "c" "d" "e" "f")
-                     (company-call-backend 'candidates "foo")))
-      (let ((company-backend (list immediate)))
-        (should (equal '("f") (company-call-backend 'candidates "foo")))))))
-
-;;; Transformers
-
-(ert-deftest company-occurrence-prefer-closest-above ()
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo0
-foo1
-")
-      (save-excursion
-        (insert "
-foo3
-foo2"))
-      (let ((company-backend 'company-dabbrev)
-            (company-occurrence-weight-function
-             'company-occurrence-prefer-closest-above))
-        (should (equal '("foo1" "foo0" "foo3" "foo2" "foo4")
-                       (company-sort-by-occurrence
-                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
-
-(ert-deftest company-occurrence-prefer-any-closest ()
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo0
-foo1
-")
-      (save-excursion
-        (insert "
-foo3
-foo2"))
-      (let ((company-backend 'company-dabbrev)
-            (company-occurrence-weight-function
-             'company-occurrence-prefer-any-closest))
-        (should (equal '("foo1" "foo3" "foo0" "foo2" "foo4")
-                       (company-sort-by-occurrence
-                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
-
-;;; Template
-
-(ert-deftest company-template-removed-after-the-last-jump ()
-  (with-temp-buffer
-    (insert "{ }")
-    (goto-char 2)
-    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
-      (save-excursion
-        (dotimes (_ 2)
-          (insert " ")
-          (company-template-add-field tpl (point) "foo")))
-      (company-call 'template-forward-field)
-      (should (= 3 (point)))
-      (company-call 'template-forward-field)
-      (should (= 7 (point)))
-      (company-call 'template-forward-field)
-      (should (= 11 (point)))
-      (should (zerop (length (overlay-get tpl 'company-template-fields))))
-      (should (null (overlay-buffer tpl))))))
-
-(ert-deftest company-template-removed-after-input-and-jump ()
-  (with-temp-buffer
-    (insert "{ }")
-    (goto-char 2)
-    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
-      (save-excursion
-        (insert " ")
-        (company-template-add-field tpl (point) "bar"))
-      (company-call 'template-move-to-first tpl)
-      (should (= 3 (point)))
-      (dolist (c (string-to-list "tee"))
-        (let ((last-command-event c))
-          (company-call 'self-insert-command 1)))
-      (should (string= "{ tee }" (buffer-string)))
-      (should (overlay-buffer tpl))
-      (company-call 'template-forward-field)
-      (should (= 7 (point)))
-      (should (null (overlay-buffer tpl))))))
-
 (defun company-call (name &rest args)
   (let* ((maybe (intern (format "company-%s" name)))
          (command (if (fboundp maybe) maybe name)))
@@ -926,44 +33,4 @@ foo2"))
     (let ((this-command command))
       (run-hooks 'post-command-hook))))
 
-(ert-deftest company-template-c-like-templatify ()
-  (with-temp-buffer
-    (let ((text "foo(int a, short b)"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo(arg0, arg1)" (buffer-string)))
-      (should (looking-at "arg0"))
-      (should (equal "int a"
-                     (overlay-get (company-template-field-at) 'display))))))
-
-(ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
-  (with-temp-buffer
-    (let ((text "foo(int a, short b)!@ #1334 a"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo(arg0, arg1)" (buffer-string)))
-      (should (looking-at "arg0")))))
-
-(ert-deftest company-template-c-like-templatify-generics ()
-  (with-temp-buffer
-    (let ((text "foo<TKey, TValue>(int i, Dict<TKey, TValue>, long l)"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo<arg0, arg1>(arg2, arg3, arg4)" (buffer-string)))
-      (should (looking-at "arg0"))
-      (should (equal "TKey" (overlay-get (company-template-field-at) 
'display)))
-      (search-forward "arg3")
-      (forward-char -1)
-      (should (equal "Dict<TKey, TValue>"
-                     (overlay-get (company-template-field-at) 'display))))))
-
-;;; Clang
-
-(ert-deftest company-clang-objc-templatify ()
-  (with-temp-buffer
-    (let ((text "createBookWithTitle:andAuthor:"))
-      (insert text)
-      (company-clang-objc-templatify text)
-      (should (equal "createBookWithTitle:arg0 andAuthor:arg1" 
(buffer-string)))
-      (should (looking-at "arg0"))
-      (should (null (overlay-get (company-template-field-at) 'display))))))
+(provide 'company-tests)
diff --git a/test/all.el b/test/all.el
new file mode 100644
index 0000000..6d64a62
--- /dev/null
+++ b/test/all.el
@@ -0,0 +1,28 @@
+;;; all-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(defvar company-test-path
+  (file-name-directory (or load-file-name buffer-file-name)))
+
+(require 'ert)
+
+(dolist (test-file (directory-files company-test-path t "-tests.el$"))
+  (load test-file nil t))
diff --git a/test/async-tests.el b/test/async-tests.el
new file mode 100644
index 0000000..5d8be3e
--- /dev/null
+++ b/test/async-tests.el
@@ -0,0 +1,161 @@
+;;; async-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(defun company-async-backend (command &optional _)
+  (pcase command
+    (`prefix "foo")
+    (`candidates
+     (cons :async
+           (lambda (cb)
+             (run-with-timer 0.05 nil
+                             #'funcall cb '("abc" "abd")))))))
+
+(ert-deftest company-call-backend-forces-sync ()
+  (let ((company-backend 'company-async-backend)
+        (company-async-timeout 0.1))
+    (should (equal '("abc" "abd") (company-call-backend 'candidates)))))
+
+(ert-deftest company-call-backend-errors-on-timeout ()
+  (with-temp-buffer
+    (let* ((company-backend (lambda (command &optional _arg)
+                              (pcase command
+                                (`candidates (cons :async 'ignore)))))
+           (company-async-timeout 0.1)
+           (err (should-error (company-call-backend 'candidates "foo"))))
+      (should (string-match-p "async timeout" (cadr err))))))
+
+(ert-deftest company-call-backend-raw-passes-return-value-verbatim ()
+  (let ((company-backend 'company-async-backend))
+    (should (equal "foo" (company-call-backend-raw 'prefix)))
+    (should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
+    (should (equal 'closure (cadr (company-call-backend-raw 'candidates 
"foo"))))))
+
+(ert-deftest company-manual-begin-forces-async-candidates-to-sync ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-transformers
+          (company-backends (list 'company-async-backend)))
+      (company-manual-begin)
+      (should (equal "foo" company-prefix))
+      (should (equal '("abc" "abd") company-candidates)))))
+
+(ert-deftest company-idle-begin-allows-async-candidates ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-transformers
+          (company-backends (list 'company-async-backend)))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (null company-candidates))
+      (sleep-for 0.1)
+      (should (equal "foo" company-prefix))
+      (should (equal '("abc" "abd") company-candidates)))))
+
+(ert-deftest company-idle-begin-cancels-async-candidates-if-buffer-changed ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends (list 'company-async-backend)))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (null company-candidates))
+      (insert "a")
+      (sleep-for 0.1)
+      (should (null company-candidates)))))
+
+(ert-deftest company-idle-begin-async-allows-immediate-callbacks ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional arg)
+                   (pcase command
+                     (`prefix (buffer-substring (point-min) (point)))
+                     (`candidates
+                      (let ((c (all-completions arg '("abc" "def"))))
+                        (cons :async
+                              (lambda (cb) (funcall cb c)))))
+                     (`no-cache t)))))
+          (company-minimum-prefix-length 0))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (equal '("abc" "def") company-candidates))
+      (let ((last-command-event ?a))
+        (company-call 'self-insert-command 1))
+      (should (equal '("abc") company-candidates)))))
+
+(ert-deftest company-multi-backend-forces-prefix-to-sync ()
+  (with-temp-buffer
+    (let ((company-backend (list 'ignore
+                                 (lambda (command)
+                                   (should (eq command 'prefix))
+                                   (cons :async
+                                         (lambda (cb)
+                                           (run-with-timer
+                                            0.01 nil
+                                            (lambda () (funcall cb nil))))))
+                                 (lambda (command)
+                                   (should (eq command 'prefix))
+                                   "foo"))))
+      (should (equal "foo" (company-call-backend-raw 'prefix))))
+    (let ((company-backend (list (lambda (_command)
+                                   (cons :async
+                                         (lambda (cb)
+                                           (run-with-timer
+                                            0.01 nil
+                                            (lambda () (funcall cb "bar"))))))
+                                 (lambda (_command)
+                                   "foo"))))
+      (should (equal "bar" (company-call-backend-raw 'prefix))))))
+
+(ert-deftest company-multi-backend-merges-deferred-candidates ()
+  (with-temp-buffer
+    (let* ((immediate (lambda (command &optional _)
+                        (pcase command
+                          (`prefix "foo")
+                          (`candidates
+                           (cons :async
+                                 (lambda (cb) (funcall cb '("f"))))))))
+           (company-backend (list 'ignore
+                                  (lambda (command &optional arg)
+                                    (pcase command
+                                      (`prefix "foo")
+                                      (`candidates
+                                       (should (equal arg "foo"))
+                                       (cons :async
+                                             (lambda (cb)
+                                               (run-with-timer
+                                                0.01 nil
+                                                (lambda () (funcall cb '("a" 
"b")))))))))
+                                  (lambda (command &optional _)
+                                    (pcase command
+                                      (`prefix "foo")
+                                      (`candidates '("c" "d" "e"))))
+                                  immediate)))
+      (should (equal :async (car (company-call-backend-raw 'candidates 
"foo"))))
+      (should (equal '("a" "b" "c" "d" "e" "f")
+                     (company-call-backend 'candidates "foo")))
+      (let ((company-backend (list immediate)))
+        (should (equal '("f") (company-call-backend 'candidates "foo")))))))
diff --git a/test/clang-tests.el b/test/clang-tests.el
new file mode 100644
index 0000000..4d23a29
--- /dev/null
+++ b/test/clang-tests.el
@@ -0,0 +1,11 @@
+(require 'company-tests)
+(require 'company-clang)
+
+(ert-deftest company-clang-objc-templatify ()
+  (with-temp-buffer
+    (let ((text "createBookWithTitle:andAuthor:"))
+      (insert text)
+      (company-clang-objc-templatify text)
+      (should (equal "createBookWithTitle:arg0 andAuthor:arg1" 
(buffer-string)))
+      (should (looking-at "arg0"))
+      (should (null (overlay-get (company-template-field-at) 'display))))))
diff --git a/test/core-tests.el b/test/core-tests.el
new file mode 100644
index 0000000..0ff691e
--- /dev/null
+++ b/test/core-tests.el
@@ -0,0 +1,420 @@
+;;; core-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-good-prefix ()
+  (let ((company-minimum-prefix-length 5)
+        company-abort-manual-when-too-short
+        company--manual-action            ;idle begin
+        (company-selection-changed t))    ;has no effect
+    (should (eq t (company--good-prefix-p "address@hidden")))
+    (should (eq nil (company--good-prefix-p "abcd")))
+    (should (eq nil (company--good-prefix-p 'stop)))
+    (should (eq t (company--good-prefix-p '("foo" . 5))))
+    (should (eq nil (company--good-prefix-p '("foo" . 4))))
+    (should (eq t (company--good-prefix-p '("foo" . t))))))
+
+(ert-deftest company--manual-prefix-set-and-unset ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-manual-begin)
+      (should (equal "ab" company--manual-prefix))
+      (company-abort)
+      (should (null company--manual-prefix)))))
+
+(ert-deftest company-abort-manual-when-too-short ()
+  (let ((company-minimum-prefix-length 5)
+        (company-abort-manual-when-too-short t)
+        (company-selection-changed t))    ;has not effect
+    (let ((company--manual-action nil))   ;idle begin
+      (should (eq t (company--good-prefix-p "address@hidden")))
+      (should (eq t (company--good-prefix-p '("foo" . 5))))
+      (should (eq t (company--good-prefix-p '("foo" . t)))))
+    (let ((company--manual-action t)
+          (company--manual-prefix "abc")) ;manual begin from this prefix
+      (should (eq t (company--good-prefix-p "address@hidden")))
+      (should (eq nil (company--good-prefix-p "ab")))
+      (should (eq nil (company--good-prefix-p 'stop)))
+      (should (eq t (company--good-prefix-p '("foo" . 4))))
+      (should (eq t (company--good-prefix-p "abcd")))
+      (should (eq t (company--good-prefix-p "abc")))
+      (should (eq t (company--good-prefix-p '("bar" . t)))))))
+
+(ert-deftest company-common-with-non-prefix-completion ()
+  (let ((company-backend #'ignore)
+        (company-prefix "abc")
+        company-candidates
+        company-candidates-length
+        company-candidates-cache
+        company-common)
+    (company-update-candidates '("abc" "def-abc"))
+    (should (null company-common))
+    (company-update-candidates '("abc" "abe-c"))
+    (should (null company-common))
+    (company-update-candidates '("abcd" "abcde" "abcdf"))
+    (should (equal "abcd" company-common))))
+
+(ert-deftest company-multi-backend-with-lambdas ()
+  (let ((company-backend
+         (list (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("a" "b"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("c" "d")))))))
+    (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" 
"d")))))
+
+(ert-deftest company-multi-backend-filters-backends-by-prefix ()
+  (let ((company-backend
+         (list (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix (cons "z" t))
+                   (candidates '("a" "b"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "t")
+                   (candidates '("c" "d"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("e" "f")))))))
+    (should (equal (company-call-backend 'candidates "z") '("a" "b" "e" 
"f")))))
+
+(ert-deftest company-multi-backend-remembers-candidate-backend ()
+  (let ((company-backend
+         (list (lambda (command &optional _)
+                 (cl-case command
+                   (ignore-case nil)
+                   (annotation "1")
+                   (candidates '("a" "c"))
+                   (post-completion "13")))
+               (lambda (command &optional _)
+                 (cl-case command
+                   (ignore-case t)
+                   (annotation "2")
+                   (candidates '("b" "d"))
+                   (post-completion "42")))
+               (lambda (command &optional _)
+                 (cl-case command
+                   (annotation "3")
+                   (candidates '("e"))
+                   (post-completion "74"))))))
+    (let ((candidates (company-calculate-candidates nil)))
+      (should (equal candidates '("a" "b" "c" "d" "e")))
+      (should (equal t (company-call-backend 'ignore-case)))
+      (should (equal "1" (company-call-backend 'annotation (nth 0 
candidates))))
+      (should (equal "2" (company-call-backend 'annotation (nth 1 
candidates))))
+      (should (equal "13" (company-call-backend 'post-completion (nth 2 
candidates))))
+      (should (equal "42" (company-call-backend 'post-completion (nth 3 
candidates))))
+      (should (equal "3" (company-call-backend 'annotation (nth 4 
candidates))))
+      (should (equal "74" (company-call-backend 'post-completion (nth 4 
candidates)))))))
+
+(ert-deftest company-multi-backend-handles-keyword-with ()
+  (let ((primo (lambda (command &optional _)
+                 (cl-case command
+                   (prefix "a")
+                   (candidates '("abb" "abc" "abd")))))
+        (secundo (lambda (command &optional _)
+                   (cl-case command
+                     (prefix "a")
+                     (candidates '("acc" "acd"))))))
+    (let ((company-backend (list 'ignore 'ignore :with secundo)))
+      (should (null (company-call-backend 'prefix))))
+    (let ((company-backend (list 'ignore primo :with secundo)))
+      (should (equal "a" (company-call-backend 'prefix)))
+      (should (equal '("abb" "abc" "abd" "acc" "acd")
+                     (company-call-backend 'candidates "a"))))))
+
+(ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
+  (with-temp-buffer
+    (insert "a")
+    (company-mode)
+    (should-error
+     (company-begin-backend #'ignore))
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix "a")
+                     (candidates '("a" "ab" "ac")))))))
+      (let (this-command)
+        (company-call 'complete))
+      (should (eq 3 company-candidates-length)))))
+
+(ert-deftest company-require-match-explicit ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq 2 company-candidates-length))
+      (should (eq 3 (point))))))
+
+(ert-deftest company-dont-require-match-when-idle ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-minimum-prefix-length 2)
+          (company-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (eq 2 company-candidates-length))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq nil company-candidates-length))
+      (should (eq 4 (point))))))
+
+(ert-deftest company-dont-require-match-if-old-prefix-ended-and-was-a-match ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (company-grab-word))
+                     (candidates '("abc" "ab" "abd"))
+                     (sorted t))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq 3 company-candidates-length))
+      (should (eq 3 (point)))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (null company-candidates-length))
+      (should (eq 4 (point))))))
+
+(ert-deftest company-should-complete-whitelist ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          company-begin-commands
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let ((company-continue-commands nil))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (null company-candidates-length)))
+      (let ((company-continue-commands '(backward-delete-char)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (eq 2 company-candidates-length))))))
+
+(ert-deftest company-should-complete-blacklist ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          company-begin-commands
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let ((company-continue-commands '(not backward-delete-char)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (null company-candidates-length)))
+      (let ((company-continue-commands '(not backward-delete-char-untabify)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (eq 2 company-candidates-length))))))
+
+(ert-deftest company-auto-complete-explicit ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-auto-complete 'company-explicit-action-p)
+          (company-auto-complete-chars '(? ))
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef")))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (string= "abcd " (buffer-string))))))
+
+(ert-deftest company-no-auto-complete-when-idle ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-auto-complete 'company-explicit-action-p)
+          (company-auto-complete-chars '(? ))
+          (company-minimum-prefix-length 2)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef")))))))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (string= "ab " (buffer-string))))))
+
+(ert-deftest company-clears-explicit-action-when-no-matches ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-backends)
+      (company-call 'manual-begin) ;; fails
+      (should (null company-candidates))
+      (should (null (company-explicit-action-p))))))
+
+(ert-deftest company-ignore-case-replaces-prefix ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef"))
+                     (ignore-case t))))))
+      (insert "A")
+      (let (this-command)
+        (company-complete))
+      (should (string= "ab" (buffer-string)))
+      (delete-char -2)
+      (insert "A") ; hack, to keep it in one test
+      (company-complete-selection)
+      (should (string= "abcd" (buffer-string))))))
+
+(ert-deftest company-ignore-case-with-keep-prefix ()
+  (with-temp-buffer
+    (insert "AB")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef"))
+                     (ignore-case 'keep-prefix))))))
+      (let (this-command)
+        (company-complete))
+      (company-complete-selection)
+      (should (string= "ABcd" (buffer-string))))))
+
+(ert-deftest company-non-prefix-completion ()
+  (with-temp-buffer
+    (insert "tc")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("tea-cup" "teal-color")))))))
+      (let (this-command)
+        (company-complete))
+      (should (string= "tc" (buffer-string)))
+      (company-complete-selection)
+      (should (string= "tea-cup" (buffer-string))))))
+
+;;; Row and column
+
+(ert-deftest company-column-with-composition ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "lambda ()")
+      (compose-region 1 (1+ (length "lambda")) "\\")
+      (should (= (company--column) 4)))))
+
+(ert-deftest company-column-with-line-prefix ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo")
+      (put-text-property (point-min) (point) 'line-prefix "  ")
+      (should (= (company--column) 5)))))
+
+(ert-deftest company-column-with-line-prefix-on-empty-line ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "\n")
+      (forward-char -1)
+      (put-text-property (point-min) (point-max) 'line-prefix "  ")
+      (should (= (company--column) 2)))))
+
+(ert-deftest company-column-with-tabs ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "|\t|\t|\t(")
+      (let ((tab-width 8))
+        (should (= (company--column) 25))))))
+
+(ert-deftest company-row-with-header-line-format ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (should (= (company--row) 0))
+      (setq header-line-format "aaaaaaa")
+      (should (= (company--row) 0)))))
diff --git a/company-elisp-tests.el b/test/elisp-tests.el
similarity index 97%
rename from company-elisp-tests.el
rename to test/elisp-tests.el
index 9b7cba3..7fd02de 100644
--- a/company-elisp-tests.el
+++ b/test/elisp-tests.el
@@ -1,6 +1,6 @@
-;;; company-elisp-tests.el --- company-elisp tests
+;;; elisp-tests.el --- company-elisp tests
 
-;; Copyright (C) 2013-2014  Free Software Foundation, Inc.
+;; Copyright (C) 2013-2015  Free Software Foundation, Inc.
 
 ;; Author: Dmitry Gutov
 
@@ -19,12 +19,9 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
-
-;;; Commentary:
-;;
-
 ;;; Code:
 
+(require 'company-tests)
 (require 'company-elisp)
 
 (defmacro company-elisp-with-buffer (contents &rest body)
diff --git a/test/frontends-tests.el b/test/frontends-tests.el
new file mode 100644
index 0000000..1d12b3c
--- /dev/null
+++ b/test/frontends-tests.el
@@ -0,0 +1,289 @@
+;;; frontends-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (save-excursion (insert " ff"))
+      (company-mode)
+      (let ((company-frontends '(company-pseudo-tooltip-frontend))
+            (company-begin-commands '(self-insert-command))
+            (company-backends
+             (list (lambda (c &optional _)
+                     (cl-case c (prefix "") (candidates '("a" "b" "c")))))))
+        (let (this-command)
+          (company-call 'complete))
+        (company-call 'open-line 1)
+        (should (eq 1 (overlay-start company-pseudo-tooltip-overlay)))))))
+
+(ert-deftest company-pseudo-tooltip-show ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+    (set-window-buffer nil (current-buffer))
+    (insert "aaaa\n  bb\nccccccc\nddd")
+    (search-backward "bb")
+    (let ((col (company--column))
+          (company-candidates-length 2)
+          (company-candidates '("123" "45"))
+          (company-backend 'ignore))
+      (company-pseudo-tooltip-show (company--row) col 0)
+      (let ((ov company-pseudo-tooltip-overlay))
+        ;; With margins.
+        (should (eq (overlay-get ov 'company-width) 5))
+        ;; FIXME: Make it 2?
+        (should (eq (overlay-get ov 'company-height) company-tooltip-limit))
+        (should (eq (overlay-get ov 'company-column) col))
+        (should (string= (overlay-get ov 'company-display)
+                         "\n  123 \nc 45  c\nddd\n")))))))
+
+(ert-deftest company-pseudo-tooltip-edit-updates-width ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (set-window-buffer nil (current-buffer))
+    (let ((company-candidates-length 5)
+          (company-candidates '("123" "45" "67" "89" "1011"))
+          (company-backend 'ignore)
+          (company-tooltip-limit 4)
+          (company-tooltip-offset-display 'scrollbar))
+      (company-pseudo-tooltip-show (company--row)
+                                   (company--column)
+                                   0)
+      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
+                  6))
+      (company-pseudo-tooltip-edit 4)
+      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
+                  7)))))
+
+(ert-deftest company-preview-show-with-annotations ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 1)
+            (company-candidates '("123")))
+        (company-preview-show-at-point (point))
+        (let* ((ov company-preview-overlay)
+               (str (overlay-get ov 'after-string)))
+          (should (string= str "123"))
+          (should (eq (get-text-property 0 'cursor str) 1)))))))
+
+(ert-deftest company-pseudo-tooltip-show-with-annotations ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert " ")
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 2)
+            (company-backend (lambda (action &optional arg &rest _ignore)
+                               (when (eq action 'annotation)
+                                 (cdr (assoc arg '(("123" . "(4)")))))))
+            (company-candidates '("123" "45"))
+            company-tooltip-align-annotations)
+        (company-pseudo-tooltip-show-at-point (point) 0)
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 8))
+          (should (string= (overlay-get ov 'company-display)
+                           "\n 123(4) \n 45     \n")))))))
+
+(ert-deftest company-pseudo-tooltip-show-with-annotations-right-aligned ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert " ")
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 3)
+            (company-backend (lambda (action &optional arg &rest _ignore)
+                               (when (eq action 'annotation)
+                                 (cdr (assoc arg '(("123" . "(4)")
+                                                   ("67" . "(891011)")))))))
+            (company-candidates '("123" "45" "67"))
+            (company-tooltip-align-annotations t))
+        (company-pseudo-tooltip-show-at-point (point) 0)
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 13))
+          (should (string= (overlay-get ov 'company-display)
+                           "\n 123     (4) \n 45          \n 67 (891011) 
\n")))))))
+
+(ert-deftest company-create-lines-shows-numbers ()
+  (let ((company-show-numbers t)
+        (company-candidates '("x" "y" "z"))
+        (company-candidates-length 3)
+        (company-backend 'ignore))
+    (should (equal '(" x 1 " " y 2 " " z 3 ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-truncates-annotations ()
+  (let* ((ww (company--window-width))
+         (data `(("1" . "(123)")
+                 ("2" . nil)
+                 ("3" . ,(concat "(" (make-string (- ww 2) ?4) ")"))
+                 (,(make-string ww ?4) . "<4>")))
+         (company-candidates (mapcar #'car data))
+         (company-candidates-length 4)
+         (company-tooltip-margin 1)
+         (company-backend (lambda (cmd &optional arg)
+                            (when (eq cmd 'annotation)
+                              (cdr (assoc arg data)))))
+         company-tooltip-align-annotations)
+    (should (equal (list (format " 1(123)%s " (company-space-string (- ww 8)))
+                         (format " 2%s " (company-space-string (- ww 3)))
+                         (format " 3(444%s " (make-string (- ww 7) ?4))
+                         (format " %s " (make-string (- ww 2) ?4)))
+                   (company--create-lines 0 999)))
+    (let ((company-tooltip-align-annotations t))
+      (should (equal (list (format " 1%s(123) " (company-space-string (- ww 
8)))
+                           (format " 2%s " (company-space-string (- ww 3)))
+                           (format " 3 (444%s " (make-string (- ww 8) ?4))
+                           (format " %s " (make-string (- ww 2) ?4)))
+                     (company--create-lines 0 999))))))
+
+(ert-deftest company-create-lines-truncates-common-part ()
+  (let* ((ww (company--window-width))
+         (company-candidates-length 2)
+         (company-tooltip-margin 1)
+         (company-backend #'ignore))
+    (let* ((company-common (make-string (- ww 3) ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3"))))
+      (should (equal (list (format " %s2 " (make-string (- ww 3) ?1))
+                           (format " %s3 " (make-string (- ww 3) ?1)))
+                     (company--create-lines 0 999))))
+    (let* ((company-common (make-string (- ww 2) ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3"))))
+      (should (equal (list (format " %s " company-common)
+                           (format " %s " company-common))
+                     (company--create-lines 0 999))))
+    (let* ((company-common (make-string ww ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3")))
+           (res (company--create-lines 0 999)))
+      (should (equal (list (format " %s " (make-string (- ww 2) ?1))
+                           (format " %s " (make-string (- ww 2) ?1)))
+                     res))
+      (should (eq 'company-tooltip-common-selection
+                    (get-text-property (- ww 2) 'face
+                                       (car res))))
+      (should (eq 'company-tooltip-selection
+                  (get-text-property (1- ww) 'face
+                                     (car res))))
+      )))
+
+(ert-deftest company-create-lines-clears-out-non-printables ()
+  :tags '(interactive)
+  (let (company-show-numbers
+        (company-candidates (list
+                             (decode-coding-string "avalis\351e" 'utf-8)
+                             "avatar"))
+        (company-candidates-length 2)
+        (company-backend 'ignore))
+    (should (equal '(" avalis‗e "
+                     " avatar   ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-handles-multiple-width ()
+  :tags '(interactive)
+  (let (company-show-numbers
+        (company-candidates '("蛙蛙蛙蛙" "蛙abc"))
+        (company-candidates-length 2)
+        (company-backend 'ignore))
+    (should (equal '(" 蛙蛙蛙蛙 "
+                     " 蛙abc    ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-handles-multiple-width-in-annotation ()
+  (let* (company-show-numbers
+         (alist '(("a" . " ︸") ("b" . " ︸︸")))
+         (company-candidates (mapcar #'car alist))
+         (company-candidates-length 2)
+         (company-backend (lambda (c &optional a)
+                            (when (eq c 'annotation)
+                              (assoc-default a alist)))))
+    (should (equal '(" a ︸   "
+                     " b ︸︸ ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-column-with-composition ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "lambda ()")
+      (compose-region 1 (1+ (length "lambda")) "\\")
+      (should (= (company--column) 4)))))
+
+(ert-deftest company-plainify ()
+  (let ((tab-width 8))
+    (should (equal-including-properties
+             (company-plainify "\tabc\td\t")
+             (concat "        "
+                     "abc     "
+                     "d       "))))
+  (should (equal-including-properties
+           (company-plainify (propertize "foobar" 'line-prefix "-*-"))
+           "-*-foobar")))
+
+(ert-deftest company-buffer-lines-with-lines-folded ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (insert (propertize "aaa\nbbb\nccc\nddd\n" 'display "aaa+\n"))
+    (insert "eee\nfff\nggg")
+    (should (equal (company-buffer-lines (point-min) (point-max))
+                   '("aaa" "eee" "fff" "ggg")))))
+
+(ert-deftest company-buffer-lines-with-multiline-display ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (insert (propertize "a" 'display "bbb\nccc\ndddd\n"))
+    (insert "eee\nfff\nggg")
+    (should (equal (company-buffer-lines (point-min) (point-max))
+                   '("" "" "" "eee" "fff" "ggg")))))
+
+(ert-deftest company-modify-line ()
+  (let ((str "-*-foobar"))
+    (should (equal-including-properties
+             (company-modify-line str "zz" 4)
+             "-*-fzzbar"))
+    (should (equal-including-properties
+             (company-modify-line str "xx" 0)
+             "xx-foobar"))
+    (should (equal-including-properties
+             (company-modify-line str "zz" 10)
+             "-*-foobar zz"))))
+
+(ert-deftest company-scrollbar-bounds ()
+  (should (equal nil (company--scrollbar-bounds 0 3 3)))
+  (should (equal nil (company--scrollbar-bounds 0 4 3)))
+  (should (equal '(0 . 0) (company--scrollbar-bounds 0 1 2)))
+  (should (equal '(1 . 1) (company--scrollbar-bounds 2 2 4)))
+  (should (equal '(2 . 3) (company--scrollbar-bounds 7 4 12)))
+  (should (equal '(1 . 2) (company--scrollbar-bounds 3 4 12)))
+  (should (equal '(1 . 3) (company--scrollbar-bounds 4 5 11))))
diff --git a/test/keywords-tests.el b/test/keywords-tests.el
new file mode 100644
index 0000000..05843b2
--- /dev/null
+++ b/test/keywords-tests.el
@@ -0,0 +1,32 @@
+;;; keywords-tests.el --- company-keywords tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2011, 2013-2015  Free Software Foundation, Inc.
+
+;; Author: Nikolaj Schumacher
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-keywords)
+
+(ert-deftest company-sorted-keywords ()
+  "Test that keywords in `company-keywords-alist' are in alphabetical order."
+  (dolist (pair company-keywords-alist)
+    (when (consp (cdr pair))
+      (let ((prev (cadr pair)))
+        (dolist (next (cddr pair))
+          (should (not (equal prev next)))
+          (should (string< prev next))
+          (setq prev next))))))
diff --git a/test/template-tests.el b/test/template-tests.el
new file mode 100644
index 0000000..09548c4
--- /dev/null
+++ b/test/template-tests.el
@@ -0,0 +1,91 @@
+;;; template-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+(require 'company-template)
+
+(ert-deftest company-template-removed-after-the-last-jump ()
+  (with-temp-buffer
+    (insert "{ }")
+    (goto-char 2)
+    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
+      (save-excursion
+        (dotimes (_ 2)
+          (insert " ")
+          (company-template-add-field tpl (point) "foo")))
+      (company-call 'template-forward-field)
+      (should (= 3 (point)))
+      (company-call 'template-forward-field)
+      (should (= 7 (point)))
+      (company-call 'template-forward-field)
+      (should (= 11 (point)))
+      (should (zerop (length (overlay-get tpl 'company-template-fields))))
+      (should (null (overlay-buffer tpl))))))
+
+(ert-deftest company-template-removed-after-input-and-jump ()
+  (with-temp-buffer
+    (insert "{ }")
+    (goto-char 2)
+    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
+      (save-excursion
+        (insert " ")
+        (company-template-add-field tpl (point) "bar"))
+      (company-call 'template-move-to-first tpl)
+      (should (= 3 (point)))
+      (dolist (c (string-to-list "tee"))
+        (let ((last-command-event c))
+          (company-call 'self-insert-command 1)))
+      (should (string= "{ tee }" (buffer-string)))
+      (should (overlay-buffer tpl))
+      (company-call 'template-forward-field)
+      (should (= 7 (point)))
+      (should (null (overlay-buffer tpl))))))
+
+(ert-deftest company-template-c-like-templatify ()
+  (with-temp-buffer
+    (let ((text "foo(int a, short b)"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo(arg0, arg1)" (buffer-string)))
+      (should (looking-at "arg0"))
+      (should (equal "int a"
+                     (overlay-get (company-template-field-at) 'display))))))
+
+(ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
+  (with-temp-buffer
+    (let ((text "foo(int a, short b)!@ #1334 a"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo(arg0, arg1)" (buffer-string)))
+      (should (looking-at "arg0")))))
+
+(ert-deftest company-template-c-like-templatify-generics ()
+  (with-temp-buffer
+    (let ((text "foo<TKey, TValue>(int i, Dict<TKey, TValue>, long l)"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo<arg0, arg1>(arg2, arg3, arg4)" (buffer-string)))
+      (should (looking-at "arg0"))
+      (should (equal "TKey" (overlay-get (company-template-field-at) 
'display)))
+      (search-forward "arg3")
+      (forward-char -1)
+      (should (equal "Dict<TKey, TValue>"
+                     (overlay-get (company-template-field-at) 'display))))))
diff --git a/test/transformers-tests.el b/test/transformers-tests.el
new file mode 100644
index 0000000..4d027e5
--- /dev/null
+++ b/test/transformers-tests.el
@@ -0,0 +1,58 @@
+;;; transformers-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-occurrence-prefer-closest-above ()
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo0
+foo1
+")
+      (save-excursion
+        (insert "
+foo3
+foo2"))
+      (let ((company-backend 'company-dabbrev)
+            (company-occurrence-weight-function
+             'company-occurrence-prefer-closest-above))
+        (should (equal '("foo1" "foo0" "foo3" "foo2" "foo4")
+                       (company-sort-by-occurrence
+                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
+
+(ert-deftest company-occurrence-prefer-any-closest ()
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo0
+foo1
+")
+      (save-excursion
+        (insert "
+foo3
+foo2"))
+      (let ((company-backend 'company-dabbrev)
+            (company-occurrence-weight-function
+             'company-occurrence-prefer-any-closest))
+        (should (equal '("foo1" "foo3" "foo0" "foo2" "foo4")
+                       (company-sort-by-occurrence
+                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))



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