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f45d5865ed
So that global test environments are by default set up and torn down once, regardless of the value of the repeat flag. The point of global environments is to be set up and torn down once, and shared by all tests in the process. There is no obvious reason why multiple runs of the same test should be treated distinctly from single runs of different tests. Having this be false by default means that repeats using a global environment run faster. It can still be set to true if it's desired that every repeat get a fresh environment, but this seems less important given the nature of a global environment. Every test I've seen using a global environment uses it to set up some expensive external resource, not something that can/should be set up for each test anew. (Again this is unsurprising, since the environment is a global.) PiperOrigin-RevId: 424003937 Change-Id: I9e8a825cb8900960dd65b85fe5ffcc0a337e57f3
131 lines
5.1 KiB
Python
131 lines
5.1 KiB
Python
# Copyright 2021 Google Inc. All Rights Reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Unit test for Google Test's global test environment behavior.
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A user can specify a global test environment via
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testing::AddGlobalTestEnvironment. Failures in the global environment should
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result in all unit tests being skipped.
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This script tests such functionality by invoking
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googletest-global-environment-unittest_ (a program written with Google Test).
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"""
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import re
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from googletest.test import gtest_test_utils
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def RunAndReturnOutput(args=None):
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"""Runs the test program and returns its output."""
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return gtest_test_utils.Subprocess([
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gtest_test_utils.GetTestExecutablePath(
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'googletest-global-environment-unittest_')
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] + (args or [])).output
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class GTestGlobalEnvironmentUnitTest(gtest_test_utils.TestCase):
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"""Tests global test environment failures."""
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def testEnvironmentSetUpFails(self):
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"""Tests the behavior of not specifying the fail_fast."""
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# Run the test.
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txt = RunAndReturnOutput()
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# We should see the text of the global environment setup error.
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self.assertIn('Canned environment setup error', txt)
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# Our test should have been skipped due to the error, and not treated as a
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# pass.
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self.assertIn('[ SKIPPED ] 1 test', txt)
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self.assertIn('[ PASSED ] 0 tests', txt)
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# The test case shouldn't have been run.
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self.assertNotIn('Unexpected call', txt)
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def testEnvironmentSetUpAndTornDownForEachRepeat(self):
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"""Tests the behavior of test environments and gtest_repeat."""
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# When --gtest_recreate_environments_when_repeating is true, the global test
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# environment should be set up and torn down for each iteration.
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txt = RunAndReturnOutput([
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'--gtest_repeat=2',
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'--gtest_recreate_environments_when_repeating=true',
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])
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expected_pattern = ('(.|\n)*'
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r'Repeating all tests \(iteration 1\)'
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'(.|\n)*'
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'Global test environment set-up.'
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'(.|\n)*'
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'SomeTest.DoesFoo'
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'(.|\n)*'
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'Global test environment tear-down'
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'(.|\n)*'
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r'Repeating all tests \(iteration 2\)'
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'(.|\n)*'
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'Global test environment set-up.'
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'(.|\n)*'
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'SomeTest.DoesFoo'
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'(.|\n)*'
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'Global test environment tear-down'
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'(.|\n)*')
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self.assertRegex(txt, expected_pattern)
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def testEnvironmentSetUpAndTornDownOnce(self):
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"""Tests environment and --gtest_recreate_environments_when_repeating."""
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# By default the environment should only be set up and torn down once, at
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# the start and end of the test respectively.
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txt = RunAndReturnOutput([
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'--gtest_repeat=2',
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])
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expected_pattern = ('(.|\n)*'
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r'Repeating all tests \(iteration 1\)'
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'(.|\n)*'
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'Global test environment set-up.'
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'(.|\n)*'
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'SomeTest.DoesFoo'
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'(.|\n)*'
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r'Repeating all tests \(iteration 2\)'
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'(.|\n)*'
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'SomeTest.DoesFoo'
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'(.|\n)*'
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'Global test environment tear-down'
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'(.|\n)*')
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self.assertRegex(txt, expected_pattern)
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self.assertEqual(len(re.findall('Global test environment set-up', txt)), 1)
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self.assertEqual(
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len(re.findall('Global test environment tear-down', txt)), 1)
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if __name__ == '__main__':
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gtest_test_utils.Main()
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