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Diffstat (limited to 'third_party/libwebrtc/webrtc/api/array_view_unittest.cc')
| -rw-r--r-- | third_party/libwebrtc/webrtc/api/array_view_unittest.cc | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/third_party/libwebrtc/webrtc/api/array_view_unittest.cc b/third_party/libwebrtc/webrtc/api/array_view_unittest.cc new file mode 100644 index 0000000000..48dff2c266 --- /dev/null +++ b/third_party/libwebrtc/webrtc/api/array_view_unittest.cc @@ -0,0 +1,412 @@ +/* + * Copyright 2015 The WebRTC Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <algorithm> +#include <string> +#include <utility> +#include <vector> + +#include "api/array_view.h" +#include "rtc_base/buffer.h" +#include "rtc_base/checks.h" +#include "rtc_base/gunit.h" +#include "test/gmock.h" + +namespace rtc { + +namespace { + +using ::testing::ElementsAre; +using ::testing::IsEmpty; + +template <typename T> +void Call(ArrayView<T>) {} + +} // namespace + +TEST(ArrayViewTest, TestConstructFromPtrAndArray) { + char arr[] = "Arrr!"; + const char carr[] = "Carrr!"; + Call<const char>(arr); + Call<const char>(carr); + Call<char>(arr); + // Call<char>(carr); // Compile error, because can't drop const. + // Call<int>(arr); // Compile error, because incompatible types. + ArrayView<int*> x; + EXPECT_EQ(0u, x.size()); + EXPECT_EQ(nullptr, x.data()); + ArrayView<char> y = arr; + EXPECT_EQ(6u, y.size()); + EXPECT_EQ(arr, y.data()); + ArrayView<char, 6> yf = arr; + static_assert(yf.size() == 6, ""); + EXPECT_EQ(arr, yf.data()); + ArrayView<const char> z(arr + 1, 3); + EXPECT_EQ(3u, z.size()); + EXPECT_EQ(arr + 1, z.data()); + ArrayView<const char, 3> zf(arr + 1, 3); + static_assert(zf.size() == 3, ""); + EXPECT_EQ(arr + 1, zf.data()); + ArrayView<const char> w(arr, 2); + EXPECT_EQ(2u, w.size()); + EXPECT_EQ(arr, w.data()); + ArrayView<const char, 2> wf(arr, 2); + static_assert(wf.size() == 2, ""); + EXPECT_EQ(arr, wf.data()); + ArrayView<char> q(arr, 0); + EXPECT_EQ(0u, q.size()); + EXPECT_EQ(nullptr, q.data()); + ArrayView<char, 0> qf(arr, 0); + static_assert(qf.size() == 0, ""); + EXPECT_EQ(nullptr, qf.data()); +#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) + // DCHECK error (nullptr with nonzero size). + EXPECT_DEATH(ArrayView<int>(static_cast<int*>(nullptr), 5), ""); +#endif + // These are compile errors, because incompatible types. + // ArrayView<int> m = arr; + // ArrayView<float> n(arr + 2, 2); +} + +TEST(ArrayViewTest, TestCopyConstructorVariable) { + char arr[] = "Arrr!"; + ArrayView<char> x = arr; + EXPECT_EQ(6u, x.size()); + EXPECT_EQ(arr, x.data()); + ArrayView<char> y = x; // Copy non-const -> non-const. + EXPECT_EQ(6u, y.size()); + EXPECT_EQ(arr, y.data()); + ArrayView<const char> z = x; // Copy non-const -> const. + EXPECT_EQ(6u, z.size()); + EXPECT_EQ(arr, z.data()); + ArrayView<const char> w = z; // Copy const -> const. + EXPECT_EQ(6u, w.size()); + EXPECT_EQ(arr, w.data()); + // ArrayView<char> v = z; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestCopyConstructorFixed) { + char arr[] = "Arrr!"; + ArrayView<char, 6> x = arr; + static_assert(x.size() == 6, ""); + EXPECT_EQ(arr, x.data()); + + // Copy fixed -> fixed. + ArrayView<char, 6> y = x; // Copy non-const -> non-const. + static_assert(y.size() == 6, ""); + EXPECT_EQ(arr, y.data()); + ArrayView<const char, 6> z = x; // Copy non-const -> const. + static_assert(z.size() == 6, ""); + EXPECT_EQ(arr, z.data()); + ArrayView<const char, 6> w = z; // Copy const -> const. + static_assert(w.size() == 6, ""); + EXPECT_EQ(arr, w.data()); + // ArrayView<char, 6> v = z; // Compile error, because can't drop const. + + // Copy fixed -> variable. + ArrayView<char> yv = x; // Copy non-const -> non-const. + EXPECT_EQ(6u, yv.size()); + EXPECT_EQ(arr, yv.data()); + ArrayView<const char> zv = x; // Copy non-const -> const. + EXPECT_EQ(6u, zv.size()); + EXPECT_EQ(arr, zv.data()); + ArrayView<const char> wv = z; // Copy const -> const. + EXPECT_EQ(6u, wv.size()); + EXPECT_EQ(arr, wv.data()); + // ArrayView<char> vv = z; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestCopyAssignmentVariable) { + char arr[] = "Arrr!"; + ArrayView<char> x(arr); + EXPECT_EQ(6u, x.size()); + EXPECT_EQ(arr, x.data()); + ArrayView<char> y; + y = x; // Copy non-const -> non-const. + EXPECT_EQ(6u, y.size()); + EXPECT_EQ(arr, y.data()); + ArrayView<const char> z; + z = x; // Copy non-const -> const. + EXPECT_EQ(6u, z.size()); + EXPECT_EQ(arr, z.data()); + ArrayView<const char> w; + w = z; // Copy const -> const. + EXPECT_EQ(6u, w.size()); + EXPECT_EQ(arr, w.data()); + // ArrayView<char> v; + // v = z; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestCopyAssignmentFixed) { + char arr[] = "Arrr!"; + char init[] = "Init!"; + ArrayView<char, 6> x(arr); + EXPECT_EQ(arr, x.data()); + + // Copy fixed -> fixed. + ArrayView<char, 6> y(init); + y = x; // Copy non-const -> non-const. + EXPECT_EQ(arr, y.data()); + ArrayView<const char, 6> z(init); + z = x; // Copy non-const -> const. + EXPECT_EQ(arr, z.data()); + ArrayView<const char, 6> w(init); + w = z; // Copy const -> const. + EXPECT_EQ(arr, w.data()); + // ArrayView<char, 6> v(init); + // v = z; // Compile error, because can't drop const. + + // Copy fixed -> variable. + ArrayView<char> yv; + yv = x; // Copy non-const -> non-const. + EXPECT_EQ(6u, yv.size()); + EXPECT_EQ(arr, yv.data()); + ArrayView<const char> zv; + zv = x; // Copy non-const -> const. + EXPECT_EQ(6u, zv.size()); + EXPECT_EQ(arr, zv.data()); + ArrayView<const char> wv; + wv = z; // Copy const -> const. + EXPECT_EQ(6u, wv.size()); + EXPECT_EQ(arr, wv.data()); + // ArrayView<char> v; + // v = z; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestStdVector) { + std::vector<int> v; + v.push_back(3); + v.push_back(11); + Call<const int>(v); + Call<int>(v); + // Call<unsigned int>(v); // Compile error, because incompatible types. + ArrayView<int> x = v; + EXPECT_EQ(2u, x.size()); + EXPECT_EQ(v.data(), x.data()); + ArrayView<const int> y; + y = v; + EXPECT_EQ(2u, y.size()); + EXPECT_EQ(v.data(), y.data()); + // ArrayView<double> d = v; // Compile error, because incompatible types. + const std::vector<int> cv; + Call<const int>(cv); + // Call<int>(cv); // Compile error, because can't drop const. + ArrayView<const int> z = cv; + EXPECT_EQ(0u, z.size()); + EXPECT_EQ(nullptr, z.data()); + // ArrayView<int> w = cv; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestRtcBuffer) { + rtc::Buffer b = "so buffer"; + Call<const uint8_t>(b); + Call<uint8_t>(b); + // Call<int8_t>(b); // Compile error, because incompatible types. + ArrayView<uint8_t> x = b; + EXPECT_EQ(10u, x.size()); + EXPECT_EQ(b.data(), x.data()); + ArrayView<const uint8_t> y; + y = b; + EXPECT_EQ(10u, y.size()); + EXPECT_EQ(b.data(), y.data()); + // ArrayView<char> d = b; // Compile error, because incompatible types. + const rtc::Buffer cb = "very const"; + Call<const uint8_t>(cb); + // Call<uint8_t>(cb); // Compile error, because can't drop const. + ArrayView<const uint8_t> z = cb; + EXPECT_EQ(11u, z.size()); + EXPECT_EQ(cb.data(), z.data()); + // ArrayView<uint8_t> w = cb; // Compile error, because can't drop const. +} + +TEST(ArrayViewTest, TestSwapVariable) { + const char arr[] = "Arrr!"; + const char aye[] = "Aye, Cap'n!"; + ArrayView<const char> x(arr); + EXPECT_EQ(6u, x.size()); + EXPECT_EQ(arr, x.data()); + ArrayView<const char> y(aye); + EXPECT_EQ(12u, y.size()); + EXPECT_EQ(aye, y.data()); + using std::swap; + swap(x, y); + EXPECT_EQ(12u, x.size()); + EXPECT_EQ(aye, x.data()); + EXPECT_EQ(6u, y.size()); + EXPECT_EQ(arr, y.data()); + // ArrayView<char> z; + // swap(x, z); // Compile error, because can't drop const. +} + +TEST(FixArrayViewTest, TestSwapFixed) { + const char arr[] = "Arr!"; + char aye[] = "Aye!"; + ArrayView<const char, 5> x(arr); + EXPECT_EQ(arr, x.data()); + ArrayView<const char, 5> y(aye); + EXPECT_EQ(aye, y.data()); + using std::swap; + swap(x, y); + EXPECT_EQ(aye, x.data()); + EXPECT_EQ(arr, y.data()); + // ArrayView<char, 5> z(aye); + // swap(x, z); // Compile error, because can't drop const. + // ArrayView<const char, 4> w(aye, 4); + // swap(x, w); // Compile error, because different sizes. +} + +TEST(ArrayViewTest, TestIndexing) { + char arr[] = "abcdefg"; + ArrayView<char> x(arr); + const ArrayView<char> y(arr); + ArrayView<const char, 8> z(arr); + EXPECT_EQ(8u, x.size()); + EXPECT_EQ(8u, y.size()); + EXPECT_EQ(8u, z.size()); + EXPECT_EQ('b', x[1]); + EXPECT_EQ('c', y[2]); + EXPECT_EQ('d', z[3]); + x[3] = 'X'; + y[2] = 'Y'; + // z[1] = 'Z'; // Compile error, because z's element type is const char. + EXPECT_EQ('b', x[1]); + EXPECT_EQ('Y', y[2]); + EXPECT_EQ('X', z[3]); +#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) + EXPECT_DEATH(z[8], ""); // DCHECK error (index out of bounds). +#endif +} + +TEST(ArrayViewTest, TestIterationEmpty) { + // Variable-size. + ArrayView<std::vector<std::vector<std::vector<std::string>>>> av; + EXPECT_EQ(av.begin(), av.end()); + EXPECT_EQ(av.cbegin(), av.cend()); + for (auto& e : av) { + EXPECT_TRUE(false); + EXPECT_EQ(42u, e.size()); // Dummy use of e to prevent unused var warning. + } + + // Fixed-size. + ArrayView<std::vector<std::vector<std::vector<std::string>>>, 0> af; + EXPECT_EQ(af.begin(), af.end()); + EXPECT_EQ(af.cbegin(), af.cend()); + for (auto& e : af) { + EXPECT_TRUE(false); + EXPECT_EQ(42u, e.size()); // Dummy use of e to prevent unused var warning. + } +} + +TEST(ArrayViewTest, TestIterationVariable) { + char arr[] = "Arrr!"; + ArrayView<char> av(arr); + EXPECT_EQ('A', *av.begin()); + EXPECT_EQ('A', *av.cbegin()); + EXPECT_EQ('\0', *(av.end() - 1)); + EXPECT_EQ('\0', *(av.cend() - 1)); + char i = 0; + for (auto& e : av) { + EXPECT_EQ(arr + i, &e); + e = 's' + i; + ++i; + } + i = 0; + for (auto& e : ArrayView<const char>(av)) { + EXPECT_EQ(arr + i, &e); + // e = 'q' + i; // Compile error, because e is a const char&. + ++i; + } +} + +TEST(ArrayViewTest, TestIterationFixed) { + char arr[] = "Arrr!"; + ArrayView<char, 6> av(arr); + EXPECT_EQ('A', *av.begin()); + EXPECT_EQ('A', *av.cbegin()); + EXPECT_EQ('\0', *(av.end() - 1)); + EXPECT_EQ('\0', *(av.cend() - 1)); + char i = 0; + for (auto& e : av) { + EXPECT_EQ(arr + i, &e); + e = 's' + i; + ++i; + } + i = 0; + for (auto& e : ArrayView<const char, 6>(av)) { + EXPECT_EQ(arr + i, &e); + // e = 'q' + i; // Compile error, because e is a const char&. + ++i; + } +} + +TEST(ArrayViewTest, TestEmpty) { + EXPECT_TRUE(ArrayView<int>().empty()); + const int a[] = {1, 2, 3}; + EXPECT_FALSE(ArrayView<const int>(a).empty()); + + static_assert(ArrayView<int, 0>::empty(), ""); + static_assert(!ArrayView<int, 3>::empty(), ""); +} + +TEST(ArrayViewTest, TestCompare) { + int a[] = {1, 2, 3}; + int b[] = {1, 2, 3}; + + EXPECT_EQ(ArrayView<int>(a), ArrayView<int>(a)); + EXPECT_EQ((ArrayView<int, 3>(a)), (ArrayView<int, 3>(a))); + EXPECT_EQ(ArrayView<int>(a), (ArrayView<int, 3>(a))); + EXPECT_EQ(ArrayView<int>(), ArrayView<int>()); + EXPECT_EQ(ArrayView<int>(), ArrayView<int>(a, 0)); + EXPECT_EQ(ArrayView<int>(a, 0), ArrayView<int>(b, 0)); + EXPECT_EQ((ArrayView<int, 0>(a, 0)), ArrayView<int>()); + + EXPECT_NE(ArrayView<int>(a), ArrayView<int>(b)); + EXPECT_NE((ArrayView<int, 3>(a)), (ArrayView<int, 3>(b))); + EXPECT_NE((ArrayView<int, 3>(a)), ArrayView<int>(b)); + EXPECT_NE(ArrayView<int>(a), ArrayView<int>()); + EXPECT_NE(ArrayView<int>(a), ArrayView<int>(a, 2)); + EXPECT_NE((ArrayView<int, 3>(a)), (ArrayView<int, 2>(a, 2))); +} + +TEST(ArrayViewTest, TestSubViewVariable) { + int a[] = {1, 2, 3}; + ArrayView<int> av(a); + + EXPECT_EQ(av.subview(0), av); + + EXPECT_THAT(av.subview(1), ElementsAre(2, 3)); + EXPECT_THAT(av.subview(2), ElementsAre(3)); + EXPECT_THAT(av.subview(3), IsEmpty()); + EXPECT_THAT(av.subview(4), IsEmpty()); + + EXPECT_THAT(av.subview(1, 0), IsEmpty()); + EXPECT_THAT(av.subview(1, 1), ElementsAre(2)); + EXPECT_THAT(av.subview(1, 2), ElementsAre(2, 3)); + EXPECT_THAT(av.subview(1, 3), ElementsAre(2, 3)); +} + +TEST(ArrayViewTest, TestSubViewFixed) { + int a[] = {1, 2, 3}; + ArrayView<int, 3> av(a); + + EXPECT_EQ(av.subview(0), av); + + EXPECT_THAT(av.subview(1), ElementsAre(2, 3)); + EXPECT_THAT(av.subview(2), ElementsAre(3)); + EXPECT_THAT(av.subview(3), IsEmpty()); + EXPECT_THAT(av.subview(4), IsEmpty()); + + EXPECT_THAT(av.subview(1, 0), IsEmpty()); + EXPECT_THAT(av.subview(1, 1), ElementsAre(2)); + EXPECT_THAT(av.subview(1, 2), ElementsAre(2, 3)); + EXPECT_THAT(av.subview(1, 3), ElementsAre(2, 3)); +} + +} // namespace rtc |