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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/cxx17_backports.h"
#include <array>
#include <memory>
#include <tuple>
#include <type_traits>
#include <utility>
#include <vector>
#include "base/test/gtest_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
struct OneType {
int some_int;
};
bool operator<(const OneType& lhs, const OneType& rhs) {
return lhs.some_int < rhs.some_int;
}
bool operator==(const OneType& lhs, const OneType& rhs) {
return lhs.some_int == rhs.some_int;
}
struct AnotherType {
int some_other_int;
};
bool operator==(const AnotherType& lhs, const AnotherType& rhs) {
return lhs.some_other_int == rhs.some_other_int;
}
TEST(Cxx17BackportTest, Clamp) {
EXPECT_EQ(0, base::clamp(-5, 0, 10));
EXPECT_EQ(0, base::clamp(0, 0, 10));
EXPECT_EQ(3, base::clamp(3, 0, 10));
EXPECT_EQ(10, base::clamp(10, 0, 10));
EXPECT_EQ(10, base::clamp(15, 0, 10));
EXPECT_EQ(0.0, base::clamp(-5.0, 0.0, 10.0));
EXPECT_EQ(0.0, base::clamp(0.0, 0.0, 10.0));
EXPECT_EQ(3.0, base::clamp(3.0, 0.0, 10.0));
EXPECT_EQ(10.0, base::clamp(10.0, 0.0, 10.0));
EXPECT_EQ(10.0, base::clamp(15.0, 0.0, 10.0));
EXPECT_EQ(0, base::clamp(-5, 0, 0));
EXPECT_EQ(0, base::clamp(0, 0, 0));
EXPECT_EQ(0, base::clamp(3, 0, 0));
OneType one_type_neg5{-5};
OneType one_type_0{0};
OneType one_type_3{3};
OneType one_type_10{10};
OneType one_type_15{15};
EXPECT_EQ(one_type_0, base::clamp(one_type_neg5, one_type_0, one_type_10));
EXPECT_EQ(one_type_0, base::clamp(one_type_0, one_type_0, one_type_10));
EXPECT_EQ(one_type_3, base::clamp(one_type_3, one_type_0, one_type_10));
EXPECT_EQ(one_type_10, base::clamp(one_type_10, one_type_0, one_type_10));
EXPECT_EQ(one_type_10, base::clamp(one_type_15, one_type_0, one_type_10));
AnotherType another_type_neg5{-5};
AnotherType another_type_0{0};
AnotherType another_type_3{3};
AnotherType another_type_10{10};
AnotherType another_type_15{15};
auto compare_another_type = [](const auto& lhs, const auto& rhs) {
return lhs.some_other_int < rhs.some_other_int;
};
EXPECT_EQ(another_type_0, base::clamp(another_type_neg5, another_type_0,
another_type_10, compare_another_type));
EXPECT_EQ(another_type_0, base::clamp(another_type_0, another_type_0,
another_type_10, compare_another_type));
EXPECT_EQ(another_type_3, base::clamp(another_type_3, another_type_0,
another_type_10, compare_another_type));
EXPECT_EQ(another_type_10,
base::clamp(another_type_10, another_type_0, another_type_10,
compare_another_type));
EXPECT_EQ(another_type_10,
base::clamp(another_type_15, another_type_0, another_type_10,
compare_another_type));
EXPECT_CHECK_DEATH(base::clamp(3, 10, 0));
EXPECT_CHECK_DEATH(base::clamp(3.0, 10.0, 0.0));
EXPECT_CHECK_DEATH(base::clamp(one_type_3, one_type_10, one_type_0));
EXPECT_CHECK_DEATH(base::clamp(another_type_3, another_type_10,
another_type_0, compare_another_type));
}
} // namespace
} // namespace base
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