| // Copyright 2020 The Dawn Authors |
| // |
| // 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 <array> |
| |
| #include "gtest/gtest.h" |
| |
| #include "dawn/common/TypedInteger.h" |
| #include "dawn/common/ityp_span.h" |
| |
| class ITypSpanTest : public testing::Test { |
| protected: |
| using Key = TypedInteger<struct KeyT, size_t>; |
| using Val = TypedInteger<struct ValT, uint32_t>; |
| using Span = ityp::span<Key, Val>; |
| }; |
| |
| // Test that values can be set at an index and retrieved from the same index. |
| TEST_F(ITypSpanTest, Indexing) { |
| std::array<Val, 10> arr; |
| Span span(arr.data(), Key(arr.size())); |
| { |
| span[Key(2)] = Val(5); |
| span[Key(1)] = Val(9); |
| span[Key(9)] = Val(2); |
| |
| ASSERT_EQ(span[Key(2)], Val(5)); |
| ASSERT_EQ(span[Key(1)], Val(9)); |
| ASSERT_EQ(span[Key(9)], Val(2)); |
| } |
| } |
| |
| // Test that the span can be is iterated in order with a range-based for loop |
| TEST_F(ITypSpanTest, RangeBasedIteration) { |
| std::array<Val, 10> arr; |
| Span span(arr.data(), Key(arr.size())); |
| |
| // Assign in a non-const range-based for loop |
| uint32_t i = 0; |
| for (Val& val : span) { |
| val = Val(i); |
| } |
| |
| // Check values in a const range-based for loop |
| i = 0; |
| for (Val val : static_cast<const Span&>(span)) { |
| ASSERT_EQ(val, span[Key(i++)]); |
| } |
| } |
| |
| // Test that begin/end/front/back/data return pointers/references to the correct elements. |
| TEST_F(ITypSpanTest, BeginEndFrontBackData) { |
| std::array<Val, 10> arr; |
| Span span(arr.data(), Key(arr.size())); |
| |
| // non-const versions |
| ASSERT_EQ(span.begin(), &span[Key(0)]); |
| ASSERT_EQ(span.end(), &span[Key(0)] + static_cast<size_t>(span.size())); |
| ASSERT_EQ(&span.front(), &span[Key(0)]); |
| ASSERT_EQ(&span.back(), &span[Key(9)]); |
| ASSERT_EQ(span.data(), &span[Key(0)]); |
| |
| // const versions |
| const Span& constSpan = span; |
| ASSERT_EQ(constSpan.begin(), &constSpan[Key(0)]); |
| ASSERT_EQ(constSpan.end(), &constSpan[Key(0)] + static_cast<size_t>(constSpan.size())); |
| ASSERT_EQ(&constSpan.front(), &constSpan[Key(0)]); |
| ASSERT_EQ(&constSpan.back(), &constSpan[Key(9)]); |
| ASSERT_EQ(constSpan.data(), &constSpan[Key(0)]); |
| } |