summaryrefslogtreecommitdiff
path: root/chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp
diff options
context:
space:
mode:
authorAndras Becsi <andras.becsi@digia.com>2014-03-18 13:16:26 +0100
committerFrederik Gladhorn <frederik.gladhorn@digia.com>2014-03-20 15:55:39 +0100
commit3f0f86b0caed75241fa71c95a5d73bc0164348c5 (patch)
tree92b9fb00f2e9e90b0be2262093876d4f43b6cd13 /chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp
parente90d7c4b152c56919d963987e2503f9909a666d2 (diff)
downloadqtwebengine-chromium-3f0f86b0caed75241fa71c95a5d73bc0164348c5.tar.gz
Update to new stable branch 1750
This also includes an updated ninja and chromium dependencies needed on Windows. Change-Id: Icd597d80ed3fa4425933c9f1334c3c2e31291c42 Reviewed-by: Zoltan Arvai <zarvai@inf.u-szeged.hu> Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>
Diffstat (limited to 'chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp')
-rw-r--r--chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp151
1 files changed, 151 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp b/chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp
new file mode 100644
index 00000000000..650e3ac29c5
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/wtf/CheckedArithmeticTest.cpp
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2011 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
+
+#include "wtf/CheckedArithmetic.h"
+#include <gtest/gtest.h>
+
+namespace {
+
+#define CheckedArithmeticTest(type, coerceLiteral, MixedSignednessTest) \
+ TEST(WTF, Checked_##type) \
+ { \
+ Checked<type, RecordOverflow> value; \
+ EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); \
+ EXPECT_EQ(std::numeric_limits<type>::max(), (value + std::numeric_limits<type>::max()).unsafeGet()); \
+ EXPECT_EQ(std::numeric_limits<type>::max(), (std::numeric_limits<type>::max() + value).unsafeGet()); \
+ EXPECT_EQ(std::numeric_limits<type>::min(), (value + std::numeric_limits<type>::min()).unsafeGet()); \
+ EXPECT_EQ(std::numeric_limits<type>::min(), (std::numeric_limits<type>::min() + value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value * coerceLiteral(0)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) * value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value * value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(0)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (coerceLiteral(0) - value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value - value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value++).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(1), (value--).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(1), (++value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (--value).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(10), (value += coerceLiteral(10)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(100), (value *= coerceLiteral(10)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(100), value.unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value -= coerceLiteral(100)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), value.unsafeGet()); \
+ value = 10; \
+ EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(0), (value - coerceLiteral(10)).unsafeGet()); \
+ EXPECT_EQ(coerceLiteral(10), value.unsafeGet()); \
+ value = std::numeric_limits<type>::min(); \
+ EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - coerceLiteral(1))).hasOverflowed()); \
+ EXPECT_EQ(true, !((value--).hasOverflowed())); \
+ EXPECT_EQ(true, value.hasOverflowed()); \
+ value = std::numeric_limits<type>::max(); \
+ EXPECT_EQ(true, !value.hasOverflowed()); \
+ EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + coerceLiteral(1))).hasOverflowed()); \
+ EXPECT_EQ(true, !(value++).hasOverflowed()); \
+ EXPECT_EQ(true, value.hasOverflowed()); \
+ value = std::numeric_limits<type>::max(); \
+ EXPECT_EQ(true, (value += coerceLiteral(1)).hasOverflowed()); \
+ EXPECT_EQ(true, value.hasOverflowed()); \
+ value = 10; \
+ type _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(0)).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(0) * value).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \
+ value = 0; \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \
+ value = 1; \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * value).safeGet(_value)); \
+ _value = 0; \
+ value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)0).safeGet(_value)); \
+ _value = 0; \
+ value = 1; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidNotOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)1).safeGet(_value)); \
+ _value = 0; \
+ value = 2; \
+ EXPECT_EQ(true, CheckedState::DidOverflow == (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).safeGet(_value)); \
+ _value = 0; \
+ EXPECT_EQ(true, CheckedState::DidOverflow == (Checked<type, RecordOverflow>(std::numeric_limits<type>::max()) * (type)2).safeGet(_value)); \
+ value = 10; \
+ EXPECT_EQ(true, (value * Checked<type, RecordOverflow>(std::numeric_limits<type>::max())).hasOverflowed()); \
+ MixedSignednessTest(EXPECT_EQ(coerceLiteral(0), (value + -10).unsafeGet())); \
+ MixedSignednessTest(EXPECT_EQ(0U, (value - 10U).unsafeGet())); \
+ MixedSignednessTest(EXPECT_EQ(coerceLiteral(0), (-10 + value).unsafeGet())); \
+ MixedSignednessTest(EXPECT_EQ(0U, (10U - value).unsafeGet())); \
+ value = std::numeric_limits<type>::min(); \
+ MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value - 1)).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, !(value--).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ value = std::numeric_limits<type>::max(); \
+ MixedSignednessTest(EXPECT_EQ(true, !value.hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1)).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, !(value++).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ value = std::numeric_limits<type>::max(); \
+ MixedSignednessTest(EXPECT_EQ(true, (value += 1).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ value = std::numeric_limits<type>::min(); \
+ MixedSignednessTest(EXPECT_EQ(true, (value - 1U).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, !(value--).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ value = std::numeric_limits<type>::max(); \
+ MixedSignednessTest(EXPECT_EQ(true, !value.hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, (Checked<type, RecordOverflow>(value + 1U)).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, !(value++).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ value = std::numeric_limits<type>::max(); \
+ MixedSignednessTest(EXPECT_EQ(true, (value += 1U).hasOverflowed())); \
+ MixedSignednessTest(EXPECT_EQ(true, value.hasOverflowed())); \
+ }
+
+#define CoerceLiteralToUnsigned(x) x##U
+#define CoerceLiteralNop(x) x
+#define AllowMixedSignednessTest(x) x
+#define IgnoreMixedSignednessTest(x)
+CheckedArithmeticTest(int8_t, CoerceLiteralNop, IgnoreMixedSignednessTest)
+CheckedArithmeticTest(int16_t, CoerceLiteralNop, IgnoreMixedSignednessTest)
+CheckedArithmeticTest(int32_t, CoerceLiteralNop, AllowMixedSignednessTest)
+CheckedArithmeticTest(uint32_t, CoerceLiteralToUnsigned, AllowMixedSignednessTest)
+CheckedArithmeticTest(int64_t, CoerceLiteralNop, IgnoreMixedSignednessTest)
+CheckedArithmeticTest(uint64_t, CoerceLiteralToUnsigned, IgnoreMixedSignednessTest)
+
+} // namespace