| /* |
| * Copyright (C) 2013 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 <gtest/gtest.h> |
| #include "sky/engine/wtf/StringHasher.h" |
| |
| namespace { |
| |
| static const LChar nullLChars[2] = { 0, 0 }; |
| static const UChar nullUChars[2] = { 0, 0 }; |
| |
| static const unsigned emptyStringHash = 0x4EC889EU; |
| static const unsigned singleNullCharacterHash = 0x3D3ABF44U; |
| |
| static const LChar testALChars[6] = { 0x41, 0x95, 0xFF, 0x50, 0x01, 0 }; |
| static const UChar testAUChars[6] = { 0x41, 0x95, 0xFF, 0x50, 0x01, 0 }; |
| static const UChar testBUChars[6] = { 0x41, 0x95, 0xFFFF, 0x1080, 0x01, 0 }; |
| |
| static const unsigned testAHash1 = 0xEA32B004; |
| static const unsigned testAHash2 = 0x93F0F71E; |
| static const unsigned testAHash3 = 0xCB609EB1; |
| static const unsigned testAHash4 = 0x7984A706; |
| static const unsigned testAHash5 = 0x0427561F; |
| |
| static const unsigned testBHash1 = 0xEA32B004; |
| static const unsigned testBHash2 = 0x93F0F71E; |
| static const unsigned testBHash3 = 0x59EB1B2C; |
| static const unsigned testBHash4 = 0xA7BCCC0A; |
| static const unsigned testBHash5 = 0x79201649; |
| |
| TEST(StringHasherTest, StringHasher) |
| { |
| StringHasher hasher; |
| |
| // The initial state of the hasher. |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| } |
| |
| TEST(StringHasherTest, StringHasher_addCharacter) |
| { |
| StringHasher hasher; |
| |
| // Hashing a single character. |
| hasher = StringHasher(); |
| hasher.addCharacter(0); |
| EXPECT_EQ(singleNullCharacterHash, hasher.hash()); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, checking the intermediate state after each is added. |
| hasher = StringHasher(); |
| hasher.addCharacter(testAUChars[0]); |
| EXPECT_EQ(testAHash1, hasher.hash()); |
| EXPECT_EQ(testAHash1 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testAUChars[1]); |
| EXPECT_EQ(testAHash2, hasher.hash()); |
| EXPECT_EQ(testAHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testAUChars[2]); |
| EXPECT_EQ(testAHash3, hasher.hash()); |
| EXPECT_EQ(testAHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testAUChars[3]); |
| EXPECT_EQ(testAHash4, hasher.hash()); |
| EXPECT_EQ(testAHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testAUChars[4]); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing a second set of five characters, including non-Latin-1 characters. |
| hasher = StringHasher(); |
| hasher.addCharacter(testBUChars[0]); |
| EXPECT_EQ(testBHash1, hasher.hash()); |
| EXPECT_EQ(testBHash1 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testBUChars[1]); |
| EXPECT_EQ(testBHash2, hasher.hash()); |
| EXPECT_EQ(testBHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testBUChars[2]); |
| EXPECT_EQ(testBHash3, hasher.hash()); |
| EXPECT_EQ(testBHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testBUChars[3]); |
| EXPECT_EQ(testBHash4, hasher.hash()); |
| EXPECT_EQ(testBHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testBUChars[4]); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| } |
| |
| TEST(StringHasherTest, StringHasher_addCharacters) |
| { |
| StringHasher hasher; |
| |
| // Hashing zero characters. |
| hasher = StringHasher(); |
| hasher.addCharacters(static_cast<LChar*>(0), 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(nullLChars, 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(static_cast<UChar*>(0), 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(nullUChars, 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing one character. |
| hasher = StringHasher(); |
| hasher.addCharacters(nullLChars, 1); |
| EXPECT_EQ(singleNullCharacterHash, hasher.hash()); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(nullUChars, 1); |
| EXPECT_EQ(singleNullCharacterHash, hasher.hash()); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, all at once. |
| hasher = StringHasher(); |
| hasher.addCharacters(testALChars, 5); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testAUChars, 5); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testBUChars, 5); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, in groups of two, then the last one. |
| hasher = StringHasher(); |
| hasher.addCharacters(testALChars, 2); |
| EXPECT_EQ(testAHash2, hasher.hash()); |
| EXPECT_EQ(testAHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testALChars + 2, 2); |
| EXPECT_EQ(testAHash4, hasher.hash()); |
| EXPECT_EQ(testAHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testALChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testALChars, 2); |
| hasher.addCharacters(testALChars + 2, 2); |
| hasher.addCharacters(testALChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testAUChars, 2); |
| EXPECT_EQ(testAHash2, hasher.hash()); |
| EXPECT_EQ(testAHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testAUChars + 2, 2); |
| EXPECT_EQ(testAHash4, hasher.hash()); |
| EXPECT_EQ(testAHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testAUChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testAUChars, 2); |
| hasher.addCharacters(testAUChars + 2, 2); |
| hasher.addCharacters(testAUChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testBUChars, 2); |
| EXPECT_EQ(testBHash2, hasher.hash()); |
| EXPECT_EQ(testBHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testBUChars + 2, 2); |
| EXPECT_EQ(testBHash4, hasher.hash()); |
| EXPECT_EQ(testBHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testBUChars + 4, 1); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testBUChars, 2); |
| hasher.addCharacters(testBUChars + 2, 2); |
| hasher.addCharacters(testBUChars + 4, 1); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, the first three, then the last two. |
| hasher = StringHasher(); |
| hasher.addCharacters(testALChars, 3); |
| EXPECT_EQ(testAHash3, hasher.hash()); |
| EXPECT_EQ(testAHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testALChars + 3, 2); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testALChars, 3); |
| EXPECT_EQ(testAHash3, hasher.hash()); |
| EXPECT_EQ(testAHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testALChars + 3, 2); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testAUChars, 3); |
| EXPECT_EQ(testAHash3, hasher.hash()); |
| EXPECT_EQ(testAHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testAUChars + 3, 2); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testAUChars, 3); |
| EXPECT_EQ(testAHash3, hasher.hash()); |
| EXPECT_EQ(testAHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testAUChars + 3, 2); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testBUChars, 3); |
| EXPECT_EQ(testBHash3, hasher.hash()); |
| EXPECT_EQ(testBHash3 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacters(testBUChars + 3, 2); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharacters(testBUChars, 3); |
| hasher.addCharacters(testBUChars + 3, 2); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| } |
| |
| TEST(StringHasherTest, StringHasher_addCharactersAssumingAligned) |
| { |
| StringHasher hasher; |
| |
| // Hashing zero characters. |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(static_cast<LChar*>(0), 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(nullLChars, 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(static_cast<UChar*>(0), 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(nullUChars, 0); |
| EXPECT_EQ(emptyStringHash, hasher.hash()); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing one character. |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(nullLChars, 1); |
| EXPECT_EQ(singleNullCharacterHash, hasher.hash()); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(nullUChars, 1); |
| EXPECT_EQ(singleNullCharacterHash, hasher.hash()); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, all at once. |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testALChars, 5); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testAUChars, 5); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testBUChars, 5); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, in groups of two, then the last one. |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testALChars, 2); |
| EXPECT_EQ(testAHash2, hasher.hash()); |
| EXPECT_EQ(testAHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testALChars + 2, 2); |
| EXPECT_EQ(testAHash4, hasher.hash()); |
| EXPECT_EQ(testAHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testALChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testALChars, 2); |
| hasher.addCharactersAssumingAligned(testALChars + 2, 2); |
| hasher.addCharactersAssumingAligned(testALChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testAUChars, 2); |
| EXPECT_EQ(testAHash2, hasher.hash()); |
| EXPECT_EQ(testAHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testAUChars + 2, 2); |
| EXPECT_EQ(testAHash4, hasher.hash()); |
| EXPECT_EQ(testAHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testAUChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testAUChars, 2); |
| hasher.addCharactersAssumingAligned(testAUChars + 2, 2); |
| hasher.addCharactersAssumingAligned(testAUChars + 4, 1); |
| EXPECT_EQ(testAHash5, hasher.hash()); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testBUChars, 2); |
| EXPECT_EQ(testBHash2, hasher.hash()); |
| EXPECT_EQ(testBHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testBUChars + 2, 2); |
| EXPECT_EQ(testBHash4, hasher.hash()); |
| EXPECT_EQ(testBHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testBUChars + 4, 1); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher = StringHasher(); |
| hasher.addCharactersAssumingAligned(testBUChars, 2); |
| hasher.addCharactersAssumingAligned(testBUChars + 2, 2); |
| hasher.addCharactersAssumingAligned(testBUChars + 4, 1); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| |
| // Hashing five characters, first two characters one at a time, |
| // then two more, then the last one. |
| hasher = StringHasher(); |
| hasher.addCharacter(testBUChars[0]); |
| EXPECT_EQ(testBHash1, hasher.hash()); |
| EXPECT_EQ(testBHash1 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharacter(testBUChars[1]); |
| EXPECT_EQ(testBHash2, hasher.hash()); |
| EXPECT_EQ(testBHash2 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testBUChars[2], testBUChars[3]); |
| EXPECT_EQ(testBHash4, hasher.hash()); |
| EXPECT_EQ(testBHash4 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| hasher.addCharactersAssumingAligned(testBUChars + 4, 1); |
| EXPECT_EQ(testBHash5, hasher.hash()); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, hasher.hashWithTop8BitsMasked()); |
| } |
| |
| TEST(StringHasherTest, StringHasher_computeHash) |
| { |
| EXPECT_EQ(emptyStringHash, StringHasher::computeHash(static_cast<LChar*>(0), 0)); |
| EXPECT_EQ(emptyStringHash, StringHasher::computeHash(nullLChars, 0)); |
| EXPECT_EQ(emptyStringHash, StringHasher::computeHash(static_cast<UChar*>(0), 0)); |
| EXPECT_EQ(emptyStringHash, StringHasher::computeHash(nullUChars, 0)); |
| |
| EXPECT_EQ(singleNullCharacterHash, StringHasher::computeHash(nullLChars, 1)); |
| EXPECT_EQ(singleNullCharacterHash, StringHasher::computeHash(nullUChars, 1)); |
| |
| EXPECT_EQ(testAHash5, StringHasher::computeHash(testALChars, 5)); |
| EXPECT_EQ(testAHash5, StringHasher::computeHash(testAUChars, 5)); |
| EXPECT_EQ(testBHash5, StringHasher::computeHash(testBUChars, 5)); |
| } |
| |
| TEST(StringHasherTest, StringHasher_computeHashAndMaskTop8Bits) |
| { |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(static_cast<LChar*>(0), 0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(nullLChars, 0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(static_cast<UChar*>(0), 0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(nullUChars, 0)); |
| |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(nullLChars, 1)); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(nullUChars, 1)); |
| |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(testALChars, 5)); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(testAUChars, 5)); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, StringHasher::computeHashAndMaskTop8Bits(testBUChars, 5)); |
| } |
| |
| TEST(StringHasherTest, StringHasher_hashMemory) |
| { |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::hashMemory(0, 0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::hashMemory(nullUChars, 0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::hashMemory<0>(0)); |
| EXPECT_EQ(emptyStringHash & 0xFFFFFF, StringHasher::hashMemory<0>(nullUChars)); |
| |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, StringHasher::hashMemory(nullUChars, 2)); |
| EXPECT_EQ(singleNullCharacterHash & 0xFFFFFF, StringHasher::hashMemory<2>(nullUChars)); |
| |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, StringHasher::hashMemory(testAUChars, 10)); |
| EXPECT_EQ(testAHash5 & 0xFFFFFF, StringHasher::hashMemory<10>(testAUChars)); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, StringHasher::hashMemory(testBUChars, 10)); |
| EXPECT_EQ(testBHash5 & 0xFFFFFF, StringHasher::hashMemory<10>(testBUChars)); |
| } |
| |
| } // namespace |
