1/*
2 * Copyright (C) 2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#include <array>
29#include <wtf/IteratorRange.h>
30#include <wtf/Vector.h>
31
32namespace TestWebKitAPI {
33
34TEST(WTF_IteratorRange, MakeReversedRange)
35{
36 Vector<int> intVector { 10, 11, 12, 13 };
37
38 auto reversedRange = WTF::makeReversedRange(intVector);
39
40 static_assert(std::is_same<decltype(reversedRange.begin()), typename Vector<int>::reverse_iterator>::value, "IteratorRange has correct begin() iterator type");
41 static_assert(std::is_same<decltype(reversedRange.end()), typename Vector<int>::reverse_iterator>::value, "IteratorRange has correct end() iterator type");
42
43 EXPECT_EQ(reversedRange.begin(), intVector.rbegin());
44 EXPECT_EQ(reversedRange.end(), intVector.rend());
45
46 std::array<int, 4> expectedResults { { 13, 12, 11, 10 } };
47 size_t index = 0;
48
49 for (auto& value : reversedRange)
50 EXPECT_EQ(value, expectedResults[index++]);
51}
52
53TEST(WTF_IteratorRange, MakeConstReversedRange)
54{
55 const Vector<int> intVector { 10, 11, 12, 13 };
56
57 auto reversedRange = WTF::makeReversedRange(intVector);
58
59 static_assert(std::is_same<decltype(reversedRange.begin()), typename Vector<int>::const_reverse_iterator>::value, "IteratorRange has correct begin() iterator type");
60 static_assert(std::is_same<decltype(reversedRange.end()), typename Vector<int>::const_reverse_iterator>::value, "IteratorRange has correct end() iterator type");
61
62 EXPECT_EQ(reversedRange.begin(), intVector.rbegin());
63 EXPECT_EQ(reversedRange.end(), intVector.rend());
64
65 std::array<int, 4> expectedResults { { 13, 12, 11, 10 } };
66 size_t index = 0;
67
68 for (auto& value : reversedRange)
69 EXPECT_EQ(value, expectedResults[index++]);
70}
71
72} // namespace TestWebKitAPI
73