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#!/usr/bin/env python3 # pylint: disable=g-interpreter-mismatch
#
# Copyright 2025, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Tests for Google Test's --gtest_fail_if_no_test_selected flag."""
from googletest.test import gtest_test_utils
# The command line flag for enabling the fail-if-no-test-selected behavior.
FAIL_IF_NO_TEST_SELECTED_FLAG = "gtest_fail_if_no_test_selected"
# The environment variable for the test output warnings file.
TEST_WARNINGS_OUTPUT_FILE = "TEST_WARNINGS_OUTPUT_FILE"
class GTestFailIfNoTestSelectedTest(gtest_test_utils.TestCase):
"""Tests the --gtest_fail_if_no_test_selected flag."""
def Run(self, program_name, flags=None, env=None):
"""Run the given program with the given flag.
Args:
program_name: Name of the program to run.
flags: The command line flags to pass to the program, or None.
env: Dictionary with environment to pass to the subprocess.
Returns:
True if the program exits with code 0, false otherwise.
"""
exe_path = gtest_test_utils.GetTestExecutablePath(program_name)
args = [exe_path]
if flags is not None:
args.extend(flags)
process = gtest_test_utils.Subprocess(args, capture_stderr=False, env=env)
return process.exited and process.exit_code == 0
def testSucceedsWhenFlagIsNotSetAndOnlyDisabledTestsPresent(self):
"""Tests that no test selected results in success without the flag set."""
self.assertTrue(
self.Run("googletest-fail-if-no-test-linked-test-with-disabled-test_"),
)
def testFailsWhenFlagIsSetAndOnlyDisabledTestsPresent(self):
"""Tests that no test selected results in failure with the flag set."""
self.assertFalse(
self.Run(
"googletest-fail-if-no-test-linked-test-with-disabled-test_",
flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
),
)
def testSucceedsWhenFlagIsSetAndEnabledTestsPresent(self):
"""Tests that a test running still succeeds when the flag is set."""
self.assertTrue(
self.Run(
"googletest-fail-if-no-test-linked-test-with-enabled-test_",
flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
),
)
if __name__ == "__main__":
gtest_test_utils.Main()
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