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// Copyright 2014 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <gtest/gtest.h>
#include "Common/FixedSizeQueue.h"
TEST(FixedSizeQueue, Simple)
{
Common::FixedSizeQueue<int, 5> q;
EXPECT_EQ(0u, q.size());
q.push(0);
q.push(1);
q.push(2);
q.push(3);
q.push(4);
for (int i = 0; i < 1000; ++i)
{
EXPECT_EQ(i, q.front());
EXPECT_EQ(i, q.pop_front());
q.push(i + 5);
}
EXPECT_EQ(1000, q.pop_front());
EXPECT_EQ(1001, q.pop_front());
EXPECT_EQ(1002, q.pop_front());
EXPECT_EQ(1003, q.pop_front());
EXPECT_EQ(1004, q.pop_front());
EXPECT_EQ(0u, q.size());
}
TEST(FixedSizeQueue, RingBuffer)
{
// Testing if queue works when used as a ring buffer
Common::FixedSizeQueue<int, 5> q;
EXPECT_EQ(0u, q.size());
q.push(0);
q.push(1);
q.push(2);
q.push(3);
q.push(4);
q.push(5);
EXPECT_EQ(5u, q.size());
EXPECT_EQ(1, q.pop_front());
EXPECT_EQ(4u, q.size());
}
// Local classes cannot have static fields,
// therefore this has to be declared in global scope.
class NonTrivialTypeTestData
{
public:
static inline int num_objects = 0;
static inline int total_constructed = 0;
static inline int default_constructed = 0;
static inline int total_destructed = 0;
NonTrivialTypeTestData()
{
num_objects++;
total_constructed++;
default_constructed++;
}
NonTrivialTypeTestData(int /*val*/)
{
num_objects++;
total_constructed++;
}
~NonTrivialTypeTestData()
{
num_objects--;
total_destructed++;
}
};
TEST(FixedSizeQueue, NonTrivialTypes)
{
// Testing if construction/destruction of non-trivial types happens as expected
Common::FixedSizeQueue<NonTrivialTypeTestData, 2> q;
EXPECT_EQ(0u, q.size());
EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(0, NonTrivialTypeTestData::total_destructed);
q.emplace(4);
q.emplace(6);
q.emplace(8);
EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2 + 3, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(3, NonTrivialTypeTestData::total_destructed);
EXPECT_EQ(2u, q.size());
q.pop();
q.pop();
EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2 + 3 + 2, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2 + 2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(3 + 2, NonTrivialTypeTestData::total_destructed);
EXPECT_EQ(0u, q.size());
}
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