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// 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
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
#include <gtest/gtest.h>
#include "dawn/common/TypedInteger.h"
#include "dawn/common/ityp_array.h"
class ITypArrayTest : public testing::Test {
using Key = TypedInteger<struct KeyT, uint32_t>;
using Val = TypedInteger<struct ValT, uint32_t>;
using Array = ityp::array<Key, Val, 10>;
// Test that the expected array methods can be constexpr
struct ConstexprTest {
static constexpr Array kArr = {Val(0), Val(1), Val(2), Val(3), Val(4),
Val(5), Val(6), Val(7), Val(8), Val(9)};
static_assert(kArr[Key(3)] == Val(3));
static_assert( == Val(7));
static_assert(kArr.size() == Key(10));
// Test that values can be set at an index and retrieved from the same index.
TEST_F(ITypArrayTest, Indexing) {
Array arr;
arr[Key(2)] = Val(5);
arr[Key(1)] = Val(9);
arr[Key(9)] = Val(2);
ASSERT_EQ(arr[Key(2)], Val(5));
ASSERT_EQ(arr[Key(1)], Val(9));
ASSERT_EQ(arr[Key(9)], Val(2));
{ = Val(5); = Val(8); = Val(7);
ASSERT_EQ(, Val(5));
ASSERT_EQ(, Val(8));
ASSERT_EQ(, Val(7));
// Test that the array can be iterated in order with a range-based for loop
TEST_F(ITypArrayTest, RangeBasedIteration) {
Array arr;
// Assign in a non-const range-based for loop
uint32_t i = 0;
for (Val& val : arr) {
val = Val(i);
// Check values in a const range-based for loop
i = 0;
for (Val val : static_cast<const Array&>(arr)) {
ASSERT_EQ(val, arr[Key(i++)]);
// Test that begin/end/front/back/data return pointers/references to the correct elements.
TEST_F(ITypArrayTest, BeginEndFrontBackData) {
Array arr;
// non-const versions
ASSERT_EQ(&arr.front(), &arr[Key(0)]);
ASSERT_EQ(&arr.back(), &arr[Key(9)]);
ASSERT_EQ(, &arr[Key(0)]);
// const versions
const Array& constArr = arr;
ASSERT_EQ(&constArr.front(), &constArr[Key(0)]);
ASSERT_EQ(&constArr.back(), &constArr[Key(9)]);
ASSERT_EQ(, &constArr[Key(0)]);