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[qemu-s390x] [PATCH 07/18] Acceptance tests: look for target architectur

From: Cleber Rosa
Subject: [qemu-s390x] [PATCH 07/18] Acceptance tests: look for target architecture in test tags first
Date: Thu, 17 Jan 2019 13:56:17 -0500

A test can, optionally, be tagged for one or many architectures.  If a
test has been tagged for a single architecture, there's a high chance
that the test won't run on other architectures.  This changes the
default order of choosing a default target architecture to use based
on the 'arch' tag value first.

The precedence order is for choosing a QEMU binary to use for a test
is now:

 * qemu_bin parameter
 * arch parameter
 * arch tag value (for example, x86_64 if ":avocado: tags=arch:x86_64
   is used)

This means that if one runs:

 $ avocado run -p qemu_bin=/usr/bin/qemu-system-x86_64 test.py

No arch parameter or tag will influence the selection of the QEMU
target binary.  If one runs:

 $ avocado run -p arch=ppc64 test.py

The target binary selection mechanism will attempt to find a binary
such as "ppc64-softmmu/qemu-system-ppc64".  And finally, if one runs
a test that is tagged (in its docstring) with "arch:aarch64":

 $ avocado run aarch64.py

The target binary selection mechanism will attempt to find a binary
such as "aarch64-softmmu/qemu-system-aarch64".

At this time, no provision is made to cancel the execution of tests if
the arch parameter given (manually) does not match the test "arch"
tag, but it may be a useful default behavior to be added in the

Signed-off-by: Cleber Rosa <address@hidden>
 tests/acceptance/avocado_qemu/__init__.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tests/acceptance/avocado_qemu/__init__.py 
index 7a38851753..ddbdb7b926 100644
--- a/tests/acceptance/avocado_qemu/__init__.py
+++ b/tests/acceptance/avocado_qemu/__init__.py
@@ -53,7 +53,12 @@ def pick_default_qemu_bin(arch=None):
 class Test(avocado.Test):
     def setUp(self):
         self.vm = None
-        self.arch = self.params.get('arch')
+        arches = self.tags.get('arch', [])
+        if len(arches) == 1:
+            arch = arches.pop()
+        else:
+            arch = None
+        self.arch = self.params.get('arch', default=arch)
         self.qemu_bin = self.params.get('qemu_bin',
         if self.qemu_bin is None:

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