Source/wtf/tests/StringImpl.cpp

/*
 * Copyright (C) 2012 Apple Inc. All rights reserved.
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#include "config.h"

#include "wtf/text/StringImpl.h"
#include "wtf/text/WTFString.h"
#include <gtest/gtest.h>

namespace {

TEST(WTF, StringImplCreationFromLiteral)
{
    // Constructor using the template to determine the size.
    RefPtr<StringImpl> stringWithTemplate = StringImpl::createFromLiteral("Template Literal");
    ASSERT_EQ(strlen("Template Literal"), stringWithTemplate->length());
    ASSERT_TRUE(equal(stringWithTemplate.get(), "Template Literal"));
    ASSERT_TRUE(stringWithTemplate->is8Bit());

    // Constructor taking the size explicitely.
    const char* programmaticStringData = "Explicit Size Literal";
    RefPtr<StringImpl> programmaticString = StringImpl::createFromLiteral(programmaticStringData, strlen(programmaticStringData));
    ASSERT_EQ(strlen(programmaticStringData), programmaticString->length());
    ASSERT_TRUE(equal(programmaticString.get(), programmaticStringData));
    ASSERT_EQ(programmaticStringData, reinterpret_cast<const char*>(programmaticString->characters8()));
    ASSERT_TRUE(programmaticString->is8Bit());

    // Constructor without explicit size.
    const char* stringWithoutLengthLiteral = "No Size Literal";
    RefPtr<StringImpl> programmaticStringNoLength = StringImpl::createFromLiteral(stringWithoutLengthLiteral);
    ASSERT_EQ(strlen(stringWithoutLengthLiteral), programmaticStringNoLength->length());
    ASSERT_TRUE(equal(programmaticStringNoLength.get(), stringWithoutLengthLiteral));
    ASSERT_EQ(stringWithoutLengthLiteral, reinterpret_cast<const char*>(programmaticStringNoLength->characters8()));
    ASSERT_TRUE(programmaticStringNoLength->is8Bit());
}

TEST(WTF, StringImplFromLiteralLoop16BitConversion)
{
    RefPtr<StringImpl> controlString = StringImpl::create("Template Literal");
    for (size_t i = 0; i < 10; ++i) {
        RefPtr<StringImpl> string = StringImpl::createFromLiteral("Template Literal");

        ASSERT_EQ(0, memcmp(controlString->bloatedCharacters(), string->bloatedCharacters(), controlString->length() * sizeof(UChar)));
        ASSERT_TRUE(string->has16BitShadow());
    }
}

TEST(WTF, StringImplReplaceWithLiteral)
{
    RefPtr<StringImpl> testStringImpl = StringImpl::createFromLiteral("1224");
    ASSERT_TRUE(testStringImpl->is8Bit());

    // Cases for 8Bit source.
    testStringImpl = testStringImpl->replace('2', "", 0);
    ASSERT_TRUE(equal(testStringImpl.get(), "14"));

    testStringImpl = StringImpl::createFromLiteral("1224");
    ASSERT_TRUE(testStringImpl->is8Bit());

    testStringImpl = testStringImpl->replace('3', "NotFound", 8);
    ASSERT_TRUE(equal(testStringImpl.get(), "1224"));

    testStringImpl = testStringImpl->replace('2', "3", 1);
    ASSERT_TRUE(equal(testStringImpl.get(), "1334"));

    testStringImpl = StringImpl::createFromLiteral("1224");
    ASSERT_TRUE(testStringImpl->is8Bit());
    testStringImpl = testStringImpl->replace('2', "555", 3);
    ASSERT_TRUE(equal(testStringImpl.get(), "15555554"));

    // Cases for 16Bit source.
    String testString = String::fromUTF8("résumé");
    ASSERT_FALSE(testString.impl()->is8Bit());

    testStringImpl = testString.impl()->replace('2', "NotFound", 8);
    ASSERT_TRUE(equal(testStringImpl.get(), String::fromUTF8("résumé").impl()));

    testStringImpl = testString.impl()->replace(UChar(0x00E9 /*U+00E9 is 'é'*/), "e", 1);
    ASSERT_TRUE(equal(testStringImpl.get(), "resume"));

    testString = String::fromUTF8("résumé");
    ASSERT_FALSE(testString.impl()->is8Bit());
    testStringImpl = testString.impl()->replace(UChar(0x00E9 /*U+00E9 is 'é'*/), "", 0);
    ASSERT_TRUE(equal(testStringImpl.get(), "rsum"));

    testString = String::fromUTF8("résumé");
    ASSERT_FALSE(testString.impl()->is8Bit());
    testStringImpl = testString.impl()->replace(UChar(0x00E9 /*U+00E9 is 'é'*/), "555", 3);
    ASSERT_TRUE(equal(testStringImpl.get(), "r555sum555"));
}

} // namespace