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// Copyright 2021 The libgav1 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 "src/utils/stack.h"
#include <cstdint>
#include <utility>
#include "gtest/gtest.h"
namespace libgav1 {
namespace {
constexpr int kStackSize = 8;
TEST(StackTest, SimpleType) {
Stack<int, kStackSize> stack;
EXPECT_TRUE(stack.Empty());
for (int i = 0; i < kStackSize; ++i) {
stack.Push(i);
EXPECT_FALSE(stack.Empty());
}
for (int i = kStackSize - 1; i >= 0; --i) {
EXPECT_EQ(stack.Pop(), i);
}
EXPECT_TRUE(stack.Empty());
}
TEST(StackTest, LargeStruct) {
struct LargeMoveOnlyStruct {
LargeMoveOnlyStruct() = default;
// Move only.
LargeMoveOnlyStruct(LargeMoveOnlyStruct&& other) = default;
LargeMoveOnlyStruct& operator=(LargeMoveOnlyStruct&& other) = default;
int32_t array1[1000];
uint64_t array2[2000];
};
Stack<LargeMoveOnlyStruct, kStackSize> stack;
EXPECT_TRUE(stack.Empty());
LargeMoveOnlyStruct large_move_only_struct[kStackSize];
for (int i = 0; i < kStackSize; ++i) {
LargeMoveOnlyStruct& l = large_move_only_struct[i];
l.array1[0] = i;
l.array2[0] = i;
stack.Push(std::move(l));
EXPECT_FALSE(stack.Empty());
}
for (int i = kStackSize - 1; i >= 0; --i) {
LargeMoveOnlyStruct l = stack.Pop();
EXPECT_EQ(l.array1[0], i);
EXPECT_EQ(l.array2[0], i);
}
EXPECT_TRUE(stack.Empty());
}
} // namespace
} // namespace libgav1
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