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- /*
- * Copyright 2017-present Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #include <folly/container/Access.h>
- #include <array>
- #include <initializer_list>
- #include <vector>
- #include <folly/portability/GTest.h>
- class AccessTest : public testing::Test {};
- TEST_F(AccessTest, size_vector) {
- EXPECT_EQ(3, folly::size(std::vector<int>{1, 2, 3}));
- }
- TEST_F(AccessTest, size_array) {
- constexpr auto const a = std::array<int, 3>{{1, 2, 3}};
- constexpr auto const size = folly::size(a);
- EXPECT_EQ(3, size);
- }
- TEST_F(AccessTest, size_carray) {
- constexpr int const a[3] = {1, 2, 3};
- constexpr auto const size = folly::size(a);
- EXPECT_EQ(3, size);
- }
- TEST_F(AccessTest, size_initializer_list) {
- EXPECT_EQ(3, folly::size({1, 2, 3}));
- EXPECT_EQ(3, folly::size(std::initializer_list<int>{1, 2, 3}));
- }
- TEST_F(AccessTest, empty_vector) {
- EXPECT_FALSE(folly::empty(std::vector<int>{1, 2, 3}));
- EXPECT_TRUE(folly::empty(std::vector<int>{}));
- }
- TEST_F(AccessTest, empty_array) {
- {
- constexpr auto const a = std::array<int, 3>{{1, 2, 3}};
- constexpr auto const empty = folly::empty(a);
- EXPECT_FALSE(empty);
- }
- {
- constexpr auto const a = std::array<int, 0>{{}};
- constexpr auto const empty = folly::empty(a);
- EXPECT_TRUE(empty);
- }
- }
- TEST_F(AccessTest, empty_carray) {
- constexpr int const a[3] = {1, 2, 3};
- constexpr auto const empty = folly::empty(a);
- EXPECT_FALSE(empty);
- // zero-length arrays are not allowed in the language
- }
- TEST_F(AccessTest, empty_initializer_list) {
- EXPECT_FALSE(folly::empty({1, 2, 3}));
- EXPECT_FALSE(folly::empty(std::initializer_list<int>{1, 2, 3}));
- EXPECT_TRUE(folly::empty(std::initializer_list<int>{}));
- }
- TEST_F(AccessTest, data_vector) {
- EXPECT_EQ(1, *folly::data(std::vector<int>{1, 2, 3}));
- auto v = std::vector<int>{1, 2, 3};
- *folly::data(v) = 4;
- EXPECT_EQ(4, v[0]);
- }
- TEST_F(AccessTest, data_array) {
- constexpr auto const a = std::array<int, 3>{{1, 2, 3}};
- auto const data = folly::data(a); // not constexpr until C++17
- EXPECT_EQ(1, *data);
- }
- TEST_F(AccessTest, data_carray) {
- constexpr int const a[3] = {1, 2, 3};
- auto const data = folly::data(a); // not constexpr until C++17
- EXPECT_EQ(1, *data);
- }
- TEST_F(AccessTest, data_initializer_list) {
- EXPECT_EQ(1, *folly::data({1, 2, 3}));
- EXPECT_EQ(1, *folly::data(std::initializer_list<int>{1, 2, 3}));
- }
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