diff options
| -rw-r--r-- | googletest/docs/AdvancedGuide.md | 30 | ||||
| -rw-r--r-- | googletest/include/gtest/gtest.h | 16 | ||||
| -rw-r--r-- | googletest/src/gtest.cc | 7 | ||||
| -rw-r--r-- | googletest/test/BUILD.bazel | 7 | ||||
| -rw-r--r-- | googletest/test/gtest_assert_by_exception_test.cc | 119 |
5 files changed, 171 insertions, 8 deletions
diff --git a/googletest/docs/AdvancedGuide.md b/googletest/docs/AdvancedGuide.md index e1df20d..6605f44 100644 --- a/googletest/docs/AdvancedGuide.md +++ b/googletest/docs/AdvancedGuide.md @@ -872,13 +872,33 @@ TEST(FooTest, Bar) { } ``` -Since we don't use exceptions, it is technically impossible to -implement the intended behavior here. To alleviate this, Google Test -provides two solutions. You could use either the -`(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the -`HasFatalFailure()` function. They are described in the following two +To alleviate this, gUnit provides three different solutions. You could use +either exceptions, the `(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the +`HasFatalFailure()` function. They are described in the following two subsections. +#### Asserting on Subroutines with an exception + +The following code can turn ASSERT-failure into an exception: + +```c++ +class ThrowListener : public testing::EmptyTestEventListener { + void OnTestPartResult(const testing::TestPartResult& result) override { + if (result.type() == testing::TestPartResult::kFatalFailure) { + throw testing::AssertionException(result); + } + } +}; +int main(int argc, char** argv) { + ... + testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener); + return RUN_ALL_TESTS(); +} +``` + +This listener should be added after other listeners if you have any, otherwise +they won't see failed `OnTestPartResult`. + ### Asserting on Subroutines ### As shown above, if your test calls a subroutine that has an `ASSERT_*` diff --git a/googletest/include/gtest/gtest.h b/googletest/include/gtest/gtest.h index 01994e6..26e787d 100644 --- a/googletest/include/gtest/gtest.h +++ b/googletest/include/gtest/gtest.h @@ -138,7 +138,7 @@ GTEST_DECLARE_int32_(stack_trace_depth); // When this flag is specified, a failed assertion will throw an // exception if exceptions are enabled, or exit the program with a -// non-zero code otherwise. +// non-zero code otherwise. For use with an external test framework. GTEST_DECLARE_bool_(throw_on_failure); // When this flag is set with a "host:port" string, on supported @@ -1004,6 +1004,18 @@ class Environment { virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; } }; +#if GTEST_HAS_EXCEPTIONS + +// Exception which can be thrown from TestEventListener::OnTestPartResult. +class GTEST_API_ AssertionException + : public internal::GoogleTestFailureException { + public: + explicit AssertionException(const TestPartResult& result) + : GoogleTestFailureException(result) {} +}; + +#endif // GTEST_HAS_EXCEPTIONS + // The interface for tracing execution of tests. The methods are organized in // the order the corresponding events are fired. class TestEventListener { @@ -1032,6 +1044,8 @@ class TestEventListener { virtual void OnTestStart(const TestInfo& test_info) = 0; // Fired after a failed assertion or a SUCCEED() invocation. + // If you want to throw an exception from this function to skip to the next + // TEST, it must be AssertionException defined above, or inherited from it. virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0; // Fired after the test ends. diff --git a/googletest/src/gtest.cc b/googletest/src/gtest.cc index 2c25f83..54e25b2 100644 --- a/googletest/src/gtest.cc +++ b/googletest/src/gtest.cc @@ -293,7 +293,7 @@ GTEST_DEFINE_bool_( internal::BoolFromGTestEnv("throw_on_failure", false), "When this flag is specified, a failed assertion will throw an exception " "if exceptions are enabled or exit the program with a non-zero code " - "otherwise."); + "otherwise. For use with an external test framework."); #if GTEST_USE_OWN_FLAGFILE_FLAG_ GTEST_DEFINE_string_( @@ -2435,6 +2435,8 @@ Result HandleExceptionsInMethodIfSupported( #if GTEST_HAS_EXCEPTIONS try { return HandleSehExceptionsInMethodIfSupported(object, method, location); + } catch (const AssertionException&) { // NOLINT + // This failure was reported already. } catch (const internal::GoogleTestFailureException&) { // NOLINT // This exception type can only be thrown by a failed Google // Test assertion with the intention of letting another testing @@ -5201,7 +5203,8 @@ static const char kColorEncodedHelpMessage[] = " @G--" GTEST_FLAG_PREFIX_ "break_on_failure@D\n" " Turn assertion failures into debugger break-points.\n" " @G--" GTEST_FLAG_PREFIX_ "throw_on_failure@D\n" -" Turn assertion failures into C++ exceptions.\n" +" Turn assertion failures into C++ exceptions for use by an external\n" +" test framework.\n" " @G--" GTEST_FLAG_PREFIX_ "catch_exceptions=0@D\n" " Do not report exceptions as test failures. Instead, allow them\n" " to crash the program or throw a pop-up (on Windows).\n" diff --git a/googletest/test/BUILD.bazel b/googletest/test/BUILD.bazel index 3c700b1..1b81133 100644 --- a/googletest/test/BUILD.bazel +++ b/googletest/test/BUILD.bazel @@ -219,6 +219,13 @@ py_test( deps = [":gtest_test_utils"], ) +cc_test( + name = "gtest_assert_by_exception_test", + size = "small", + srcs = ["gtest_assert_by_exception_test.cc"], + deps = ["//:gtest"], +) + cc_binary( name = "gtest_throw_on_failure_test_", testonly = 1, diff --git a/googletest/test/gtest_assert_by_exception_test.cc b/googletest/test/gtest_assert_by_exception_test.cc new file mode 100644 index 0000000..2f0e34a --- /dev/null +++ b/googletest/test/gtest_assert_by_exception_test.cc @@ -0,0 +1,119 @@ +// Copyright 2009, 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. +// +// Author: wan@google.com (Zhanyong Wan) + +// Tests Google Test's assert-by-exception mode with exceptions enabled. + +#include "gtest/gtest.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdexcept> + +class ThrowListener : public testing::EmptyTestEventListener { + void OnTestPartResult(const testing::TestPartResult& result) override { + if (result.type() == testing::TestPartResult::kFatalFailure) { + throw testing::AssertionException(result); + } + } +}; + +// Prints the given failure message and exits the program with +// non-zero. We use this instead of a Google Test assertion to +// indicate a failure, as the latter is been tested and cannot be +// relied on. +void Fail(const char* msg) { + printf("FAILURE: %s\n", msg); + fflush(stdout); + exit(1); +} + +static void AssertFalse() { + ASSERT_EQ(2, 3) << "Expected failure"; +} + +// Tests that an assertion failure throws a subclass of +// std::runtime_error. +TEST(Test, Test) { + // A successful assertion shouldn't throw. + try { + EXPECT_EQ(3, 3); + } catch(...) { + Fail("A successful assertion wrongfully threw."); + } + + // A successful assertion shouldn't throw. + try { + EXPECT_EQ(3, 4); + } catch(...) { + Fail("A failed non-fatal assertion wrongfully threw."); + } + + // A failed assertion should throw. + try { + AssertFalse(); + } catch(const testing::AssertionException& e) { + if (strstr(e.what(), "Expected failure") != NULL) + throw; + + printf("%s", + "A failed assertion did throw an exception of the right type, " + "but the message is incorrect. Instead of containing \"Expected " + "failure\", it is:\n"); + Fail(e.what()); + } catch(...) { + Fail("A failed assertion threw the wrong type of exception."); + } + Fail("A failed assertion should've thrown but didn't."); +} + +int kTestForContinuingTest = 0; + +TEST(Test, Test2) { + // FIXME(sokolov): how to force Test2 to be after Test? + kTestForContinuingTest = 1; +} + +int main(int argc, char** argv) { + testing::InitGoogleTest(&argc, argv); + testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener); + + int result = RUN_ALL_TESTS(); + if (result == 0) { + printf("RUN_ALL_TESTS returned %d\n", result); + Fail("Expected failure instead."); + } + + if (kTestForContinuingTest == 0) { + Fail("Should have continued with other tests, but did not."); + } + return 0; +} |