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support printing std::reference_wrapper<T> in gUnit

PiperOrigin-RevId: 213270392
This commit is contained in:
Abseil Team 2018-09-17 10:42:55 -04:00 committed by gennadiycivil
parent 9ea0172850
commit 1b20bd176f
4 changed files with 45 additions and 78 deletions
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8
googletest/include/gtest/gtest-printers.h
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@ -639,7 +639,15 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
#endif // GTEST_HAS_ABSL
#if GTEST_LANG_CXX11
inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
template <typename T>
void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
// Delegate to wrapped value.
PrintTo(ref.get(), os);
}
#endif // GTEST_LANG_CXX11
#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_

56
googletest/include/gtest/internal/gtest-internal.h
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@ -1189,19 +1189,6 @@ class NativeArray {
GTEST_DISALLOW_ASSIGN_(NativeArray);
};
class AdditionalMessage
{
public:
AdditionalMessage(const char* message) : value(message) {}
void set(const std::string& message) { value = message; }
operator bool() const { return true; }
const std::string& get() const { return value; }
private:
std::string value;
};
} // namespace internal
} // namespace testing
@ -1229,56 +1216,43 @@ private:
#define GTEST_TEST_THROW_(statement, expected_exception, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (::testing::internal::AdditionalMessage message = "") { \
if (::testing::internal::ConstCharPtr gtest_msg = "") { \
bool gtest_caught_expected = false; \
try { \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (expected_exception const&) { \
gtest_caught_expected = true; \
throw; \
} \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (const std::exception& e) { \
if (!gtest_caught_expected) { \
message.set("it throws a different type " \
"with message: " + std::string(e.what())); \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
catch (expected_exception const&) { \
gtest_caught_expected = true; \
} \
catch (...) { \
if (!gtest_caught_expected) { \
message.set("it throws a different type."); \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
gtest_msg.value = \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws a different type."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
if (!gtest_caught_expected) { \
message.set("it throws nothing."); \
gtest_msg.value = \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws nothing."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
fail(("Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: " + message.get()).c_str())
fail(gtest_msg.value)
#define GTEST_TEST_NO_THROW_(statement, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (::testing::internal::AdditionalMessage message = ".") { \
if (::testing::internal::AlwaysTrue()) { \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (const std::exception& e) { \
message.set(std::string(": ") + e.what()); \
goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
} \
catch (...) { \
goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
fail(("Expected: " #statement " doesn't throw an exception.\n" \
" Actual: it throws" + message.get()).c_str())
fail("Expected: " #statement " doesn't throw an exception.\n" \
" Actual: it throws.")
#define GTEST_TEST_ANY_THROW_(statement, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \

16
googletest/test/googletest-printers-test.cc
View File

@ -1112,9 +1112,25 @@ TEST(PrintStdTupleTest, NestedTuple) {
#endif // GTEST_LANG_CXX11
#if GTEST_LANG_CXX11
TEST(PrintNullptrT, Basic) {
EXPECT_EQ("(nullptr)", Print(nullptr));
}
TEST(PrintReferenceWrapper, Printable) {
int x = 5;
EXPECT_EQ("5", Print(std::ref(x)));
EXPECT_EQ("5", Print(std::cref(x)));
}
TEST(PrintReferenceWrapper, Unprintable) {
::foo::UnprintableInFoo up;
EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
Print(std::ref(up)));
EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
Print(std::cref(up)));
}
#endif // GTEST_LANG_CXX11
// Tests printing user-defined unprintable types.

43
googletest/test/gtest_unittest.cc
View File

@ -3328,9 +3328,6 @@ TEST_F(SingleEvaluationTest, OtherCases) {
void ThrowAnInteger() {
throw 1;
}
void ThrowAnException(const char* what) {
throw std::runtime_error(what);
}
// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, ExceptionTests) {
@ -3373,20 +3370,6 @@ TEST_F(SingleEvaluationTest, ExceptionTests) {
// failed EXPECT_ANY_THROW
EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(a_++), "it doesn't");
EXPECT_EQ(7, a_);
// failed EXPECT_THROW std::exception, throws different
EXPECT_NONFATAL_FAILURE(EXPECT_THROW({ // NOLINT
a_++;
ThrowAnInteger();
}, std::exception), "throws a different type");
EXPECT_EQ(8, a_);
// failed EXPECT_THROW, throws std::exception
EXPECT_NONFATAL_FAILURE(EXPECT_THROW({ // NOLINT
a_++;
ThrowAnException("blablubb");
}, bool), "throws a different type with message: blablubb");
EXPECT_EQ(9, a_);
}
#endif // GTEST_HAS_EXCEPTIONS
@ -3819,11 +3802,6 @@ TEST(AssertionTest, ASSERT_THROW) {
ASSERT_THROW(ThrowNothing(), bool),
"Expected: ThrowNothing() throws an exception of type bool.\n"
" Actual: it throws nothing.");
EXPECT_FATAL_FAILURE(
ASSERT_THROW(ThrowAnException("buuh"), bool),
"Expected: ThrowAnException(\"buuh\") throws an exception of type bool.\n"
" Actual: it throws a different type with message: buuh");
}
// Tests ASSERT_NO_THROW.
@ -3832,9 +3810,6 @@ TEST(AssertionTest, ASSERT_NO_THROW) {
EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()),
"Expected: ThrowAnInteger() doesn't throw an exception."
"\n Actual: it throws.");
EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnException("blablubb")),
"Expected: ThrowAnException(\"blablubb\") doesn't throw an exception."
"\n Actual: it throws: blablubb");
}
// Tests ASSERT_ANY_THROW.
@ -4561,16 +4536,13 @@ TEST(ExpectTest, EXPECT_GT) {
// Tests EXPECT_THROW.
TEST(ExpectTest, EXPECT_THROW) {
EXPECT_THROW(ThrowAnInteger(), int);
EXPECT_THROW(ThrowAnException(""), std::exception);
EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnInteger(), bool),
"Expected: ThrowAnInteger() throws an exception of type bool.\n"
" Actual: it throws a different type.");
EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowNothing(), bool),
"Expected: ThrowNothing() throws an exception of type bool.\n"
" Actual: it throws nothing.");
EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnException("buuh"), bool),
"Expected: ThrowAnException(\"buuh\") throws an exception of type bool.\n"
" Actual: it throws a different type with message: buuh");
"Expected: ThrowAnInteger() throws an exception of "
"type bool.\n Actual: it throws a different type.");
EXPECT_NONFATAL_FAILURE(
EXPECT_THROW(ThrowNothing(), bool),
"Expected: ThrowNothing() throws an exception of type bool.\n"
" Actual: it throws nothing.");
}
// Tests EXPECT_NO_THROW.
@ -4579,9 +4551,6 @@ TEST(ExpectTest, EXPECT_NO_THROW) {
EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()),
"Expected: ThrowAnInteger() doesn't throw an "
"exception.\n Actual: it throws.");
EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnException("blablubb")),
"Expected: ThrowAnException(\"blablubb\") doesn't throw an "
"exception.\n Actual: it throws: blablubb");
}
// Tests EXPECT_ANY_THROW.