ladybird/Tests/AK/TestCircularDeque.cpp

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/*
* Copyright (c) 2020, Fei Wu <f.eiwu@yahoo.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/CircularDeque.h>
#include <AK/DeprecatedString.h>
#include <AK/StdLibExtras.h>
TEST_CASE(enqueue_begin)
{
CircularDeque<int, 3> ints;
ints.enqueue_begin(0);
EXPECT_EQ(ints.size(), 1u);
EXPECT_EQ(ints.first(), 0);
ints.enqueue_begin(1);
EXPECT_EQ(ints.size(), 2u);
EXPECT_EQ(ints.first(), 1);
EXPECT_EQ(ints.last(), 0);
ints.enqueue_begin(2);
EXPECT_EQ(ints.size(), 3u);
EXPECT_EQ(ints.first(), 2);
EXPECT_EQ(ints.last(), 0);
ints.enqueue_begin(3);
EXPECT_EQ(ints.size(), 3u);
EXPECT_EQ(ints.first(), 3);
EXPECT_EQ(ints.at(1), 2);
EXPECT_EQ(ints.last(), 1);
}
TEST_CASE(enqueue_begin_being_moved_from)
{
CircularDeque<DeprecatedString, 2> strings;
DeprecatedString str { "test" };
strings.enqueue_begin(move(str));
EXPECT(str.is_null());
}
TEST_CASE(deque_end)
{
CircularDeque<int, 3> ints;
ints.enqueue(0);
ints.enqueue(1);
ints.enqueue(2);
EXPECT_EQ(ints.size(), 3u);
EXPECT_EQ(ints.dequeue_end(), 2);
EXPECT_EQ(ints.size(), 2u);
EXPECT_EQ(ints.dequeue_end(), 1);
EXPECT_EQ(ints.size(), 1u);
EXPECT_EQ(ints.dequeue_end(), 0);
EXPECT(ints.is_empty());
}