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diff --git a/external/gtest/googletest/test/googletest-catch-exceptions-test.py b/external/gtest/googletest/test/googletest-catch-exceptions-test.py
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+#!/usr/bin/env python
+#
+# Copyright 2010 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 Google Test's exception catching behavior.
+
+This script invokes googletest-catch-exceptions-test_ and
+googletest-catch-exceptions-ex-test_ (programs written with
+Google Test) and verifies their output.
+"""
+
+from googletest.test import gtest_test_utils
+
+# Constants.
+FLAG_PREFIX = '--gtest_'
+LIST_TESTS_FLAG = FLAG_PREFIX + 'list_tests'
+NO_CATCH_EXCEPTIONS_FLAG = FLAG_PREFIX + 'catch_exceptions=0'
+FILTER_FLAG = FLAG_PREFIX + 'filter'
+
+# Path to the googletest-catch-exceptions-ex-test_ binary, compiled with
+# exceptions enabled.
+EX_EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-catch-exceptions-ex-test_'
+)
+
+# Path to the googletest-catch-exceptions-test_ binary, compiled with
+# exceptions disabled.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-catch-exceptions-no-ex-test_'
+)
+
+environ = gtest_test_utils.environ
+SetEnvVar = gtest_test_utils.SetEnvVar
+
+# Tests in this file run a Google-Test-based test program and expect it
+# to terminate prematurely.  Therefore they are incompatible with
+# the premature-exit-file protocol by design.  Unset the
+# premature-exit filepath to prevent Google Test from creating
+# the file.
+SetEnvVar(gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR, None)
+
+TEST_LIST = gtest_test_utils.Subprocess(
+    [EXE_PATH, LIST_TESTS_FLAG], env=environ
+).output
+
+SUPPORTS_SEH_EXCEPTIONS = 'ThrowsSehException' in TEST_LIST
+
+if SUPPORTS_SEH_EXCEPTIONS:
+  BINARY_OUTPUT = gtest_test_utils.Subprocess([EXE_PATH], env=environ).output
+
+EX_BINARY_OUTPUT = gtest_test_utils.Subprocess(
+    [EX_EXE_PATH], env=environ
+).output
+
+
+# The tests.
+if SUPPORTS_SEH_EXCEPTIONS:
+
+  class CatchSehExceptionsTest(gtest_test_utils.TestCase):
+    """Tests exception-catching behavior."""
+
+    def TestSehExceptions(self, test_output):
+      self.assertIn(
+          (
+              'SEH exception with code 0x2a thrown '
+              "in the test fixture's constructor"
+          ),
+          test_output,
+      )
+      self.assertIn(
+          (
+              'SEH exception with code 0x2a thrown '
+              "in the test fixture's destructor"
+          ),
+          test_output,
+      )
+      self.assertIn(
+          'SEH exception with code 0x2a thrown in SetUpTestSuite()', test_output
+      )
+      self.assertIn(
+          'SEH exception with code 0x2a thrown in TearDownTestSuite()',
+          test_output,
+      )
+      self.assertIn(
+          'SEH exception with code 0x2a thrown in SetUp()', test_output
+      )
+      self.assertIn(
+          'SEH exception with code 0x2a thrown in TearDown()', test_output
+      )
+      self.assertIn(
+          'SEH exception with code 0x2a thrown in the test body', test_output
+      )
+
+    def testCatchesSehExceptionsWithCxxExceptionsEnabled(self):
+      self.TestSehExceptions(EX_BINARY_OUTPUT)
+
+    def testCatchesSehExceptionsWithCxxExceptionsDisabled(self):
+      self.TestSehExceptions(BINARY_OUTPUT)
+
+
+class CatchCxxExceptionsTest(gtest_test_utils.TestCase):
+  """Tests C++ exception-catching behavior.
+
+  Tests in this test case verify that:
+  * C++ exceptions are caught and logged as C++ (not SEH) exceptions
+  * Exception thrown affect the remainder of the test work flow in the
+    expected manner.
+  """
+
+  def testCatchesCxxExceptionsInFixtureConstructor(self):
+    self.assertTrue(
+        'C++ exception with description '
+        '"Standard C++ exception" thrown '
+        "in the test fixture's constructor"
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'unexpected' not in EX_BINARY_OUTPUT,
+        (
+            'This failure belongs in this test only if '
+            '"CxxExceptionInConstructorTest" (no quotes) '
+            'appears on the same line as words "called unexpectedly"'
+        ),
+    )
+
+  if (
+      'CxxExceptionInDestructorTest.ThrowsExceptionInDestructor'
+      in EX_BINARY_OUTPUT
+  ):
+
+    def testCatchesCxxExceptionsInFixtureDestructor(self):
+      self.assertTrue(
+          'C++ exception with description '
+          '"Standard C++ exception" thrown '
+          "in the test fixture's destructor"
+          in EX_BINARY_OUTPUT,
+          EX_BINARY_OUTPUT,
+      )
+      self.assertTrue(
+          'CxxExceptionInDestructorTest::TearDownTestSuite() '
+          'called as expected.'
+          in EX_BINARY_OUTPUT,
+          EX_BINARY_OUTPUT,
+      )
+
+  def testCatchesCxxExceptionsInSetUpTestCase(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUpTestSuite()'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInConstructorTest::TearDownTestSuite() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertFalse(
+        'CxxExceptionInSetUpTestSuiteTest constructor called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertFalse(
+        'CxxExceptionInSetUpTestSuiteTest destructor called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertFalse(
+        'CxxExceptionInSetUpTestSuiteTest::SetUp() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertFalse(
+        'CxxExceptionInSetUpTestSuiteTest::TearDown() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertFalse(
+        'CxxExceptionInSetUpTestSuiteTest test body called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+
+  def testCatchesCxxExceptionsInTearDownTestCase(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDownTestSuite()'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+
+  def testCatchesCxxExceptionsInSetUp(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUp()'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDownTestSuite() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInSetUpTest destructor called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDown() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'unexpected' not in EX_BINARY_OUTPUT,
+        (
+            'This failure belongs in this test only if '
+            '"CxxExceptionInSetUpTest" (no quotes) '
+            'appears on the same line as words "called unexpectedly"'
+        ),
+    )
+
+  def testCatchesCxxExceptionsInTearDown(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDown()'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInTearDownTest::TearDownTestSuite() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInTearDownTest destructor called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+
+  def testCatchesCxxExceptionsInTestBody(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in the test body'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDownTestSuite() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest destructor called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDown() called as expected.'
+        in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+
+  def testCatchesNonStdCxxExceptions(self):
+    self.assertTrue(
+        'Unknown C++ exception thrown in the test body' in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT,
+    )
+
+  def testUnhandledCxxExceptionsAbortTheProgram(self):
+    # Filters out SEH exception tests on Windows. Unhandled SEH exceptions
+    # cause tests to show pop-up windows there.
+    filter_out_seh_tests_flag = FILTER_FLAG + '=-*Seh*'
+    # By default, Google Test doesn't catch the exceptions.
+    uncaught_exceptions_ex_binary_output = gtest_test_utils.Subprocess(
+        [EX_EXE_PATH, NO_CATCH_EXCEPTIONS_FLAG, filter_out_seh_tests_flag],
+        env=environ,
+    ).output
+
+    self.assertIn(
+        'Unhandled C++ exception terminating the program',
+        uncaught_exceptions_ex_binary_output,
+    )
+    self.assertNotIn('unexpected', uncaught_exceptions_ex_binary_output)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()