Tools/TestWebKitAPI/Tests/WTF/Deque.cpp

/*
 * Copyright (C) 2011 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#include "config.h"

#include "MoveOnly.h"
#include <wtf/Deque.h>

namespace TestWebKitAPI {

TEST(WTF_Deque, Iterator)
{
    Deque<int> deque;
    deque.append(11);
    deque.prepend(10);
    deque.append(12);
    deque.append(13);

    Deque<int>::iterator it = deque.begin();
    Deque<int>::iterator end = deque.end();
    EXPECT_TRUE(end != it);

    EXPECT_EQ(10, *it);
    ++it;
    EXPECT_EQ(11, *it);
    ++it;
    EXPECT_EQ(12, *it);
    ++it;
    EXPECT_EQ(13, *it);
    ++it;

    EXPECT_TRUE(end == it);
}

TEST(WTF_Deque, InitializerList)
{
    Deque<int> deque = { 1, 2, 3, 4 };

    EXPECT_EQ(4u, deque.size());

    auto it = deque.begin();
    auto end = deque.end();
    EXPECT_TRUE(end != it);

    EXPECT_EQ(1, *it);
    ++it;
    EXPECT_EQ(2, *it);
    ++it;
    EXPECT_EQ(3, *it);
    ++it;
    EXPECT_EQ(4, *it);
    ++it;

    EXPECT_TRUE(end == it);
}

TEST(WTF, DequeReverseIterator)
{
    Deque<int> deque;
    deque.append(11);
    deque.prepend(10);
    deque.append(12);
    deque.append(13);

    Deque<int>::reverse_iterator it = deque.rbegin();
    Deque<int>::reverse_iterator end = deque.rend();
    EXPECT_TRUE(end != it);

    EXPECT_EQ(13, *it);
    ++it;
    EXPECT_EQ(12, *it);
    ++it;
    EXPECT_EQ(11, *it);
    ++it;
    EXPECT_EQ(10, *it);
    ++it;

    EXPECT_TRUE(end == it);
}

TEST(WTF_Deque, Remove)
{
    Deque<int> deque;
    deque.append(11);
    deque.prepend(10);
    deque.append(12);
    deque.append(13);

    EXPECT_EQ(10, deque.first());
    EXPECT_EQ(13, deque.last());

    deque.removeLast();
    EXPECT_EQ(10, deque.first());
    EXPECT_EQ(12, deque.last());

    deque.removeFirst();
    EXPECT_EQ(11, deque.first());
    EXPECT_EQ(12, deque.last());

    deque.removeFirst();
    EXPECT_EQ(12, deque.first());
    EXPECT_EQ(12, deque.last());

    deque.removeLast();
    EXPECT_TRUE(deque.isEmpty());
}

TEST(WTF_Deque, MoveOnly)
{
    Deque<MoveOnly> deque;

    deque.append(MoveOnly(1));
    deque.prepend(MoveOnly(0));

    EXPECT_EQ(0U, deque.first().value());
    EXPECT_EQ(1U, deque.last().value());

    auto first = deque.takeFirst();
    EXPECT_EQ(0U, first.value());

    auto last = deque.takeLast();
    EXPECT_EQ(1U, last.value());
}

TEST(WTF_Deque, MoveConstructor)
{
    Deque<MoveOnly, 4> deque;

    for (unsigned i = 0; i < 10; ++i)
        deque.append(MoveOnly(i));

    EXPECT_EQ(10u, deque.size());

    Deque<MoveOnly, 4> deque2 = WTFMove(deque);

    EXPECT_EQ(10u, deque2.size());

    unsigned i = 0;
    for (auto& element : deque2) {
        EXPECT_EQ(i, element.value());
        ++i;
    }
}

TEST(WTF_Deque, MoveAssignmentOperator)
{
    Deque<MoveOnly, 4> deque1;

    for (unsigned i = 0; i < 10; ++i)
        deque1.append(MoveOnly(i));

    EXPECT_EQ(10u, deque1.size());

    Deque<MoveOnly, 4> deque2;
    for (unsigned i = 0; i < 10; ++i)
        deque2.append(MoveOnly(i * 2));

    deque1 = WTFMove(deque2);

    EXPECT_EQ(10u, deque2.size());

    unsigned i = 0;
    for (auto& element : deque1) {
        EXPECT_EQ(i * 2, element.value());
        ++i;
    }
}

} // namespace TestWebKitAPI