diff options
Diffstat (limited to 'absl/hash/hash_test.cc')
-rw-r--r-- | absl/hash/hash_test.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/absl/hash/hash_test.cc b/absl/hash/hash_test.cc index b38d46d4..39ba24a8 100644 --- a/absl/hash/hash_test.cc +++ b/absl/hash/hash_test.cc @@ -581,6 +581,24 @@ TEST(HashValueTest, Maps) { MM{{1, "foo"}, {1, "foo"}, {43, "bar"}}, MM{{1, "foo"}, {43, "baz"}}))); } +TEST(HashValueTest, ReferenceWrapper) { + EXPECT_TRUE(is_hashable<std::reference_wrapper<Private>>::value); + + Private p1{1}, p10{10}; + EXPECT_TRUE(absl::VerifyTypeImplementsAbslHashCorrectly(std::make_tuple( + p1, p10, std::ref(p1), std::ref(p10), std::cref(p1), std::cref(p10)))); + + EXPECT_TRUE(is_hashable<std::reference_wrapper<int>>::value); + int one = 1, ten = 10; + EXPECT_TRUE(absl::VerifyTypeImplementsAbslHashCorrectly(std::make_tuple( + one, ten, std::ref(one), std::ref(ten), std::cref(one), std::cref(ten)))); + + EXPECT_TRUE(absl::VerifyTypeImplementsAbslHashCorrectly( + std::make_tuple(std::tuple<std::reference_wrapper<int>>(std::ref(one)), + std::tuple<std::reference_wrapper<int>>(std::ref(ten)), + std::tuple<int>(one), std::tuple<int>(ten)))); +} + template <typename T, typename = void> struct IsHashCallable : std::false_type {}; |