81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "ui/gfx/geometry/safe_integer_conversions.h"
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#include <limits>
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#include "testing/gtest/include/gtest/gtest.h"
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namespace gfx {
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TEST(SafeIntegerConversions, ToFlooredInt) {
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float max = std::numeric_limits<int>::max();
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float min = std::numeric_limits<int>::min();
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float infinity = std::numeric_limits<float>::infinity();
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int int_max = std::numeric_limits<int>::max();
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int int_min = std::numeric_limits<int>::min();
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EXPECT_EQ(int_max, ToFlooredInt(infinity));
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EXPECT_EQ(int_max, ToFlooredInt(max));
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EXPECT_EQ(int_max, ToFlooredInt(max + 100));
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EXPECT_EQ(-101, ToFlooredInt(-100.5f));
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EXPECT_EQ(0, ToFlooredInt(0.f));
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EXPECT_EQ(100, ToFlooredInt(100.5f));
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EXPECT_EQ(int_min, ToFlooredInt(-infinity));
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EXPECT_EQ(int_min, ToFlooredInt(min));
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EXPECT_EQ(int_min, ToFlooredInt(min - 100));
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}
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TEST(SafeIntegerConversions, ToCeiledInt) {
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float max = std::numeric_limits<int>::max();
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float min = std::numeric_limits<int>::min();
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float infinity = std::numeric_limits<float>::infinity();
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int int_max = std::numeric_limits<int>::max();
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int int_min = std::numeric_limits<int>::min();
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EXPECT_EQ(int_max, ToCeiledInt(infinity));
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EXPECT_EQ(int_max, ToCeiledInt(max));
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EXPECT_EQ(int_max, ToCeiledInt(max + 100));
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EXPECT_EQ(-100, ToCeiledInt(-100.5f));
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EXPECT_EQ(0, ToCeiledInt(0.f));
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EXPECT_EQ(101, ToCeiledInt(100.5f));
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EXPECT_EQ(int_min, ToCeiledInt(-infinity));
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EXPECT_EQ(int_min, ToCeiledInt(min));
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EXPECT_EQ(int_min, ToCeiledInt(min - 100));
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}
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TEST(SafeIntegerConversions, ToRoundedInt) {
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float max = std::numeric_limits<int>::max();
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float min = std::numeric_limits<int>::min();
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float infinity = std::numeric_limits<float>::infinity();
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int int_max = std::numeric_limits<int>::max();
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int int_min = std::numeric_limits<int>::min();
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EXPECT_EQ(int_max, ToRoundedInt(infinity));
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EXPECT_EQ(int_max, ToRoundedInt(max));
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EXPECT_EQ(int_max, ToRoundedInt(max + 100));
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EXPECT_EQ(-100, ToRoundedInt(-100.1f));
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EXPECT_EQ(-101, ToRoundedInt(-100.5f));
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EXPECT_EQ(-101, ToRoundedInt(-100.9f));
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EXPECT_EQ(0, ToRoundedInt(0.f));
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EXPECT_EQ(100, ToRoundedInt(100.1f));
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EXPECT_EQ(101, ToRoundedInt(100.5f));
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EXPECT_EQ(101, ToRoundedInt(100.9f));
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EXPECT_EQ(int_min, ToRoundedInt(-infinity));
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EXPECT_EQ(int_min, ToRoundedInt(min));
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EXPECT_EQ(int_min, ToRoundedInt(min - 100));
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}
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} // namespace gfx
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