Tools/TestWebKitAPI/Tests/WebCore/ParsedContentRange.cpp

/*
 * Copyright (C) 2016 Apple Inc. All rights reserved.
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#include "config.h"

#include <WebCore/ParsedContentRange.h>
#include <WebCore/ParsedRequestRange.h>
#include <wtf/text/WTFString.h>

using namespace WebCore;

namespace TestWebKitAPI {

TEST(WebCore, ParsedContentRangeFromString)
{
    // Basic parsing
    ASSERT_TRUE(ParsedContentRange("bytes 0-1/2"_s).isValid());
    ASSERT_TRUE(ParsedContentRange("bytes 0-1/*"_s).isValid());
    ASSERT_EQ(0, ParsedContentRange("bytes 0-1/2"_s).firstBytePosition());
    ASSERT_EQ(1, ParsedContentRange("bytes 0-1/2"_s).lastBytePosition());
    ASSERT_EQ(2, ParsedContentRange("bytes 0-1/2"_s).instanceLength());
    ASSERT_EQ(ParsedContentRange::unknownLength, ParsedContentRange("bytes 0-1/*"_s).instanceLength());

    // Whitespace errors
    ASSERT_FALSE(ParsedContentRange("bytes  0-1/*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0 -1/*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0- 1/*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1 /*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/ *"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/* "_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/ 2"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/2 "_s).isValid());

    // Non-digit errors
    ASSERT_FALSE(ParsedContentRange("bytes abcd-1/2"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-abcd/2"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/abcd"_s).isValid());

    // Range requirement errors
    ASSERT_FALSE(ParsedContentRange("bytes 1-0/2"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-2/1"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 2/0-1"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("abcd 0/1-2"_s).isValid());

    // Negative value errors
    ASSERT_FALSE(ParsedContentRange("bytes -0-1/*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes -1/*"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0--0/2"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 0-1/-2"_s).isValid());

    // Edge cases
    ASSERT_TRUE(ParsedContentRange("bytes 9223372036854775805-9223372036854775806/9223372036854775807"_s).isValid());
    ASSERT_FALSE(ParsedContentRange("bytes 9223372036854775808-9223372036854775809/9223372036854775810"_s).isValid());
}

TEST(WebCore, ParsedContentRangeFromValues)
{
    ASSERT_TRUE(ParsedContentRange(0, 1, 2).isValid());
    ASSERT_TRUE(ParsedContentRange(0, 1, ParsedContentRange::unknownLength).isValid());
    ASSERT_FALSE(ParsedContentRange().isValid());
    ASSERT_FALSE(ParsedContentRange(1, 0, 2).isValid());
    ASSERT_FALSE(ParsedContentRange(0, 2, 1).isValid());
    ASSERT_FALSE(ParsedContentRange(0, 0, 0).isValid());
    ASSERT_FALSE(ParsedContentRange(-1, 1, 2).isValid());
    ASSERT_FALSE(ParsedContentRange(0, -1, 2).isValid());
    ASSERT_FALSE(ParsedContentRange(0, 1, -2).isValid());
    ASSERT_FALSE(ParsedContentRange(-2, -1, 2).isValid());
}

TEST(WebCore, ParsedContentRangeToString)
{
    ASSERT_STREQ("bytes 0-1/2", ParsedContentRange(0, 1, 2).headerValue().utf8().data());
    ASSERT_STREQ("bytes 0-1/*", ParsedContentRange(0, 1, ParsedContentRange::unknownLength).headerValue().utf8().data());
    ASSERT_STREQ("", ParsedContentRange().headerValue().utf8().data());
}

TEST(WebCore, ParsedRequestRange)
{
    Vector<String> failureCases {
        { },
        emptyString(),
        "abc"_s,
        "bytes="_s,
        "bytes=-"_s,
        "bytes=abc-"_s,
        "bytes=1-abc"_s,
        "bytes=2-1"_s,
        "bytes=1-"_s,
        "bytes=-1"_s,
        "bytes=1-999999999999999999999999"_s
    };
    for (const auto& input : failureCases)
        EXPECT_EQ(std::nullopt, ParsedRequestRange::parse(input));

    auto compare = [] (const String& input, std::optional<size_t> begin, std::optional<size_t> end) {
        auto range = ParsedRequestRange::parse(input);
        EXPECT_NE(std::nullopt, range);
        
    };
    compare("bytes=1-1"_s, 1, 1);
    compare("bytes=1-2"_s, 1, 2);
}

}