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/*
* Copyright (c) 2021, Max Wipfli <max.wipfli@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <LibCore/File.h>
#include <LibWeb/HTML/Parser/HTMLTokenizer.h>
using Tokenizer = Web::HTML::HTMLTokenizer;
using Token = Web::HTML::HTMLToken;
#define BEGIN_ENUMERATION(tokens) \
auto current_token = (tokens).begin(); \
[[maybe_unused]] Token* last_token;
#define END_ENUMERATION() \
EXPECT(current_token.is_end());
#define NEXT_TOKEN() \
last_token = &*current_token; \
++current_token;
#define EXPECT_START_TAG_TOKEN(_tag_name) \
EXPECT_EQ(current_token->type(), Token::Type::StartTag); \
EXPECT_EQ(current_token->tag_name(), #_tag_name); \
NEXT_TOKEN();
#define EXPECT_END_TAG_TOKEN(_tag_name) \
EXPECT_EQ(current_token->type(), Token::Type::EndTag); \
EXPECT_EQ(current_token->tag_name(), #_tag_name); \
NEXT_TOKEN();
#define EXPECT_END_OF_FILE_TOKEN() \
EXPECT_EQ(current_token->type(), Token::Type::EndOfFile); \
NEXT_TOKEN();
#define EXPECT_CHARACTER_TOKEN(character) \
EXPECT_EQ(current_token->type(), Token::Type::Character); \
EXPECT_EQ(current_token->code_point(), (u32)(character)); \
NEXT_TOKEN();
#define EXPECT_CHARACTER_TOKENS(string) \
for (auto c : #string##sv) { \
EXPECT_CHARACTER_TOKEN(c); \
}
#define EXPECT_COMMENT_TOKEN() \
EXPECT_EQ(current_token->type(), Token::Type::Comment); \
NEXT_TOKEN();
#define EXPECT_DOCTYPE_TOKEN() \
EXPECT_EQ(current_token->type(), Token::Type::DOCTYPE); \
NEXT_TOKEN();
#define EXPECT_TAG_TOKEN_ATTRIBUTE(name, value) \
VERIFY(last_token); \
EXPECT_EQ(last_token->attribute(#name), value);
#define EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(count) \
VERIFY(last_token); \
EXPECT_EQ(last_token->attribute_count(), (size_t)(count));
static Vector<Token> run_tokenizer(StringView input)
{
Vector<Token> tokens;
Tokenizer tokenizer { input, "UTF-8"sv };
while (true) {
auto maybe_token = tokenizer.next_token();
if (!maybe_token.has_value())
break;
tokens.append(maybe_token.release_value());
}
return tokens;
}
// FIXME: It's not very nice to rely on the format of HTMLToken::to_string() to stay the same.
static u32 hash_tokens(Vector<Token> const& tokens)
{
StringBuilder builder;
for (auto& token : tokens)
builder.append(token.to_deprecated_string());
return (u32)builder.string_view().hash();
}
TEST_CASE(empty)
{
auto tokens = run_tokenizer(""sv);
BEGIN_ENUMERATION(tokens);
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(basic)
{
auto tokens = run_tokenizer("<html><head></head><body></body></html>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(html);
EXPECT_START_TAG_TOKEN(head);
EXPECT_END_TAG_TOKEN(head);
EXPECT_START_TAG_TOKEN(body);
EXPECT_END_TAG_TOKEN(body);
EXPECT_END_TAG_TOKEN(html);
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(basic_with_text)
{
auto tokens = run_tokenizer("<p>This is some text.</p>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_CHARACTER_TOKENS(This is some text.);
EXPECT_END_TAG_TOKEN(p);
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(unquoted_attributes)
{
auto tokens = run_tokenizer("<p foo=bar>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(1);
EXPECT_TAG_TOKEN_ATTRIBUTE(foo, "bar");
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(single_quoted_attributes)
{
auto tokens = run_tokenizer("<p foo='bar'>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(1);
EXPECT_TAG_TOKEN_ATTRIBUTE(foo, "bar");
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(double_quoted_attributes)
{
auto tokens = run_tokenizer("<p foo=\"bar\">"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(1);
EXPECT_TAG_TOKEN_ATTRIBUTE(foo, "bar");
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(multiple_attributes)
{
auto tokens = run_tokenizer("<p foo=\"bar\" baz=foobar foo2=\"bar2\">"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(3);
EXPECT_TAG_TOKEN_ATTRIBUTE(foo, "bar");
EXPECT_TAG_TOKEN_ATTRIBUTE(baz, "foobar");
EXPECT_TAG_TOKEN_ATTRIBUTE(foo2, "bar2");
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(character_reference_in_attribute)
{
auto tokens = run_tokenizer("<p foo=a&b bar='a&b' baz=\"a&b\">"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_TAG_TOKEN_ATTRIBUTE_COUNT(3);
EXPECT_TAG_TOKEN_ATTRIBUTE(foo, "a&b");
EXPECT_TAG_TOKEN_ATTRIBUTE(bar, "a&b");
EXPECT_TAG_TOKEN_ATTRIBUTE(baz, "a&b");
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(comment)
{
auto tokens = run_tokenizer("<p><!-- This is a comment --></p>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_START_TAG_TOKEN(p);
EXPECT_COMMENT_TOKEN();
EXPECT_END_TAG_TOKEN(p);
EXPECT_END_OF_FILE_TOKEN();
END_ENUMERATION();
}
TEST_CASE(doctype)
{
auto tokens = run_tokenizer("<!DOCTYPE html><html></html>"sv);
BEGIN_ENUMERATION(tokens);
EXPECT_DOCTYPE_TOKEN();
EXPECT_START_TAG_TOKEN(html);
EXPECT_END_TAG_TOKEN(html);
}
// NOTE: This relies on the format of HTMLToken::to_string() staying the same.
// If that changes, or something is added to the test HTML, the hash needs to be adjusted.
TEST_CASE(regression)
{
// This makes sure that the tests will run both on target and in Lagom.
#ifdef AK_OS_SERENITY
StringView path = "/usr/Tests/LibWeb/tokenizer-test.html"sv;
#else
StringView path = "tokenizer-test.html"sv;
#endif
auto file = MUST(Core::File::open(path, Core::File::OpenMode::Read));
auto file_size = MUST(file->size());
auto content = MUST(ByteBuffer::create_uninitialized(file_size));
MUST(file->read_until_filled(content.bytes()));
DeprecatedString file_contents { content.bytes() };
auto tokens = run_tokenizer(file_contents);
u32 hash = hash_tokens(tokens);
EXPECT_EQ(hash, 710375345u);
}
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