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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/base/util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
TEST(UtilTest, RoundUp) {
for (int multiplier = 1; multiplier <= 10; ++multiplier) {
// Try attempts in descending order, so that we can
// determine the correct value before it's needed.
int correct;
for (int attempt = 5 * multiplier; attempt >= -5 * multiplier; --attempt) {
if ((attempt % multiplier) == 0)
correct = attempt;
EXPECT_EQ(correct, RoundUp(attempt, multiplier))
<< "attempt=" << attempt << " multiplier=" << multiplier;
}
}
for (unsigned multiplier = 1; multiplier <= 10; ++multiplier) {
// Try attempts in descending order, so that we can
// determine the correct value before it's needed.
unsigned correct;
for (unsigned attempt = 5 * multiplier; attempt > 0; --attempt) {
if ((attempt % multiplier) == 0)
correct = attempt;
EXPECT_EQ(correct, RoundUp(attempt, multiplier))
<< "attempt=" << attempt << " multiplier=" << multiplier;
}
EXPECT_EQ(0u, RoundUp(0u, multiplier))
<< "attempt=0 multiplier=" << multiplier;
}
}
TEST(UtilTest, RoundDown) {
for (int multiplier = 1; multiplier <= 10; ++multiplier) {
// Try attempts in ascending order, so that we can
// determine the correct value before it's needed.
int correct;
for (int attempt = -5 * multiplier; attempt <= 5 * multiplier; ++attempt) {
if ((attempt % multiplier) == 0)
correct = attempt;
EXPECT_EQ(correct, RoundDown(attempt, multiplier))
<< "attempt=" << attempt << " multiplier=" << multiplier;
}
}
for (unsigned multiplier = 1; multiplier <= 10; ++multiplier) {
// Try attempts in ascending order, so that we can
// determine the correct value before it's needed.
unsigned correct;
for (unsigned attempt = 0; attempt <= 5 * multiplier; ++attempt) {
if ((attempt % multiplier) == 0)
correct = attempt;
EXPECT_EQ(correct, RoundDown(attempt, multiplier))
<< "attempt=" << attempt << " multiplier=" << multiplier;
}
}
}
} // namespace
} // namespace cc
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