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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <array>
#include <wtf/IteratorRange.h>
#include <wtf/Vector.h>
namespace TestWebKitAPI {
TEST(WTF_IteratorRange, MakeReversedRange)
{
Vector<int> intVector { 10, 11, 12, 13 };
auto reversedRange = WTF::makeReversedRange(intVector);
static_assert(std::is_same<decltype(reversedRange.begin()), typename Vector<int>::reverse_iterator>::value, "IteratorRange has correct begin() iterator type");
static_assert(std::is_same<decltype(reversedRange.end()), typename Vector<int>::reverse_iterator>::value, "IteratorRange has correct end() iterator type");
EXPECT_EQ(reversedRange.begin(), intVector.rbegin());
EXPECT_EQ(reversedRange.end(), intVector.rend());
std::array<int, 4> expectedResults { { 13, 12, 11, 10 } };
size_t index = 0;
for (auto& value : reversedRange)
EXPECT_EQ(value, expectedResults[index++]);
}
TEST(WTF_IteratorRange, MakeConstReversedRange)
{
const Vector<int> intVector { 10, 11, 12, 13 };
auto reversedRange = WTF::makeReversedRange(intVector);
static_assert(std::is_same<decltype(reversedRange.begin()), typename Vector<int>::const_reverse_iterator>::value, "IteratorRange has correct begin() iterator type");
static_assert(std::is_same<decltype(reversedRange.end()), typename Vector<int>::const_reverse_iterator>::value, "IteratorRange has correct end() iterator type");
EXPECT_EQ(reversedRange.begin(), intVector.rbegin());
EXPECT_EQ(reversedRange.end(), intVector.rend());
std::array<int, 4> expectedResults { { 13, 12, 11, 10 } };
size_t index = 0;
for (auto& value : reversedRange)
EXPECT_EQ(value, expectedResults[index++]);
}
TEST(WTF_IteratorRange, MakeReversedRangeFromRange)
{
Vector<int> intVector { 10, 11, 12, 13 };
auto range = IteratorRange { intVector.begin(), intVector.end() };
auto reversedRange = makeReversedRange(range);
EXPECT_EQ(reversedRange.begin(), intVector.rbegin());
EXPECT_EQ(reversedRange.end(), intVector.rend());
std::array<int, 4> expectedResults { { 13, 12, 11, 10 } };
size_t index = 0;
for (auto& value : reversedRange)
EXPECT_EQ(value, expectedResults[index++]);
}
TEST(WTF_IteratorRange, OneWayIterator)
{
struct OneWayIterator {
int* ptr;
bool operator!=(const OneWayIterator& other) { return ptr != other.ptr; }
auto& operator*() const { return *ptr; }
void operator++() { ++ptr; }
};
Vector<int> intVector { 10, 11, 12, 13 };
auto range = IteratorRange { OneWayIterator { intVector.begin() }, OneWayIterator { intVector.end() } };
std::array<int, 4> expectedResults { { 10, 11, 12, 13 } };
size_t index = 0;
for (auto& value : range)
EXPECT_EQ(value, expectedResults[index++]);
}
} // namespace TestWebKitAPI
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