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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "cc/base/util.h" | |
| 6 | |
| 7 #include "testing/gtest/include/gtest/gtest.h" | |
| 8 | |
| 9 namespace cc { | |
| 10 namespace { | |
| 11 | |
| 12 TEST(UtilTest, RoundUp) { | |
| 13 for (int multiplier = 1; multiplier <= 10; ++multiplier) { | |
| 14 // Try attempts in descending order, so that we can | |
| 15 // determine the correct value before it's needed. | |
| 16 int correct; | |
| 17 for (int attempt = 5 * multiplier; attempt >= -5 * multiplier; --attempt) { | |
| 18 if ((attempt % multiplier) == 0) | |
| 19 correct = attempt; | |
| 20 EXPECT_EQ(correct, RoundUp(attempt, multiplier)) | |
| 21 << "attempt=" << attempt << " multiplier=" << multiplier; | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 for (unsigned multiplier = 1; multiplier <= 10; ++multiplier) { | |
| 26 // Try attempts in descending order, so that we can | |
| 27 // determine the correct value before it's needed. | |
| 28 unsigned correct; | |
| 29 for (unsigned attempt = 5 * multiplier; attempt > 0; --attempt) { | |
| 30 if ((attempt % multiplier) == 0) | |
| 31 correct = attempt; | |
| 32 EXPECT_EQ(correct, RoundUp(attempt, multiplier)) | |
| 33 << "attempt=" << attempt << " multiplier=" << multiplier; | |
| 34 } | |
| 35 EXPECT_EQ(0u, RoundUp(0u, multiplier)) | |
| 36 << "attempt=0 multiplier=" << multiplier; | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 TEST(UtilTest, RoundDown) { | |
| 41 for (int multiplier = 1; multiplier <= 10; ++multiplier) { | |
| 42 // Try attempts in ascending order, so that we can | |
| 43 // determine the correct value before it's needed. | |
| 44 int correct; | |
| 45 for (int attempt = -5 * multiplier; attempt <= 5 * multiplier; ++attempt) { | |
| 46 if ((attempt % multiplier) == 0) | |
| 47 correct = attempt; | |
| 48 EXPECT_EQ(correct, RoundDown(attempt, multiplier)) | |
| 49 << "attempt=" << attempt << " multiplier=" << multiplier; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 for (unsigned multiplier = 1; multiplier <= 10; ++multiplier) { | |
| 54 // Try attempts in ascending order, so that we can | |
| 55 // determine the correct value before it's needed. | |
| 56 unsigned correct; | |
| 57 for (unsigned attempt = 0; attempt <= 5 * multiplier; ++attempt) { | |
| 58 if ((attempt % multiplier) == 0) | |
| 59 correct = attempt; | |
| 60 EXPECT_EQ(correct, RoundDown(attempt, multiplier)) | |
| 61 << "attempt=" << attempt << " multiplier=" << multiplier; | |
| 62 } | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 } // namespace | |
| 67 } // namespace cc | |
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