TestParser.cpp - mozsearch

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "gtest/gtest.h"

#include "nsCOMPtr.h"

#include "nsString.h"

#include "mozilla/dom/DOMParser.h"

#include "mozilla/dom/Document.h"

#include "nsIDocumentEncoder.h"

#include "mozilla/ErrorResult.h"

// This is a test for mozilla::dom::DOMParser::CreateWithoutGlobal() which was

// implemented for use in Thunderbird's MailNews module.

// int main(int argc, char** argv)

TEST(TestParser, TestParserMain)

  bool allTestsPassed = false;

  constexpr auto htmlInput =

      u"<html><head>"

      "<meta http-equiv=\"content-type\" content=\"text/html; charset=\">"

      "</head><body>Hello <b>Thunderbird!</b></body></html>"_ns;

  do {

    // Parse the HTML source.

    mozilla::IgnoredErrorResult rv2;

    RefPtr<mozilla::dom::DOMParser> parser =

        mozilla::dom::DOMParser::CreateWithoutGlobal(rv2);

    if (rv2.Failed()) break;

    nsCOMPtr<mozilla::dom::Document> document = parser->ParseFromStringInternal(

        htmlInput, mozilla::dom::SupportedType::Text_html, rv2);

    if (rv2.Failed()) break;

    // Serialize it back to HTML source again.

    nsCOMPtr<nsIDocumentEncoder> encoder =

        do_createDocumentEncoder("text/html");

    if (!encoder) break;

    nsresult rv =

        encoder->Init(document, u"text/html"_ns, nsIDocumentEncoder::OutputRaw);

    if (NS_FAILED(rv)) break;

    nsString parsed;

    rv = encoder->EncodeToString(parsed);

    if (NS_FAILED(rv)) break;

    EXPECT_TRUE(parsed.Equals(htmlInput));

    allTestsPassed = true;

  } while (false);

  EXPECT_TRUE(allTestsPassed);