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[GNUnet-SVN] [taler-exchange] branch master updated: new test interprete
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From: |
gnunet |
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Subject: |
[GNUnet-SVN] [taler-exchange] branch master updated: new test interpreter architecture, first draft |
|
Date: |
Sun, 21 Jan 2018 15:39:53 +0100 |
This is an automated email from the git hooks/post-receive script.
grothoff pushed a commit to branch master
in repository exchange.
The following commit(s) were added to refs/heads/master by this push:
new 82b0eda new test interpreter architecture, first draft
82b0eda is described below
commit 82b0eda3ef736ea59c425141dba7d19c762248e5
Author: Christian Grothoff <address@hidden>
AuthorDate: Sun Jan 21 15:39:48 2018 +0100
new test interpreter architecture, first draft
---
.gitignore | 1 +
src/exchange-lib/Makefile.am | 45 ++-
src/exchange-lib/test_exchange_api.c | 4 +-
src/exchange-lib/test_exchange_api_new.c | 332 +++++++++++++++++++++
.../testing_api_cmd_fakebank_transfer.c | 311 +++++++++++++++++++
src/exchange-lib/testing_api_cmd_withdraw.c | 193 ++++++++++++
src/exchange-lib/testing_api_loop.c | 327 ++++++++++++++++++++
src/exchange-lib/testing_api_trait_coin_priv.c | 67 +++++
src/exchange-lib/testing_api_trait_reserve_priv.c | 65 ++++
src/exchange-lib/testing_api_traits.c | 70 +++++
src/include/Makefile.am | 1 +
src/include/taler_testing_lib.h | 262 ++++++++++++++++
12 files changed, 1671 insertions(+), 7 deletions(-)
diff --git a/.gitignore b/.gitignore
index 16a2c2d..7bf23b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -92,3 +92,4 @@ contrib/auditor-report.log
contrib/auditor-report.tex
contrib/auditor-report.pdf
src/bank-lib/taler-bank-transfer
+src/exchange-lib/test_exchange_api_new
diff --git a/src/exchange-lib/Makefile.am b/src/exchange-lib/Makefile.am
index 8aad8c9..202e52a 100644
--- a/src/exchange-lib/Makefile.am
+++ b/src/exchange-lib/Makefile.am
@@ -7,12 +7,12 @@ if USE_COVERAGE
endif
lib_LTLIBRARIES = \
- libtalerexchange.la
+ libtalerexchange.la \
+ libtalertesting.la
libtalerexchange_la_LDFLAGS = \
-version-info 4:0:0 \
-no-undefined
-
libtalerexchange_la_SOURCES = \
exchange_api_common.c \
exchange_api_handle.c exchange_api_handle.h \
@@ -25,7 +25,6 @@ libtalerexchange_la_SOURCES = \
exchange_api_track_transaction.c \
exchange_api_track_transfer.c \
exchange_api_wire.c
-
libtalerexchange_la_LIBADD = \
$(top_builddir)/src/json/libtalerjson.la \
$(top_builddir)/src/util/libtalerutil.la \
@@ -35,6 +34,26 @@ libtalerexchange_la_LIBADD = \
-ljansson \
$(XLIB)
+
+libtalertesting_la_LDFLAGS = \
+ -version-info 0:0:0 \
+ -no-undefined
+libtalertesting_la_SOURCES = \
+ testing_api_loop.c \
+ testing_api_traits.c \
+ testing_api_cmd_fakebank_transfer.c \
+ testing_api_trait_reserve_priv.c \
+ testing_api_trait_coin_priv.c
+
+libtalertesting_la_LIBADD = \
+ $(top_builddir)/src/json/libtalerjson.la \
+ $(top_builddir)/src/util/libtalerutil.la \
+ -lgnunetcurl \
+ -lgnunetjson \
+ -lgnunetutil \
+ -ljansson \
+ $(XLIB)
+
if HAVE_LIBCURL
libtalerexchange_la_LIBADD += -lcurl
else
@@ -45,12 +64,14 @@ endif
check_PROGRAMS = \
test_exchange_api \
- test_exchange_api_keys_cherry_picking
+ test_exchange_api_keys_cherry_picking \
+ test_exchange_api_new
AM_TESTS_ENVIRONMENT=export
TALER_PREFIX=$${TALER_PREFIX:address@hidden@};export
PATH=$${TALER_PREFIX:address@hidden@}/bin:$$PATH;
TESTS = \
- $(check_PROGRAMS)
+ test_exchange_api \
+ test_exchange_api_keys_cherry_picking
test_exchange_api_SOURCES = \
test_exchange_api.c
@@ -65,6 +86,20 @@ test_exchange_api_LDADD = \
-lgnunetutil \
-ljansson
+test_exchange_api_new_SOURCES = \
+ test_exchange_api_new.c
+test_exchange_api_new_LDADD = \
+ libtalertesting.la \
+ libtalerexchange.la \
+ $(LIBGCRYPT_LIBS) \
+ $(top_builddir)/src/bank-lib/libtalerfakebank.la \
+ $(top_builddir)/src/bank-lib/libtalerbank.la \
+ $(top_builddir)/src/json/libtalerjson.la \
+ $(top_builddir)/src/util/libtalerutil.la \
+ -lgnunetcurl \
+ -lgnunetutil \
+ -ljansson
+
test_exchange_api_keys_cherry_picking_SOURCES = \
test_exchange_api_keys_cherry_picking.c
test_exchange_api_keys_cherry_picking_LDADD = \
diff --git a/src/exchange-lib/test_exchange_api.c
b/src/exchange-lib/test_exchange_api.c
index bccd4f9..a276d5c 100644
--- a/src/exchange-lib/test_exchange_api.c
+++ b/src/exchange-lib/test_exchange_api.c
@@ -3612,7 +3612,7 @@ run (void *cls)
.details.refund.fee = "EUR:0.01",
.details.refund.deposit_ref = "deposit-refund-1b",
},
- /* Run transfers. This will do the transfer as refund deadline
+ /* Run transfers. This will do the transfer as refund deadline
was 0, except of course because the refund succeeded, the
transfer should no longer be done. */
{ .oc = OC_RUN_AGGREGATOR,
@@ -3621,7 +3621,7 @@ run (void *cls)
{ .oc = OC_CHECK_BANK_TRANSFERS_EMPTY,
.label = "check-refund-fast-not-run" },
-
+
/* ************** End of refund API testing************* */
/* ************** Test /payback API ************* */
diff --git a/src/exchange-lib/test_exchange_api_new.c
b/src/exchange-lib/test_exchange_api_new.c
new file mode 100644
index 0000000..573e900
--- /dev/null
+++ b/src/exchange-lib/test_exchange_api_new.c
@@ -0,0 +1,332 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2014-2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange/test_exchange_api_new.c
+ * @brief testcase to test exchange's HTTP API interface
+ * @author Sree Harsha Totakura <address@hidden>
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_signatures.h"
+#include "taler_exchange_service.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <microhttpd.h>
+#include "taler_bank_service.h"
+#include "taler_fakebank_lib.h"
+#include "taler_testing_lib.h"
+
+
+/**
+ * Is the configuration file is set to include wire format 'test'?
+ */
+#define WIRE_TEST 1
+
+/**
+ * Is the configuration file is set to include wire format 'sepa'?
+ */
+#define WIRE_SEPA 1
+
+/**
+ * Account number of the exchange at the bank.
+ */
+#define EXCHANGE_ACCOUNT_NO 2
+
+/**
+ * Handle to access the exchange.
+ */
+// static struct TALER_EXCHANGE_Handle *exchange;
+
+
+/**
+ * Pipe used to communicate child death via signal.
+ */
+static struct GNUNET_DISK_PipeHandle *sigpipe;
+
+/**
+ * Handle to the exchange process.
+ */
+static struct GNUNET_OS_Process *exchanged;
+
+
+/**
+ * Handle to our fakebank.
+ */
+static struct TALER_FAKEBANK_Handle *fakebank;
+
+
+
+
+/**
+ * Function run when the test terminates (good or bad).
+ * Cleans up our state.
+ *
+ * @param cls NULL
+ */
+static void
+do_shutdown (void *cls)
+{
+ if (NULL != fakebank)
+ {
+ TALER_FAKEBANK_stop (fakebank);
+ fakebank = NULL;
+ }
+}
+
+
+/**
+ * Main function that will tell the interpreter what to do.
+ *
+ * @param cls closure
+ */
+static void
+run (void *cls,
+ struct TALER_TESTING_Interpreter *is)
+{
+ struct TALER_TESTING_Command commands[] = {
+ TALER_TESTING_cmd_fakebank_transfer ("create-reserve-1",
+ "EUR:5.01",
+ 42,
+ EXCHANGE_ACCOUNT_NO,
+ "user42",
+ "pass42"),
+ TALER_TESTING_cmd_end ()
+ };
+
+ fakebank = TALER_FAKEBANK_start (8082);
+ TALER_TESTING_run (is,
+ commands);
+ GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
+ NULL);
+}
+
+
+/**
+ * Signal handler called for SIGCHLD. Triggers the
+ * respective handler by writing to the trigger pipe.
+ */
+static void
+sighandler_child_death ()
+{
+ static char c;
+ int old_errno = errno; /* back-up errno */
+
+ GNUNET_break (1 ==
+ GNUNET_DISK_file_write (GNUNET_DISK_pipe_handle
+ (sigpipe, GNUNET_DISK_PIPE_END_WRITE),
+ &c, sizeof (c)));
+ errno = old_errno; /* restore errno */
+}
+
+
+
+/**
+ * Remove files from previous runs
+ */
+static void
+cleanup_files ()
+{
+ struct GNUNET_CONFIGURATION_Handle *cfg;
+ char *dir;
+
+ cfg = GNUNET_CONFIGURATION_create ();
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_load (cfg,
+ "test_exchange_api.conf"))
+ {
+ GNUNET_break (0);
+ GNUNET_CONFIGURATION_destroy (cfg);
+ exit (77);
+ }
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_filename (cfg,
+ "exchange",
+ "keydir",
+ &dir));
+ if (GNUNET_YES ==
+ GNUNET_DISK_directory_test (dir,
+ GNUNET_NO))
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_DISK_directory_remove (dir));
+ GNUNET_free (dir);
+ GNUNET_CONFIGURATION_destroy (cfg);
+}
+
+
+
+
+int
+main (int argc,
+ char * const *argv)
+{
+ struct GNUNET_OS_Process *proc;
+ struct GNUNET_SIGNAL_Context *shc_chld;
+ enum GNUNET_OS_ProcessStatusType type;
+ unsigned long code;
+ unsigned int iter;
+ int result;
+
+ /* These might get in the way... */
+ unsetenv ("XDG_DATA_HOME");
+ unsetenv ("XDG_CONFIG_HOME");
+ GNUNET_log_setup ("test-exchange-api",
+ "INFO",
+ NULL);
+ if (GNUNET_OK !=
+ GNUNET_NETWORK_test_port_free (IPPROTO_TCP,
+ 8081))
+ {
+ fprintf (stderr,
+ "Required port %u not available, skipping.\n",
+ 8081);
+ return 77;
+ }
+ if (GNUNET_OK !=
+ GNUNET_NETWORK_test_port_free (IPPROTO_TCP,
+ 8082))
+ {
+ fprintf (stderr,
+ "Required port %u not available, skipping.\n",
+ 8082);
+ return 77;
+ }
+ cleanup_files ();
+
+ proc = GNUNET_OS_start_process (GNUNET_NO,
+ GNUNET_OS_INHERIT_STD_ALL,
+ NULL, NULL, NULL,
+ "taler-exchange-keyup",
+ "taler-exchange-keyup",
+ "-c", "test_exchange_api.conf",
+ "-o", "auditor.in",
+ NULL);
+ if (NULL == proc)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to run `taler-exchange-keyup`, is your PATH
correct?\n");
+ return 77;
+ }
+ GNUNET_OS_process_wait (proc);
+ GNUNET_OS_process_destroy (proc);
+
+ proc = GNUNET_OS_start_process (GNUNET_NO,
+ GNUNET_OS_INHERIT_STD_ALL,
+ NULL, NULL, NULL,
+ "taler-auditor-sign",
+ "taler-auditor-sign",
+ "-c", "test_exchange_api.conf",
+ "-u", "http://auditor/";,
+ "-m",
"98NJW3CQHZQGQXTY3K85K531XKPAPAVV4Q5V8PYYRR00NJGZWNVG",
+ "-r", "auditor.in",
+ "-o",
"test_exchange_api_home/.local/share/taler/auditors/auditor.out",
+ NULL);
+ if (NULL == proc)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to run `taler-exchange-keyup`, is your PATH
correct?\n");
+ return 77;
+ }
+ GNUNET_OS_process_wait (proc);
+ GNUNET_OS_process_destroy (proc);
+
+ proc = GNUNET_OS_start_process (GNUNET_NO,
+ GNUNET_OS_INHERIT_STD_ALL,
+ NULL, NULL, NULL,
+ "taler-exchange-dbinit",
+ "taler-exchange-dbinit",
+ "-c", "test_exchange_api.conf",
+ "-r",
+ NULL);
+ if (NULL == proc)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to run `taler-exchange-dbinit`, is your PATH
correct?\n");
+ return 77;
+ }
+ if (GNUNET_SYSERR ==
+ GNUNET_OS_process_wait_status (proc,
+ &type,
+ &code))
+ {
+ GNUNET_break (0);
+ GNUNET_OS_process_destroy (proc);
+ return 1;
+ }
+ GNUNET_OS_process_destroy (proc);
+ if ( (type == GNUNET_OS_PROCESS_EXITED) &&
+ (0 != code) )
+ {
+ fprintf (stderr,
+ "Failed to setup database\n");
+ return 77;
+ }
+ if ( (type != GNUNET_OS_PROCESS_EXITED) ||
+ (0 != code) )
+ {
+ fprintf (stderr,
+ "Unexpected error running `taler-exchange-dbinit'!\n");
+ return 1;
+ }
+ exchanged = GNUNET_OS_start_process (GNUNET_NO,
+ GNUNET_OS_INHERIT_STD_ALL,
+ NULL, NULL, NULL,
+ "taler-exchange-httpd",
+ "taler-exchange-httpd",
+ "-c", "test_exchange_api.conf",
+ "-i",
+ NULL);
+ /* give child time to start and bind against the socket */
+ fprintf (stderr,
+ "Waiting for `taler-exchange-httpd' to be ready");
+ iter = 0;
+ do
+ {
+ if (10 == iter)
+ {
+ fprintf (stderr,
+ "Failed to launch `taler-exchange-httpd' (or `wget')\n");
+ GNUNET_OS_process_kill (exchanged,
+ SIGTERM);
+ GNUNET_OS_process_wait (exchanged);
+ GNUNET_OS_process_destroy (exchanged);
+ return 77;
+ }
+ fprintf (stderr, ".");
+ sleep (1);
+ iter++;
+ }
+ while (0 != system ("wget -q -t 1 -T 1 http://127.0.0.1:8081/keys -o
/dev/null -O /dev/null"));
+ fprintf (stderr, "\n");
+ sigpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO,
+ GNUNET_NO, GNUNET_NO);
+ GNUNET_assert (NULL != sigpipe);
+ shc_chld = GNUNET_SIGNAL_handler_install (GNUNET_SIGCHLD,
+ &sighandler_child_death);
+
+ result = TALER_TESTING_setup (&run, NULL);
+
+ GNUNET_SIGNAL_handler_uninstall (shc_chld);
+ shc_chld = NULL;
+ GNUNET_DISK_pipe_close (sigpipe);
+ GNUNET_break (0 ==
+ GNUNET_OS_process_kill (exchanged,
+ SIGTERM));
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_OS_process_wait (exchanged));
+ GNUNET_OS_process_destroy (exchanged);
+ return (GNUNET_OK == result) ? 0 : 1;
+}
diff --git a/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
b/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
new file mode 100644
index 0000000..a5f5be3
--- /dev/null
+++ b/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
@@ -0,0 +1,311 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_cmd_fakebank_transfer.c
+ * @brief implementation of a fakebank wire transfer command
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_bank_service.h"
+#include "taler_fakebank_lib.h"
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+/**
+ *
+ */
+struct FakebankTransferState
+{
+
+ /**
+ * Label to another admin_add_incoming command if we
+ * should deposit into an existing reserve, NULL if
+ * a fresh reserve should be created.
+ */
+ const char *reserve_reference;
+
+ /**
+ * String describing the amount to add to the reserve.
+ */
+ struct TALER_Amount amount;
+
+ /**
+ * Wire transfer subject. NULL to use public key corresponding
+ * to @e reserve_priv or @e reserve_reference. Should only be
+ * set manually to test invalid wire transfer subjects.
+ */
+ const char *subject;
+
+ /**
+ * Sender (debit) account number.
+ */
+ uint64_t debit_account_no;
+
+ /**
+ * Receiver (credit) account number.
+ */
+ uint64_t credit_account_no;
+
+ /**
+ * Username to use for authentication.
+ */
+ const char *auth_username;
+
+ /**
+ * Password to use for authentication.
+ */
+ const char *auth_password;
+
+ /**
+ * Set (by the interpreter) to the reserve's private key
+ * we used to fill the reserve.
+ */
+ struct TALER_ReservePrivateKeyP reserve_priv;
+
+ /**
+ * Set to the API's handle during the operation.
+ */
+ struct TALER_BANK_AdminAddIncomingHandle *aih;
+
+ /**
+ * Interpreter state while command is running.
+ */
+ struct TALER_TESTING_Interpreter *is;
+
+ /**
+ * Set to the wire transfer's unique ID.
+ */
+ uint64_t serial_id;
+
+};
+
+
+/**
+ * Function called upon completion of our /admin/add/incoming request.
+ *
+ * @param cls closure with the interpreter state
+ * @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful
status request
+ * 0 if the exchange's reply is bogus (fails to follow the
protocol)
+ * @param ec taler-specific error code, #TALER_EC_NONE on success
+ * @param serial_id unique ID of the wire transfer
+ * @param full_response full response from the exchange (for logging, in case
of errors)
+ */
+static void
+add_incoming_cb (void *cls,
+ unsigned int http_status,
+ enum TALER_ErrorCode ec,
+ uint64_t serial_id,
+ const json_t *full_response)
+{
+ struct FakebankTransferState *fts = cls;
+ struct TALER_TESTING_Interpreter *is = fts->is;
+
+ fts->aih = NULL;
+ fts->serial_id = serial_id;
+ if (MHD_HTTP_OK != http_status)
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+ TALER_TESTING_interpreter_next (is);
+}
+
+
+/**
+ * Runs the command. Note that upon return, the interpreter
+ * will not automatically run the next command, as the command
+ * may continue asynchronously in other scheduler tasks. Thus,
+ * the command must ensure to eventually call
+ * #TALER_TESTING_interpreter_next() or
+ * #TALER_TESTING_interpreter_fail().
+ *
+ * @param is interpreter state
+ */
+static void
+fakebank_transfer_run (void *cls,
+ const struct TALER_TESTING_Command *cmd,
+ struct TALER_TESTING_Interpreter *is)
+{
+ struct FakebankTransferState *fts = cls;
+ char *subject;
+ struct TALER_BANK_AuthenticationData auth;
+ struct TALER_ReservePublicKeyP reserve_pub;
+
+ if (NULL != fts->subject)
+ {
+ subject = GNUNET_strdup (fts->subject);
+ }
+ else
+ {
+ /* Use reserve public key as subject */
+#if FIXME_NEEDS_TRAIT
+ if (NULL != fts->reserve_reference)
+ {
+ ref = find_command (is,
+ fts->reserve_reference);
+ GNUNET_assert (NULL != ref);
+ GNUNET_assert (OC_ADMIN_ADD_INCOMING == ref->oc);
+ // FIXME: needs trait...
+ fts->reserve_priv = ref->details.admin_add_incoming.reserve_priv;
+ }
+ else
+ {
+#endif
+ struct GNUNET_CRYPTO_EddsaPrivateKey *priv;
+
+ priv = GNUNET_CRYPTO_eddsa_key_create ();
+ fts->reserve_priv.eddsa_priv = *priv;
+ GNUNET_free (priv);
+#if FIXME_NEEDS_TRAIT
+ }
+#endif
+ GNUNET_CRYPTO_eddsa_key_get_public (&fts->reserve_priv.eddsa_priv,
+ &reserve_pub.eddsa_pub);
+ subject = GNUNET_STRINGS_data_to_string_alloc (&reserve_pub,
+ sizeof (reserve_pub));
+ }
+
+ auth.method = TALER_BANK_AUTH_BASIC;
+ auth.details.basic.username = (char *) fts->auth_username;
+ auth.details.basic.password = (char *) fts->auth_password;
+ fts->is = is;
+ fts->aih
+ = TALER_BANK_admin_add_incoming (TALER_TESTING_interpreter_get_context
(is),
+ "http://localhost:8082/";, /* bank URL:
FIXME */
+ &auth,
+ "https://exchange.com/";, /* exchange URL:
FIXME */
+ subject,
+ &fts->amount,
+ fts->debit_account_no,
+ fts->credit_account_no,
+ &add_incoming_cb,
+ fts);
+ GNUNET_free (subject);
+ if (NULL == fts->aih)
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+}
+
+
+/**
+ * Clean up after the command. Run during forced termination
+ * (CTRL-C) or test failure or test success.
+ *
+ * @param cls closure
+ */
+static void
+fakebank_transfer_cleanup (void *cls,
+ const struct TALER_TESTING_Command *cmd)
+{
+ struct FakebankTransferState *fts = cls;
+
+ if (NULL != fts->aih)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Command %s did not complete\n",
+ cmd->label);
+ TALER_BANK_admin_add_incoming_cancel (fts->aih);
+ }
+ GNUNET_free (fts);
+}
+
+
+/**
+ * Extract information from a command that is useful for other
+ * commands.
+ *
+ * @param cls closure
+ * @param ret[out] result (could be anything)
+ * @param trait name of the trait
+ * @param selector more detailed information about which object
+ * to return in case there were multiple generated
+ * by the command
+ * @return #GNUNET_OK on success
+ */
+static int
+fakebank_transfer_traits (void *cls,
+ void **ret,
+ const char *trait,
+ const char *selector)
+{
+ struct FakebankTransferState *fts = cls;
+ struct TALER_TESTING_Trait traits[] = {
+ TALER_TESTING_make_trait_reserve_priv (NULL,
+ &fts->reserve_priv),
+ TALER_TESTING_trait_end ()
+ };
+
+ if (NULL != fts->subject)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR; /* we do NOT create a reserve private key */
+ }
+ return TALER_TESTING_get_trait (traits,
+ ret,
+ trait,
+ selector);
+}
+
+
+/**
+ * Create fakebank_transfer command.
+ *
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_fakebank_transfer (const char *label,
+ const char *amount,
+ uint64_t debit_account_no,
+ uint64_t credit_account_no,
+ const char *auth_username,
+ const char *auth_password)
+{
+ struct TALER_TESTING_Command cmd;
+ struct FakebankTransferState *fts;
+
+ fts = GNUNET_new (struct FakebankTransferState);
+ fts->credit_account_no = credit_account_no;
+ fts->debit_account_no = debit_account_no;
+ fts->auth_username = auth_username;
+ fts->auth_password = auth_password;
+ if (GNUNET_OK !=
+ TALER_string_to_amount (amount,
+ &fts->amount))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to parse amount `%s' at %s\n",
+ amount,
+ label);
+ GNUNET_assert (0);
+ }
+ cmd.cls = fts;
+ cmd.label = label;
+ cmd.run = &fakebank_transfer_run;
+ cmd.cleanup = &fakebank_transfer_cleanup;
+ cmd.traits = &fakebank_transfer_traits;
+ return cmd;
+}
+
+
+/* end of testing_api_cmd_fakebank_transfer.c */
diff --git a/src/exchange-lib/testing_api_cmd_withdraw.c
b/src/exchange-lib/testing_api_cmd_withdraw.c
new file mode 100644
index 0000000..bee467e
--- /dev/null
+++ b/src/exchange-lib/testing_api_cmd_withdraw.c
@@ -0,0 +1,193 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_cmd_withdraw.c
+ * @brief main interpreter loop for testcases
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+
+
+struct WithdrawState
+{
+
+ /**
+ * Which reserve should we withdraw from?
+ */
+ const char *reserve_reference;
+
+ /**
+ * String describing the denomination value we should withdraw.
+ * A corresponding denomination key must exist in the exchange's
+ * offerings. Can be NULL if @e pk is set instead.
+ */
+ struct TALER_Amount amount;
+
+ /**
+ * If @e amount is NULL, this specifies the denomination key to
+ * use. Otherwise, this will be set (by the interpreter) to the
+ * denomination PK matching @e amount.
+ */
+ const struct TALER_EXCHANGE_DenomPublicKey *pk;
+
+ /**
+ * Set (by the interpreter) to the exchange's signature over the
+ * coin's public key.
+ */
+ struct TALER_DenominationSignature sig;
+
+ /**
+ * Private key material of the coin, set by the interpreter.
+ */
+ struct TALER_PlanchetSecretsP ps;
+
+ /**
+ * Withdraw handle (while operation is running).
+ */
+ struct TALER_EXCHANGE_ReserveWithdrawHandle *wsh;
+
+};
+
+
+ /**
+ * Runs the command. Note that upon return, the interpreter
+ * will not automatically run the next command, as the command
+ * may continue asynchronously in other scheduler tasks. Thus,
+ * the command must ensure to eventually call
+ * #TALER_TESTING_interpreter_next() or
+ * #TALER_TESTING_interpreter_fail().
+ *
+ * @param i interpreter state
+ */
+static void
+withdraw_run (void *cls,
+ struct TALER_TESTING_Interpreter *i)
+{
+ struct WithdrawState *ws = cls;
+ struct TALER_ReservePrivateKeyP rp;
+ struct TALER_TESTING_Command *create_reserve;
+
+ create_reserve
+ = TALER_TESTING_interpreter_lookup_command (i,
+ ws->reserve_reference);
+ if (NULL == create_reserve)
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (i);
+ return;
+ }
+ if (GNUNET_OK !=
+ TALER_TESTING_get_trait_reserve_priv (create_reserve,
+ NULL,
+ &rp))
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (i);
+ return;
+ }
+ // ... trigger withdraw
+ // ... eventually: TALER_TESTING_interpreter_next (i);
+}
+
+
+/**
+ * Clean up after the command. Run during forced termination
+ * (CTRL-C) or test failure or test success.
+ *
+ * @param cls closure
+ */
+static void
+withdraw_cleanup (void *cls)
+{
+ struct WithdrawState *ws = cls;
+
+}
+
+
+/**
+ * Extract information from a command that is useful for other
+ * commands.
+ *
+ * @param cls closure
+ * @param ret[out] result (could be anything)
+ * @param trait name of the trait
+ * @param selector more detailed information about which object
+ * to return in case there were multiple generated
+ * by the command
+ * @return #GNUNET_OK on success
+ */
+static int
+withdraw_traits (void *cls,
+ void **ret,
+ const char *trait,
+ const char *selector)
+{
+ struct WithdrawState *ws = cls;
+ struct TALER_INTERPRETER_Trait traits[] = {
+ TALER_TESTING_make_trait_coin_priv (NULL /* only one coin */,
+ &ws->ps.coin_priv),
+#if 0
+ TALER_TESTING_make_trait_coin_blinding_key (NULL /* only one coin */,
+ &ws->ps.blinding_key),
+ TALER_TESTING_make_trait_coin_denomination_key (NULL /* only one coin */,
+ ws->pk),
+ TALER_TESTING_make_trait_coin_denomination_sig (NULL /* only one coin */,
+ &ws->sig),
+#endif
+ TALER_TESTING_trait_end ()
+ };
+
+ return TALER_TESTING_get_trait (traits,
+ ret,
+ trait,
+ selector);
+}
+
+
+/**
+ * Create withdraw command.
+ *
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_withdraw_amount (const char *label,
+ const char *reserve_reference,
+ const char *amount)
+{
+ struct TALER_TESTING_Command cmd;
+ struct WithdrawState *ws;
+
+ ws = GNUNET_new (struct WithdrawState);
+ ws->reserve_reference = reserve_reference;
+ // convert amount -> ws->amount;
+ cmd.cls = ws;
+ cmd.label = label;
+ cmd.run = &withdraw_run;
+ cmd.cleanup = &withdraw_cleanup;
+ cmd.traits = &withdraw_traits;
+ return cmd;
+}
+
+
+
+
+
+/* end of testing_api_cmd_withdraw.c */
diff --git a/src/exchange-lib/testing_api_loop.c
b/src/exchange-lib/testing_api_loop.c
new file mode 100644
index 0000000..ae721f6
--- /dev/null
+++ b/src/exchange-lib/testing_api_loop.c
@@ -0,0 +1,327 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_loop.c
+ * @brief main interpreter loop for testcases
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+/**
+ * Global state of the interpreter, used by a command
+ * to access information about other commands.
+ */
+struct TALER_TESTING_Interpreter
+{
+
+ /**
+ * Commands the interpreter will run.
+ */
+ struct TALER_TESTING_Command *commands;
+
+ /**
+ * Interpreter task (if one is scheduled).
+ */
+ struct GNUNET_SCHEDULER_Task *task;
+
+ /**
+ * Main execution context for the main loop.
+ */
+ struct GNUNET_CURL_Context *ctx;
+
+ /**
+ * Context for running the CURL event loop.
+ */
+ struct GNUNET_CURL_RescheduleContext *rc;
+
+ /**
+ * Task run on timeout.
+ */
+ struct GNUNET_SCHEDULER_Task *timeout_task;
+
+ /**
+ * Instruction pointer. Tells #interpreter_run() which
+ * instruction to run next.
+ */
+ unsigned int ip;
+
+ /**
+ * Result of the testcases, #GNUNET_OK on success
+ */
+ int result;
+
+ /**
+ * Pipe used to communicate child death via signal.
+ */
+ struct GNUNET_DISK_PipeHandle *sigpipe;
+
+};
+
+
+/**
+ * Lookup command by label.
+ *
+ * @param is interpreter state to search
+ * @param label label to look for
+ * @return NULL if command was not found
+ */
+const struct TALER_TESTING_Command *
+TALER_TESTING_interpreter_lookup_command (struct TALER_TESTING_Interpreter *is,
+ const char *label)
+{
+ const struct TALER_TESTING_Command *cmd;
+
+ if (NULL == label)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Attempt to lookup command for empty label\n");
+ return NULL;
+ }
+ for (unsigned int i=0;NULL != (cmd = &is->commands[i])->label;i++)
+ if ( (NULL != cmd->label) &&
+ (0 == strcmp (cmd->label,
+ label)) )
+ return cmd;
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Command not found: %s\n",
+ label);
+ return NULL;
+
+}
+
+
+/**
+ * Obtain main execution context for the main loop.
+ */
+struct GNUNET_CURL_Context *
+TALER_TESTING_interpreter_get_context (struct TALER_TESTING_Interpreter *i)
+{
+ return i->ctx;
+}
+
+
+/**
+ * Run the main interpreter loop that performs exchange operations.
+ *
+ * @param cls contains the `struct InterpreterState`
+ */
+static void
+interpreter_run (void *cls);
+
+
+/**
+ * Current command is done, run the next one.
+ */
+void
+TALER_TESTING_interpreter_next (struct TALER_TESTING_Interpreter *i)
+{
+ if (GNUNET_SYSERR == i->result)
+ return; /* ignore, we already failed! */
+ i->ip++;
+ i->task = GNUNET_SCHEDULER_add_now (&interpreter_run,
+ i);
+}
+
+
+/**
+ * Current command failed, clean up and fail the test case.
+ */
+void
+TALER_TESTING_interpreter_fail (struct TALER_TESTING_Interpreter *i)
+{
+ i->result = GNUNET_SYSERR;
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Create command array terminator.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_end (void)
+{
+ static struct TALER_TESTING_Command cmd;
+
+ return cmd;
+}
+
+
+/**
+ * Run the main interpreter loop that performs exchange operations.
+ *
+ * @param cls contains the `struct TALER_TESTING_Interpreter`
+ */
+static void
+interpreter_run (void *cls)
+{
+ struct TALER_TESTING_Interpreter *is = cls;
+ struct TALER_TESTING_Command *cmd = &is->commands[is->ip];
+
+ is->task = NULL;
+
+ if (NULL == cmd->label)
+ {
+ is->result = GNUNET_OK;
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Running command `%s'\n",
+ cmd->label);
+ cmd->run (cmd->cls,
+ cmd,
+ is);
+}
+
+
+/**
+ * Function run when the test terminates (good or bad).
+ * Cleans up our state.
+ *
+ * @param cls the interpreter state.
+ */
+static void
+do_shutdown (void *cls)
+{
+ struct TALER_TESTING_Interpreter *is = cls;
+ struct TALER_TESTING_Command *cmd;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Executing shutdown at `%s'\n",
+ is->commands[is->ip].label);
+ for (unsigned int j=0;NULL != (cmd = &is->commands[j])->label;j++)
+ cmd->cleanup (cmd->cls,
+ cmd);
+ if (NULL != is->task)
+ {
+ GNUNET_SCHEDULER_cancel (is->task);
+ is->task = NULL;
+ }
+ if (NULL != is->ctx)
+ {
+ GNUNET_CURL_fini (is->ctx);
+ is->ctx = NULL;
+ }
+ if (NULL != is->rc)
+ {
+ GNUNET_CURL_gnunet_rc_destroy (is->rc);
+ is->rc = NULL;
+ }
+ if (NULL != is->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (is->timeout_task);
+ is->timeout_task = NULL;
+ }
+ GNUNET_free_non_null (is->commands);
+}
+
+
+/**
+ * Function run when the test terminates (good or bad) with timeout.
+ *
+ * @param cls NULL
+ */
+static void
+do_timeout (void *cls)
+{
+ struct TALER_TESTING_Interpreter *is = cls;
+
+ is->timeout_task = NULL;
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+void
+TALER_TESTING_run (struct TALER_TESTING_Interpreter *is,
+ struct TALER_TESTING_Command *commands)
+{
+ unsigned int i;
+
+ for (i=0;NULL != commands[i].label;i++) ;
+ is->commands = GNUNET_new_array (i + 1,
+ struct TALER_TESTING_Command);
+ memcpy (is->commands,
+ commands,
+ sizeof (struct TALER_TESTING_Command) * i);
+ is->timeout_task
+ = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_SECONDS, 300),
+ &do_timeout,
+ is);
+ GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
+ is);
+ is->task = GNUNET_SCHEDULER_add_now (&interpreter_run,
+ is);
+}
+
+
+struct MainContext
+{
+ TALER_TESTING_Main main_cb;
+
+ void *main_cb_cls;
+
+ struct TALER_TESTING_Interpreter *is;
+
+};
+
+
+static void
+main_wrapper (void *cls)
+{
+ struct MainContext *main_ctx = cls;
+ struct TALER_TESTING_Interpreter *is = main_ctx->is;
+
+ is->ctx = GNUNET_CURL_init (&GNUNET_CURL_gnunet_scheduler_reschedule,
+ &is->rc);
+ GNUNET_assert (NULL != is->ctx);
+ is->rc = GNUNET_CURL_gnunet_rc_create (is->ctx);
+ main_ctx->main_cb (main_ctx->main_cb_cls,
+ main_ctx->is);
+}
+
+
+/**
+ * Initialize scheduler loop and curl context for the testcase.
+ */
+int
+TALER_TESTING_setup (TALER_TESTING_Main main_cb,
+ void *main_cb_cls)
+{
+ struct TALER_TESTING_Interpreter is;
+ struct MainContext main_ctx = {
+ .main_cb = main_cb,
+ .main_cb_cls = main_cb_cls,
+ .is = &is
+ };
+
+ memset (&is,
+ 0,
+ sizeof (is));
+ GNUNET_SCHEDULER_run (&main_wrapper,
+ &main_ctx);
+ return is.result;
+}
+
+
+/* end of testing_api_loop.c */
diff --git a/src/exchange-lib/testing_api_trait_coin_priv.c
b/src/exchange-lib/testing_api_trait_coin_priv.c
new file mode 100644
index 0000000..0c10ee2
--- /dev/null
+++ b/src/exchange-lib/testing_api_trait_coin_priv.c
@@ -0,0 +1,67 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_traits.c
+ * @brief main interpreter loop for testcases
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+#define TALER_TESTING_TRAIT_COIN_PRIVATE_KEY "coin-private-key"
+
+
+/**
+ * Obtain a coin private key from a @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on offer
+ * @param coin_priv[out] set to the private key of the coin
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_coin_priv (const struct TALER_TESTING_Command *cmd,
+ const char *selector,
+ struct TALER_CoinSpendPrivateKeyP
**coin_priv)
+{
+ return cmd->traits (cmd->cls,
+ (void **) coin_priv,
+ TALER_TESTING_TRAIT_COIN_PRIVATE_KEY,
+ selector);
+}
+
+
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_coin_priv (const char *selector,
+ const struct TALER_CoinSpendPrivateKeyP
*coin_priv)
+{
+ struct TALER_TESTING_Trait ret = {
+ .selector = selector,
+ .trait_name = TALER_TESTING_TRAIT_COIN_PRIVATE_KEY,
+ .ptr = (const void *) coin_priv
+ };
+
+ return ret;
+}
+
+
+/* end of testing_api_trait_coin_priv.c */
diff --git a/src/exchange-lib/testing_api_trait_reserve_priv.c
b/src/exchange-lib/testing_api_trait_reserve_priv.c
new file mode 100644
index 0000000..a849f76
--- /dev/null
+++ b/src/exchange-lib/testing_api_trait_reserve_priv.c
@@ -0,0 +1,65 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_trait_reserve_priv.c
+ * @brief implements reserve private key trait
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+#define TALER_TESTING_TRAIT_RESERVE_PRIVATE_KEY "reserve-private-key"
+
+/**
+ * Obtain a reserve private key from a @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on offer
+ * @param reserve_priv[out] set to the private key of the reserve
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_reserve_priv (const struct TALER_TESTING_Command *cmd,
+ const char *selector,
+ struct TALER_ReservePrivateKeyP
**reserve_priv)
+{
+ return cmd->traits (cmd->cls,
+ (void **) reserve_priv,
+ TALER_TESTING_TRAIT_RESERVE_PRIVATE_KEY,
+ selector);
+}
+
+
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_reserve_priv (const char *selector,
+ const struct TALER_ReservePrivateKeyP
*reserve_priv)
+{
+ struct TALER_TESTING_Trait ret = {
+ .selector = selector,
+ .trait_name = TALER_TESTING_TRAIT_RESERVE_PRIVATE_KEY,
+ .ptr = (const void *) reserve_priv
+ };
+ return ret;
+}
+
+
+/* end of testing_api_trait_reserve_priv.c */
diff --git a/src/exchange-lib/testing_api_traits.c
b/src/exchange-lib/testing_api_traits.c
new file mode 100644
index 0000000..3983d32
--- /dev/null
+++ b/src/exchange-lib/testing_api_traits.c
@@ -0,0 +1,70 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/testing_api_traits.c
+ * @brief loop for trait resolution
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+
+struct TALER_TESTING_Trait
+TALER_TESTING_trait_end ()
+{
+ struct TALER_TESTING_Trait end = {
+ .selector = NULL,
+ .trait_name = NULL,
+ .ptr = NULL
+ };
+
+ return end;
+}
+
+
+int
+TALER_TESTING_get_trait (const struct TALER_TESTING_Trait *traits,
+ void **ret,
+ const char *trait,
+ const char *selector)
+{
+ for (unsigned int i=0;
+ NULL != traits[i].trait_name;
+ i++)
+ {
+ if ( (0 == strcmp (trait,
+ traits[i].trait_name)) &&
+ ( (NULL == selector) ||
+ (0 == strcasecmp (selector,
+ traits[i].selector) ) ) )
+ {
+ *ret = (void *) traits[i].ptr;
+ return GNUNET_OK;
+ }
+ }
+ /* FIXME: log */
+ return GNUNET_SYSERR;
+}
+
+
+
+/* end of testing_api_traits.c */
diff --git a/src/include/Makefile.am b/src/include/Makefile.am
index 7a8f6e0..6583ad5 100644
--- a/src/include/Makefile.am
+++ b/src/include/Makefile.am
@@ -23,6 +23,7 @@ talerinclude_HEADERS = \
taler_exchangedb_plugin.h \
taler_fakebank_lib.h \
taler_json_lib.h \
+ taler_testing_lib.h \
taler_util.h \
taler_pq_lib.h \
taler_signatures.h \
diff --git a/src/include/taler_testing_lib.h b/src/include/taler_testing_lib.h
new file mode 100644
index 0000000..b998bf3
--- /dev/null
+++ b/src/include/taler_testing_lib.h
@@ -0,0 +1,262 @@
+/*
+ This file is part of TALER
+ (C) 2018 Taler Systems SA
+
+ TALER 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, or (at your option) any later version.
+
+ TALER 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
+ TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file include/taler_testing_lib.h
+ * @brief API for writing an interpreter to test Taler components
+ * @author Christian Grothoff <address@hidden>
+ * @author Marcello Stanisci
+ */
+#ifndef TALER_TESTING_LIB_H
+#define TALER_TESTING_LIB_H
+
+#include "taler_util.h"
+#include <gnunet/gnunet_json_lib.h>
+#include "taler_json_lib.h"
+#include <microhttpd.h>
+
+/* ******************* Generic interpreter logic ****************** */
+
+/**
+ * Global state of the interpreter, used by a command
+ * to access information about other commands.
+ */
+struct TALER_TESTING_Interpreter;
+
+
+/**
+ * A command to be run by the interpreter.
+ */
+struct TALER_TESTING_Command
+{
+
+ /**
+ * Closure for all commands with command-specific context
+ * information.
+ */
+ void *cls;
+
+ /**
+ * Label for the command.
+ */
+ const char *label;
+
+ /**
+ * Runs the command. Note that upon return, the interpreter
+ * will not automatically run the next command, as the command
+ * may continue asynchronously in other scheduler tasks. Thus,
+ * the command must ensure to eventually call
+ * #TALER_TESTING_interpreter_next() or
+ * #TALER_TESTING_interpreter_fail().
+ *
+ * @param i interpreter state
+ */
+ void
+ (*run)(void *cls,
+ const struct TALER_TESTING_Command *cmd,
+ struct TALER_TESTING_Interpreter *i);
+
+
+ /**
+ * Clean up after the command. Run during forced termination
+ * (CTRL-C) or test failure or test success.
+ *
+ * @param cls closure
+ */
+ void
+ (*cleanup)(void *cls,
+ const struct TALER_TESTING_Command *cmd);
+
+ /**
+ * Extract information from a command that is useful for other
+ * commands.
+ *
+ * @param cls closure
+ * @param ret[out] result (could be anything)
+ * @param trait name of the trait
+ * @param selector more detailed information about which object
+ * to return in case there were multiple generated
+ * by the command
+ * @return #GNUNET_OK on success
+ */
+ int
+ (*traits)(void *cls,
+ void **ret,
+ const char *trait,
+ const char *selector);
+
+};
+
+
+/**
+ * Lookup command by label.
+ */
+const struct TALER_TESTING_Command *
+TALER_TESTING_interpreter_lookup_command (struct TALER_TESTING_Interpreter *i,
+ const char *label);
+
+
+/**
+ * Obtain main execution context for the main loop.
+ */
+struct GNUNET_CURL_Context *
+TALER_TESTING_interpreter_get_context (struct TALER_TESTING_Interpreter *is);
+
+
+/**
+ * Current command is done, run the next one.
+ */
+void
+TALER_TESTING_interpreter_next (struct TALER_TESTING_Interpreter *is);
+
+/**
+ * Current command failed, clean up and fail the test case.
+ */
+void
+TALER_TESTING_interpreter_fail (struct TALER_TESTING_Interpreter *is);
+
+/**
+ * Create command array terminator.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_end (void);
+
+
+void
+TALER_TESTING_run (struct TALER_TESTING_Interpreter *is,
+ struct TALER_TESTING_Command *commands);
+
+
+typedef void
+(*TALER_TESTING_Main)(void *cls,
+ struct TALER_TESTING_Interpreter *is);
+
+
+/**
+ * Initialize scheduler loop and curl context for the testcase.
+ */
+int
+TALER_TESTING_setup (TALER_TESTING_Main main_cb,
+ void *main_cb_cls);
+
+
+
+
+/* ****************** Specific interpreter commands **************** */
+
+/**
+ * Perform a wire transfer (formerly Admin-add-incoming)
+ *
+ * @return NULL on failure
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_fakebank_transfer (const char *label,
+ const char *amount,
+ uint64_t debit_account_no,
+ uint64_t credit_account_no,
+ const char *auth_username,
+ const char *auth_password);
+
+
+/**
+ * Create withdraw command.
+ *
+ * @return NULL on failure
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_withdraw_amount (const char *label,
+ struct TALER_EXCHANGE_Handle *exchange,
+ const char *reserve_reference,
+ const char *amount,
+ unsigned int expected_response_code);
+
+
+
+
+/* ********************** Generic trait logic for implementing traits
******************* */
+
+/**
+ * A trait.
+ */
+struct TALER_TESTING_Trait
+{
+ const char *selector;
+
+ const char *trait_name;
+
+ const void *ptr;
+};
+
+
+
+struct TALER_TESTING_Trait
+TALER_TESTING_trait_end (void);
+
+
+int
+TALER_TESTING_get_trait (const struct TALER_TESTING_Trait *traits,
+ void **ret,
+ const char *trait,
+ const char *selector);
+
+
+/* ****************** Specific traits supported by this component
*************** */
+
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_reserve_priv (const char *selector,
+ const struct TALER_ReservePrivateKeyP
*reserve_priv);
+
+
+/**
+ * Obtain a reserve private key from a @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on offer
+ * @param reserve_priv[out] set to the private key of the reserve
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_reserve_priv (const struct TALER_TESTING_Command *cmd,
+ const char *selector,
+ struct TALER_ReservePrivateKeyP
**reserve_priv);
+
+
+/**
+ * @param selector
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_coin_priv (const char *selector,
+ const struct TALER_CoinSpendPrivateKeyP
*coin_priv);
+
+
+/**
+ * Obtain a coin private key from a @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on offer
+ * @param coin_priv[out] set to the private key of the coin
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_coin_priv (const struct TALER_TESTING_Command *cmd,
+ const char *selector,
+ struct TALER_CoinSpendPrivateKeyP
**coin_priv);
+
+
+
+
+
+#endif
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