Index: third_party/WebKit/Source/wtf/SaturatedArithmeticTest.cpp |
diff --git a/third_party/WebKit/Source/wtf/SaturatedArithmeticTest.cpp b/third_party/WebKit/Source/wtf/SaturatedArithmeticTest.cpp |
deleted file mode 100644 |
index ea0ad0f0023f127ca546cf6afa453b8576494d41..0000000000000000000000000000000000000000 |
--- a/third_party/WebKit/Source/wtf/SaturatedArithmeticTest.cpp |
+++ /dev/null |
@@ -1,153 +0,0 @@ |
-/* |
- * Copyright (c) 2012, Google 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: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * 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. |
- * * Neither the name of Google Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived from |
- * this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
- * OWNER OR 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 "wtf/SaturatedArithmetic.h" |
- |
-#include "testing/gtest/include/gtest/gtest.h" |
-#include <limits.h> |
- |
-namespace WTF { |
- |
-TEST(SaturatedArithmeticTest, Addition) { |
- EXPECT_EQ(0, saturatedAddition(0, 0)); |
- EXPECT_EQ(1, saturatedAddition(0, 1)); |
- EXPECT_EQ(100, saturatedAddition(0, 100)); |
- EXPECT_EQ(150, saturatedAddition(100, 50)); |
- |
- EXPECT_EQ(-1, saturatedAddition(0, -1)); |
- EXPECT_EQ(0, saturatedAddition(1, -1)); |
- EXPECT_EQ(50, saturatedAddition(100, -50)); |
- EXPECT_EQ(-50, saturatedAddition(50, -100)); |
- |
- EXPECT_EQ(INT_MAX - 1, saturatedAddition(INT_MAX - 1, 0)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(INT_MAX - 1, 1)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(INT_MAX - 1, 2)); |
- EXPECT_EQ(INT_MAX - 1, saturatedAddition(0, INT_MAX - 1)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(1, INT_MAX - 1)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(2, INT_MAX - 1)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(INT_MAX - 1, INT_MAX - 1)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(INT_MAX, INT_MAX)); |
- |
- EXPECT_EQ(INT_MIN, saturatedAddition(INT_MIN, 0)); |
- EXPECT_EQ(INT_MIN + 1, saturatedAddition(INT_MIN + 1, 0)); |
- EXPECT_EQ(INT_MIN + 2, saturatedAddition(INT_MIN + 1, 1)); |
- EXPECT_EQ(INT_MIN + 3, saturatedAddition(INT_MIN + 1, 2)); |
- EXPECT_EQ(INT_MIN, saturatedAddition(INT_MIN + 1, -1)); |
- EXPECT_EQ(INT_MIN, saturatedAddition(INT_MIN + 1, -2)); |
- EXPECT_EQ(INT_MIN + 1, saturatedAddition(0, INT_MIN + 1)); |
- EXPECT_EQ(INT_MIN, saturatedAddition(-1, INT_MIN + 1)); |
- EXPECT_EQ(INT_MIN, saturatedAddition(-2, INT_MIN + 1)); |
- |
- EXPECT_EQ(INT_MAX / 2 + 10000, saturatedAddition(INT_MAX / 2, 10000)); |
- EXPECT_EQ(INT_MAX, saturatedAddition(INT_MAX / 2 + 1, INT_MAX / 2 + 1)); |
- EXPECT_EQ(-1, saturatedAddition(INT_MIN, INT_MAX)); |
-} |
- |
-TEST(SaturatedArithmeticTest, Subtraction) { |
- EXPECT_EQ(0, saturatedSubtraction(0, 0)); |
- EXPECT_EQ(-1, saturatedSubtraction(0, 1)); |
- EXPECT_EQ(-100, saturatedSubtraction(0, 100)); |
- EXPECT_EQ(50, saturatedSubtraction(100, 50)); |
- |
- EXPECT_EQ(1, saturatedSubtraction(0, -1)); |
- EXPECT_EQ(2, saturatedSubtraction(1, -1)); |
- EXPECT_EQ(150, saturatedSubtraction(100, -50)); |
- EXPECT_EQ(150, saturatedSubtraction(50, -100)); |
- |
- EXPECT_EQ(INT_MAX, saturatedSubtraction(INT_MAX, 0)); |
- EXPECT_EQ(INT_MAX - 1, saturatedSubtraction(INT_MAX, 1)); |
- EXPECT_EQ(INT_MAX - 1, saturatedSubtraction(INT_MAX - 1, 0)); |
- EXPECT_EQ(INT_MAX, saturatedSubtraction(INT_MAX - 1, -1)); |
- EXPECT_EQ(INT_MAX, saturatedSubtraction(INT_MAX - 1, -2)); |
- EXPECT_EQ(-INT_MAX + 1, saturatedSubtraction(0, INT_MAX - 1)); |
- EXPECT_EQ(-INT_MAX, saturatedSubtraction(-1, INT_MAX - 1)); |
- EXPECT_EQ(-INT_MAX - 1, saturatedSubtraction(-2, INT_MAX - 1)); |
- EXPECT_EQ(-INT_MAX - 1, saturatedSubtraction(-3, INT_MAX - 1)); |
- |
- EXPECT_EQ(INT_MIN, saturatedSubtraction(INT_MIN, 0)); |
- EXPECT_EQ(INT_MIN + 1, saturatedSubtraction(INT_MIN + 1, 0)); |
- EXPECT_EQ(INT_MIN, saturatedSubtraction(INT_MIN + 1, 1)); |
- EXPECT_EQ(INT_MIN, saturatedSubtraction(INT_MIN + 1, 2)); |
- |
- EXPECT_EQ(0, saturatedSubtraction(INT_MIN, INT_MIN)); |
- EXPECT_EQ(0, saturatedSubtraction(INT_MAX, INT_MAX)); |
- EXPECT_EQ(INT_MAX, saturatedSubtraction(INT_MAX, INT_MIN)); |
-} |
- |
-TEST(SaturatedArithmeticTest, SetSigned) { |
- const int kFractionBits = 6; |
- const int intMaxForLayoutUnit = INT_MAX >> kFractionBits; |
- const int intMinForLayoutUnit = INT_MIN >> kFractionBits; |
- |
- EXPECT_EQ(0, saturatedSet<kFractionBits>(0)); |
- |
- // Internally the max number we can represent (without saturating) |
- // is all the (non-sign) bits set except for the bottom n fraction bits |
- const int maxInternalRepresentation = INT_MAX ^ ((1 << kFractionBits) - 1); |
- EXPECT_EQ(maxInternalRepresentation, |
- saturatedSet<kFractionBits>(intMaxForLayoutUnit)); |
- |
- EXPECT_EQ(getMaxSaturatedSetResultForTesting(kFractionBits), |
- saturatedSet<kFractionBits>(intMaxForLayoutUnit + 100)); |
- |
- EXPECT_EQ((intMaxForLayoutUnit - 100) << kFractionBits, |
- saturatedSet<kFractionBits>(intMaxForLayoutUnit - 100)); |
- |
- EXPECT_EQ(getMinSaturatedSetResultForTesting(kFractionBits), |
- saturatedSet<kFractionBits>(intMinForLayoutUnit)); |
- |
- EXPECT_EQ(getMinSaturatedSetResultForTesting(kFractionBits), |
- saturatedSet<kFractionBits>(intMinForLayoutUnit - 100)); |
- |
- // Shifting negative numbers left has undefined behavior, so use |
- // multiplication instead of direct shifting here. |
- EXPECT_EQ((intMinForLayoutUnit + 100) * (1 << kFractionBits), |
- saturatedSet<kFractionBits>(intMinForLayoutUnit + 100)); |
-} |
- |
-TEST(SaturatedArithmeticTest, SetUnsigned) { |
- const int kFractionBits = 6; |
- const int intMaxForLayoutUnit = INT_MAX >> kFractionBits; |
- |
- EXPECT_EQ(0, saturatedSet<kFractionBits>((unsigned)0)); |
- |
- EXPECT_EQ(getMaxSaturatedSetResultForTesting(kFractionBits), |
- saturatedSet<kFractionBits>((unsigned)intMaxForLayoutUnit)); |
- |
- const unsigned kOverflowed = intMaxForLayoutUnit + 100; |
- EXPECT_EQ(getMaxSaturatedSetResultForTesting(kFractionBits), |
- saturatedSet<kFractionBits>(kOverflowed)); |
- |
- const unsigned kNotOverflowed = intMaxForLayoutUnit - 100; |
- EXPECT_EQ((intMaxForLayoutUnit - 100) << kFractionBits, |
- saturatedSet<kFractionBits>(kNotOverflowed)); |
-} |
- |
-} // namespace WTF |