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Added tests verifying that temporaries are accepted by ReturnRef

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Issue no 2527
This commit is contained in:
Piotr Nycz
2019-10-22 18:41:35 +02:00
parent b11fb80e9e
commit 19a3bbce51
1 changed files with 24 additions and 0 deletions
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24
googlemock/test/gmock-actions_test.cc
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@@ -646,6 +646,30 @@ TEST(ReturnRefTest, IsCovariant) {
EXPECT_EQ(&derived, &a.Perform(std::make_tuple())); EXPECT_EQ(&derived, &a.Perform(std::make_tuple()));
} }
namespace
{
template <typename T, typename = decltype(ReturnRef(std::declval<T&&>()))>
bool CanCallReturnRef(T&&) { return true; }
bool CanCallReturnRef(Unused) { return false; }
}
// Tests that ReturnRef(v) is not working with temporaries (T&&)
TEST(ReturnRefTest, WillNotAcceptTemporaryAkaRValueRef) {
int value = 13;
EXPECT_TRUE(CanCallReturnRef(value));
EXPECT_FALSE(CanCallReturnRef(std::move(value)));
EXPECT_FALSE(CanCallReturnRef(value + 1));
EXPECT_FALSE(CanCallReturnRef(123));
}
// Tests that ReturnRef(v) is not working with const temporaries (const T&&)
TEST(ReturnRefTest, WillNotAcceptConstTemporaryAkaContRValueRef) {
const int value = 42;
EXPECT_TRUE(CanCallReturnRef(value));
EXPECT_FALSE(CanCallReturnRef(std::move(value)));
}
// Tests that ReturnRefOfCopy(v) works for reference types. // Tests that ReturnRefOfCopy(v) works for reference types.
TEST(ReturnRefOfCopyTest, WorksForReference) { TEST(ReturnRefOfCopyTest, WorksForReference) {
int n = 42; int n = 42;