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28e9d1f267
There are two cases that prompt this behavior: - All test cases in the binary are disabled. - There are more shards defined than test cases, so some shards are empty. The result in each case is the same: the test runner needs to spin up additional processes that do nothing, which is wasteful, especially when tests need expensive resources. PiperOrigin-RevId: 769176856 Change-Id: Ifa399a0b7b68e4add5a94ca148b32b2938a8666d
92 lines
3.6 KiB
Python
92 lines
3.6 KiB
Python
#!/usr/bin/env python3 # pylint: disable=g-interpreter-mismatch
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#
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# Copyright 2025, Google Inc.
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# 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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"""Tests for Google Test's --gtest_fail_if_no_test_selected flag."""
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from googletest.test import gtest_test_utils
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# The command line flag for enabling the fail-if-no-test-selected behavior.
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FAIL_IF_NO_TEST_SELECTED_FLAG = "gtest_fail_if_no_test_selected"
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# The environment variable for the test output warnings file.
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TEST_WARNINGS_OUTPUT_FILE = "TEST_WARNINGS_OUTPUT_FILE"
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class GTestFailIfNoTestSelectedTest(gtest_test_utils.TestCase):
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"""Tests the --gtest_fail_if_no_test_selected flag."""
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def Run(self, program_name, flags=None, env=None):
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"""Run the given program with the given flag.
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Args:
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program_name: Name of the program to run.
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flags: The command line flags to pass to the program, or None.
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env: Dictionary with environment to pass to the subprocess.
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Returns:
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True if the program exits with code 0, false otherwise.
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"""
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exe_path = gtest_test_utils.GetTestExecutablePath(program_name)
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args = [exe_path]
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if flags is not None:
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args.extend(flags)
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process = gtest_test_utils.Subprocess(args, capture_stderr=False, env=env)
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return process.exited and process.exit_code == 0
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def testSucceedsWhenFlagIsNotSetAndOnlyDisabledTestsPresent(self):
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"""Tests that no test selected results in success without the flag set."""
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self.assertTrue(
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self.Run("googletest-fail-if-no-test-linked-test-with-disabled-test_"),
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)
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def testFailsWhenFlagIsSetAndOnlyDisabledTestsPresent(self):
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"""Tests that no test selected results in failure with the flag set."""
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self.assertFalse(
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self.Run(
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"googletest-fail-if-no-test-linked-test-with-disabled-test_",
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flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
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),
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)
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def testSucceedsWhenFlagIsSetAndEnabledTestsPresent(self):
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"""Tests that a test running still succeeds when the flag is set."""
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self.assertTrue(
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self.Run(
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"googletest-fail-if-no-test-linked-test-with-enabled-test_",
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flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
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),
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)
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if __name__ == "__main__":
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gtest_test_utils.Main()
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