Tools/TestWebKitAPI/Tests/WTF/JSONValue.cpp

/*
 * Copyright (C) 2017-2019 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 "Test.h"
#include "WTFStringUtilities.h"
#include <wtf/JSONValues.h>

namespace TestWebKitAPI {

TEST(JSONValue, Construct)
{
    {
        Ref<JSON::Value> value = JSON::Value::null();
        EXPECT_TRUE(value->type() == JSON::Value::Type::Null);
        EXPECT_TRUE(value->isNull());
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(true);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
        auto booleanValue = value->asBoolean();
        EXPECT_TRUE(booleanValue);
        EXPECT_EQ(*booleanValue, true);

        value = JSON::Value::create(false);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
        booleanValue = value->asBoolean();
        EXPECT_TRUE(booleanValue);
        EXPECT_EQ(*booleanValue, false);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Integer);
        auto integerValue = value->asInteger();
        EXPECT_TRUE(integerValue);
        EXPECT_EQ(*integerValue, 1);

        // Integers can be converted to doubles.
        auto doubleValue = value->asDouble();
        EXPECT_TRUE(doubleValue);
        EXPECT_EQ(*doubleValue, 1);

        value = JSON::Value::create(std::numeric_limits<int>::max());
        integerValue = value->asInteger();
        EXPECT_TRUE(integerValue);
        EXPECT_EQ(*integerValue, std::numeric_limits<int>::max());
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1.5);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Double);

        auto doubleValue = value->asDouble();
        EXPECT_TRUE(doubleValue);
        EXPECT_EQ(*doubleValue, 1.5);

        // Doubles can be converted to integers.
        auto integerValue = value->asInteger();
        EXPECT_TRUE(integerValue);
        EXPECT_EQ(*integerValue, static_cast<int>(1.5));
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(makeString("webkit"_s));
        EXPECT_TRUE(value->type() == JSON::Value::Type::String);
        auto stringValue = value->asString();
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ(stringValue, "webkit"_s);

        String nullString;
        value = JSON::Value::create(nullString);
        EXPECT_TRUE(value->type() == JSON::Value::Type::String);
        stringValue = value->asString();
        EXPECT_FALSE(!!stringValue);
        EXPECT_TRUE(stringValue.isNull());
        EXPECT_TRUE(stringValue.isEmpty());

        value = JSON::Value::create(emptyString());
        EXPECT_TRUE(value->type() == JSON::Value::Type::String);
        stringValue = value->asString();
        EXPECT_TRUE(!!stringValue);
        EXPECT_FALSE(stringValue.isNull());
        EXPECT_TRUE(stringValue.isEmpty());
    }

    {
        Ref<JSON::Array> array = JSON::Array::create();
        EXPECT_TRUE(array->type() == JSON::Value::Type::Array);
        EXPECT_EQ(array->length(), 0U);
    }

    {
        Ref<JSON::Object> object = JSON::Object::create();
        EXPECT_TRUE(object->type() == JSON::Value::Type::Object);
        EXPECT_EQ(object->size(), 0U);
    }

    {
        auto array = JSON::ArrayOf<String>::create();
        EXPECT_TRUE(array->type() == JSON::Value::Type::Array);
        EXPECT_EQ(array->length(), 0U);
    }
}

TEST(JSONArray, Basic)
{
    Ref<JSON::Array> array = JSON::Array::create();

    array->pushValue(JSON::Value::null());
    EXPECT_EQ(array->length(), 1U);
    auto value = array->get(0);
    EXPECT_TRUE(value->isNull());

    array->pushBoolean(true);
    EXPECT_EQ(array->length(), 2U);
    value = array->get(1);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
    auto booleanValue = value->asBoolean();
    EXPECT_TRUE(booleanValue);
    EXPECT_EQ(*booleanValue, true);

    array->pushInteger(1);
    EXPECT_EQ(array->length(), 3U);
    value = array->get(2);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Integer);
    auto integerValue = value->asInteger();
    EXPECT_TRUE(integerValue);
    EXPECT_EQ(*integerValue, 1);

    array->pushDouble(1.5);
    EXPECT_EQ(array->length(), 4U);
    value = array->get(3);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
    auto doubleValue = value->asDouble();
    EXPECT_TRUE(doubleValue);
    EXPECT_EQ(*doubleValue, 1.5);

    array->pushString("webkit"_s);
    EXPECT_EQ(array->length(), 5U);
    value = array->get(4);
    EXPECT_TRUE(value->type() == JSON::Value::Type::String);
    auto stringValue = value->asString();
    EXPECT_TRUE(!!stringValue);
    EXPECT_EQ(stringValue, "webkit"_s);

    array->pushObject(JSON::Object::create());
    EXPECT_EQ(array->length(), 6U);
    value = array->get(5);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
    auto objectValue = value->asObject();
    EXPECT_TRUE(objectValue);
    EXPECT_EQ(objectValue->size(), 0U);

    array->pushArray(JSON::Array::create());
    EXPECT_EQ(array->length(), 7U);
    value = array->get(6);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
    auto arrayValue = value->asArray();
    EXPECT_TRUE(arrayValue);
    EXPECT_EQ(arrayValue->length(), 0U);

    auto it = array->begin();
    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Null);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Integer);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::String);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
    ++it;
    EXPECT_TRUE(it == array->end());
}

TEST(JSONArrayOf, Basic)
{
    Ref<JSON::ArrayOf<JSON::Value>> array = JSON::ArrayOf<JSON::Value>::create();

    array->addItem(JSON::Value::null());
    EXPECT_EQ(array->length(), 1U);
    auto value = array->get(0);
    EXPECT_TRUE(value->isNull());

    // Note: addItem(bool) is not implemented because it would be ambiguous
    // with addItem(RefPtr<T>), and the latter is much more common to do.

    array->addItem(1);
    EXPECT_EQ(array->length(), 2U);
    value = array->get(1);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Integer);
    auto integerValue = value->asInteger();
    EXPECT_TRUE(integerValue);
    EXPECT_EQ(*integerValue, 1);

    array->addItem(1.5);
    EXPECT_EQ(array->length(), 3U);
    value = array->get(2);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
    auto doubleValue = value->asDouble();
    EXPECT_TRUE(doubleValue);
    EXPECT_EQ(*doubleValue, 1.5);

    array->addItem(makeString("webkit"_s));
    EXPECT_EQ(array->length(), 4U);
    value = array->get(3);
    EXPECT_TRUE(value->type() == JSON::Value::Type::String);
    auto stringValue = value->asString();
    EXPECT_TRUE(!!stringValue);
    EXPECT_EQ(stringValue, "webkit"_s);

    array->addItem(JSON::Object::create());
    EXPECT_EQ(array->length(), 5U);
    value = array->get(4);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
    auto objectValue = value->asObject();
    EXPECT_TRUE(objectValue);
    EXPECT_EQ(objectValue->size(), 0U);

    array->addItem(JSON::Array::create());
    EXPECT_EQ(array->length(), 6U);
    value = array->get(5);
    EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
    auto arrayValue = value->asArray();
    EXPECT_TRUE(arrayValue);
    EXPECT_EQ(arrayValue->length(), 0U);

    auto it = array->begin();
    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Null);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Integer);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::String);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
    ++it;
    EXPECT_FALSE(it == array->end());

    value = it->get();
    EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
    ++it;
    EXPECT_TRUE(it == array->end());
}

TEST(JSONObject, Basic)
{
    Ref<JSON::Object> object = JSON::Object::create();

    object->setValue("null"_s, JSON::Value::null());
    EXPECT_EQ(object->size(), 1U);
    auto value = object->getValue("null"_s);
    EXPECT_TRUE(value);
    EXPECT_TRUE(value->isNull());

    object->setBoolean("boolean"_s, true);
    EXPECT_EQ(object->size(), 2U);
    auto booleanValue = object->getBoolean("boolean"_s);
    EXPECT_TRUE(booleanValue);
    EXPECT_EQ(*booleanValue, true);

    object->setInteger("integer"_s, 1);
    EXPECT_EQ(object->size(), 3U);
    auto integerValue = object->getInteger("integer"_s);
    EXPECT_TRUE(integerValue);
    EXPECT_EQ(*integerValue, 1);

    object->setDouble("double"_s, 1.5);
    EXPECT_EQ(object->size(), 4U);
    auto doubleValue = object->getDouble("double"_s);
    EXPECT_TRUE(doubleValue);
    EXPECT_EQ(*doubleValue, 1.5);

    object->setString("string"_s, "webkit"_s);
    EXPECT_EQ(object->size(), 5U);
    auto stringValue = object->getString("string"_s);
    EXPECT_TRUE(!!stringValue);
    EXPECT_EQ(stringValue, "webkit"_s);

    object->setObject("object"_s, JSON::Object::create());
    EXPECT_EQ(object->size(), 6U);
    auto objectValue = object->getObject("object"_s);
    EXPECT_TRUE(objectValue);
    EXPECT_EQ(objectValue->size(), 0U);

    object->setArray("array"_s, JSON::Array::create());
    EXPECT_EQ(object->size(), 7U);
    auto arrayValue = object->getArray("array"_s);
    EXPECT_TRUE(arrayValue);
    EXPECT_EQ(arrayValue->length(), 0U);

    Vector<String> keys = { "null"_s, "boolean"_s, "integer"_s, "double"_s, "string"_s, "object"_s, "array"_s };
    auto end = object->end();
    for (auto it = object->begin(); it != end; ++it) {
        auto position = keys.find(it->key);
        EXPECT_NE(position, notFound);
        EXPECT_TRUE(it == object->find(keys[position]));
        keys.remove(position);
    }
    EXPECT_TRUE(keys.isEmpty());

    object->remove("null"_s);
    EXPECT_EQ(object->size(), 6U);
    EXPECT_TRUE(object->find("null"_s) == object->end());

    object->remove("boolean"_s);
    EXPECT_EQ(object->size(), 5U);
    EXPECT_TRUE(object->find("boolean"_s) == object->end());

    object->remove("integer"_s);
    EXPECT_EQ(object->size(), 4U);
    EXPECT_TRUE(object->find("integer"_s) == object->end());

    object->remove("double"_s);
    EXPECT_EQ(object->size(), 3U);
    EXPECT_TRUE(object->find("double"_s) == object->end());

    object->remove("string"_s);
    EXPECT_EQ(object->size(), 2U);
    EXPECT_TRUE(object->find("string"_s) == object->end());

    object->remove("object"_s);
    EXPECT_EQ(object->size(), 1U);
    EXPECT_TRUE(object->find("object"_s) == object->end());

    object->remove("array"_s);
    EXPECT_EQ(object->size(), 0U);
    EXPECT_TRUE(object->find("array"_s) == object->end());
}

TEST(JSONValue, ToJSONString)
{
    {
        Ref<JSON::Value> value = JSON::Value::null();
        EXPECT_EQ(value->toJSONString(), "null"_s);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(true);
        EXPECT_EQ(value->toJSONString(), "true"_s);

        value = JSON::Value::create(false);
        EXPECT_EQ(value->toJSONString(), "false"_s);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1);
        EXPECT_EQ(value->toJSONString(), "1"_s);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1.5);
        EXPECT_EQ(value->toJSONString(), "1.5"_s);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(makeString("webkit"_s));
        EXPECT_EQ(value->toJSONString(), "\"webkit\""_s);
    }

    {
        Ref<JSON::Array> array = JSON::Array::create();
        EXPECT_EQ(array->toJSONString(), "[]"_s);
        array->pushValue(JSON::Value::null());
        EXPECT_EQ(array->toJSONString(), "[null]"_s);
        array->pushBoolean(true);
        array->pushBoolean(false);
        EXPECT_EQ(array->toJSONString(), "[null,true,false]"_s);
        array->pushInteger(1);
        array->pushDouble(1.5);
        EXPECT_EQ(array->toJSONString(), "[null,true,false,1,1.5]"_s);
        array->pushString("webkit"_s);
        EXPECT_EQ(array->toJSONString(), "[null,true,false,1,1.5,\"webkit\"]"_s);
        Ref<JSON::Array> subArray = JSON::Array::create();
        subArray->pushString("string"_s);
        subArray->pushObject(JSON::Object::create());
        EXPECT_EQ(subArray->toJSONString(), "[\"string\",{}]"_s);
        array->pushArray(WTFMove(subArray));
        EXPECT_EQ(array->toJSONString(), "[null,true,false,1,1.5,\"webkit\",[\"string\",{}]]"_s);
    }

    {
        Ref<JSON::Object> object = JSON::Object::create();
        EXPECT_EQ(object->toJSONString(), "{}"_s);
        object->setValue("null"_s, JSON::Value::null());
        EXPECT_EQ(object->toJSONString(), "{\"null\":null}"_s);
        object->setBoolean("boolean"_s, true);
        EXPECT_EQ(object->toJSONString(), "{\"null\":null,\"boolean\":true}"_s);
        object->setDouble("double"_s, 1.5);
        EXPECT_EQ(object->toJSONString(), "{\"null\":null,\"boolean\":true,\"double\":1.5}"_s);
        object->setString("string"_s, "webkit"_s);
        EXPECT_EQ(object->toJSONString(), "{\"null\":null,\"boolean\":true,\"double\":1.5,\"string\":\"webkit\"}"_s);
        object->setArray("array"_s, JSON::Array::create());
        EXPECT_EQ(object->toJSONString(), "{\"null\":null,\"boolean\":true,\"double\":1.5,\"string\":\"webkit\",\"array\":[]}"_s);
        Ref<JSON::Object> subObject = JSON::Object::create();
        subObject->setString("foo"_s, "bar"_s);
        subObject->setInteger("baz"_s, 25);
        object->setObject("object"_s, WTFMove(subObject));
        EXPECT_EQ(object->toJSONString(), "{\"null\":null,\"boolean\":true,\"double\":1.5,\"string\":\"webkit\",\"array\":[],\"object\":{\"foo\":\"bar\",\"baz\":25}}"_s);
    }
}

TEST(JSONValue, ParseJSON)
{
    {
        auto value = JSON::Value::parseJSON("null"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->isNull());
    }

    {
        auto value = JSON::Value::parseJSON("true"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
        auto booleanValue = value->asBoolean();
        EXPECT_TRUE(booleanValue);
        EXPECT_EQ(*booleanValue, true);

        value = JSON::Value::parseJSON("false"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Boolean);
        booleanValue = value->asBoolean();
        EXPECT_TRUE(booleanValue);
        EXPECT_EQ(*booleanValue, false);
    }

    {
        auto value = JSON::Value::parseJSON("1"_s);
        EXPECT_TRUE(value);
        // Numbers are always parsed as double.
        EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
        auto doubleValue = value->asDouble();
        EXPECT_TRUE(doubleValue);
        EXPECT_EQ(*doubleValue, 1.0);

        value = JSON::Value::parseJSON("1.5"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Double);
        doubleValue = value->asDouble();
        EXPECT_TRUE(doubleValue);
        EXPECT_EQ(*doubleValue, 1.5);
    }

    {
        auto value = JSON::Value::parseJSON("\"string\""_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::String);
        auto stringValue = value->asString();
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ(stringValue, "string"_s);
    }

    {
        auto value = JSON::Value::parseJSON("[]"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
        auto arrayValue = value->asArray();
        EXPECT_TRUE(arrayValue);
        EXPECT_EQ(arrayValue->length(), 0U);

        value = JSON::Value::parseJSON("[null, 1 ,2.5,[{\"foo\":\"bar\"},{\"baz\":false}],\"webkit\"]"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Array);
        arrayValue = value->asArray();
        EXPECT_TRUE(arrayValue);
        EXPECT_EQ(arrayValue->length(), 5U);
        auto it = arrayValue->begin();
        EXPECT_TRUE((*it)->type() == JSON::Value::Type::Null);
        ++it;
        EXPECT_FALSE(it == arrayValue->end());

        EXPECT_TRUE((*it)->type() == JSON::Value::Type::Double);
        auto integerValue = (*it)->asInteger();
        EXPECT_TRUE(integerValue);
        EXPECT_EQ(*integerValue, 1);
        ++it;
        EXPECT_FALSE(it == arrayValue->end());

        EXPECT_TRUE((*it)->type() == JSON::Value::Type::Double);
        auto doubleValue = (*it)->asDouble();
        EXPECT_TRUE(doubleValue);
        EXPECT_EQ(*doubleValue, 2.5);
        ++it;
        EXPECT_FALSE(it == arrayValue->end());

        EXPECT_TRUE((*it)->type() == JSON::Value::Type::Array);
        auto subArrayValue = (*it)->asArray();
        EXPECT_TRUE(subArrayValue);
        EXPECT_EQ(subArrayValue->length(), 2U);
        auto objectValue = subArrayValue->get(0);
        EXPECT_TRUE(objectValue->type() == JSON::Value::Type::Object);
        auto object = objectValue->asObject();
        EXPECT_TRUE(object);
        EXPECT_EQ(object->size(), 1U);
        auto stringValue = object->getString("foo"_s);
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ(stringValue, "bar"_s);
        objectValue = subArrayValue->get(1);
        EXPECT_TRUE(objectValue->type() == JSON::Value::Type::Object);
        object =objectValue->asObject();
        EXPECT_TRUE(object);
        EXPECT_EQ(object->size(), 1U);
        auto booleanValue = object->getBoolean("baz"_s);
        EXPECT_TRUE(booleanValue);
        EXPECT_EQ(*booleanValue, false);
        ++it;
        EXPECT_FALSE(it == arrayValue->end());

        EXPECT_TRUE((*it)->type() == JSON::Value::Type::String);
        stringValue = (*it)->asString();
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ(stringValue, "webkit"_s);
        ++it;
        EXPECT_TRUE(it == arrayValue->end());
    }

    {
        auto value = JSON::Value::parseJSON("{}"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
        auto objectValue = value->asObject();
        EXPECT_TRUE(objectValue);
        EXPECT_EQ(objectValue->size(), 0U);

        value = JSON::Value::parseJSON("{\"foo\": \"bar\", \"baz\": {\"sub\":[null,false]}}"_s);
        EXPECT_TRUE(value);
        EXPECT_TRUE(value->type() == JSON::Value::Type::Object);
        objectValue = value->asObject();
        EXPECT_TRUE(objectValue);
        EXPECT_EQ(objectValue->size(), 2U);

        auto stringValue = objectValue->getString("foo"_s);
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ(stringValue, "bar"_s);

        auto object = objectValue->getObject("baz"_s);
        EXPECT_TRUE(object);
        EXPECT_EQ(object->size(), 1U);
        auto array = object->getArray("sub"_s);
        EXPECT_TRUE(array);
        EXPECT_EQ(array->length(), 2U);
    }

    {
        EXPECT_FALSE(JSON::Value::parseJSON(","_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"foo"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("foo\""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("TrUe"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("False"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("1.d"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[1,]"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("1,2]"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[1,2"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[1 2]"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[1,2]]"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[1,2],"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{foo:\"bar\"}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{\"foo\":bar}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{\"foo:\"bar\"}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{foo\":\"bar\"}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{{\"foo\":\"bar\"}}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{\"foo\":\"bar\"},"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[{\"foo\":\"bar\"},{\"baz\":false},]"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[{\"foo\":{\"baz\":false}]"_s));
    }

    {
        auto value = JSON::Value::parseJSON(" \"foo\" \n"_s);
        EXPECT_TRUE(value);
        auto stringValue = value->asString();
        EXPECT_TRUE(!!stringValue);
        EXPECT_EQ("foo"_s, stringValue);
    }

    {
        EXPECT_TRUE(JSON::Value::parseJSON(" 1"_s));
        EXPECT_TRUE(JSON::Value::parseJSON("\t1"_s));
        EXPECT_TRUE(JSON::Value::parseJSON("\n1"_s));
        EXPECT_TRUE(JSON::Value::parseJSON("1 "_s));
        EXPECT_TRUE(JSON::Value::parseJSON("1\t"_s));
        EXPECT_TRUE(JSON::Value::parseJSON("1\n"_s));
        EXPECT_TRUE(JSON::Value::parseJSON(" 1 "_s));
        EXPECT_TRUE(JSON::Value::parseJSON(" {} "_s));
        EXPECT_TRUE(JSON::Value::parseJSON(" [] "_s));
        EXPECT_TRUE(JSON::Value::parseJSON("\"\\xFF\""_s));
        EXPECT_TRUE(JSON::Value::parseJSON("\"\\u1234\""_s));

        EXPECT_FALSE(JSON::Value::parseJSON("1 1"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("{} {}"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("[] []"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\xF"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\xF\""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\xF \""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u1"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u1\""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u1   \""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u12"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u12\""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u12  \""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u123"_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u123\""_s));
        EXPECT_FALSE(JSON::Value::parseJSON("\"\\u123 \""_s));
    }
}

TEST(JSONValue, MemoryCost)
{
    {
        Ref<JSON::Value> value = JSON::Value::null();
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(true);
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1.0);
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(1);
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(makeString("test"_s));
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
#if HAVE(36BIT_ADDRESS)
        EXPECT_LE(memoryCost, 44U);
#else
        EXPECT_LE(memoryCost, 36U);
#endif
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(emptyString());
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
#if HAVE(36BIT_ADDRESS)
        EXPECT_LE(memoryCost, 40U);
#else
        EXPECT_LE(memoryCost, 32U);
#endif
    }

    {
        Ref<JSON::Value> value = JSON::Value::create(String());
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Value> valueA = JSON::Value::create(makeString("t"_s));
        Ref<JSON::Value> valueB = JSON::Value::create(makeString("te"_s));
        Ref<JSON::Value> valueC = JSON::Value::create(makeString("tes"_s));
        Ref<JSON::Value> valueD = JSON::Value::create(makeString("test"_s));
        EXPECT_LT(valueA->memoryCost(), valueB->memoryCost());
        EXPECT_LT(valueB->memoryCost(), valueC->memoryCost());
        EXPECT_LT(valueC->memoryCost(), valueD->memoryCost());
    }

    {
        Ref<JSON::Value> valueA = JSON::Value::create(makeString("t"_s));
        Ref<JSON::Value> valueB = JSON::Value::create(makeString("😀"));
        EXPECT_LT(valueA->memoryCost(), valueB->memoryCost());
    }

    {
        Ref<JSON::Object> value = JSON::Object::create();
        value->setValue("test"_s, JSON::Value::null());
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 20U);
    }

    {
        Ref<JSON::Object> value = JSON::Object::create();
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Object> value = JSON::Object::create();

        value->setValue("1"_s, JSON::Value::null());
        size_t memoryCost1 = value->memoryCost();

        value->setValue("2"_s, JSON::Value::null());
        size_t memoryCost2 = value->memoryCost();

        value->setValue("3"_s, JSON::Value::null());
        size_t memoryCost3 = value->memoryCost();

        value->setValue("4"_s, JSON::Value::null());
        size_t memoryCost4 = value->memoryCost();

        EXPECT_LT(memoryCost1, memoryCost2);
        EXPECT_LT(memoryCost2, memoryCost3);
        EXPECT_LT(memoryCost3, memoryCost4);
    }

    {
        Ref<JSON::Array> value = JSON::Array::create();
        value->pushValue(JSON::Value::null());
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 16U);
    }

    {
        Ref<JSON::Array> value = JSON::Array::create();
        size_t memoryCost = value->memoryCost();
        EXPECT_GT(memoryCost, 0U);
        EXPECT_LE(memoryCost, 8U);
    }

    {
        Ref<JSON::Array> value = JSON::Array::create();

        value->pushValue(JSON::Value::null());
        size_t memoryCost1 = value->memoryCost();

        value->pushValue(JSON::Value::null());
        size_t memoryCost2 = value->memoryCost();

        value->pushValue(JSON::Value::null());
        size_t memoryCost3 = value->memoryCost();

        value->pushValue(JSON::Value::null());
        size_t memoryCost4 = value->memoryCost();

        EXPECT_LT(memoryCost1, memoryCost2);
        EXPECT_LT(memoryCost2, memoryCost3);
        EXPECT_LT(memoryCost3, memoryCost4);
    }
}

} // namespace TestWebKitAPI