TestXMLSerializerNoBreakLink.cpp

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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 "nsIDocumentEncoder.h"

#include "nsString.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/dom/Document.h"

#include "mozilla/dom/DOMParser.h"

using namespace mozilla;

using namespace mozilla::dom;

// Test that serialising some DOM doesn't destroy links by word-wrapping long

// href values containing spaces.

TEST(TestXMLSerializerNoBreakLink, TestXMLSerializerNoBreakLinkMain)

  // Build up a stupidly-long URL with spaces. Default is to wrap at column

  // 72, so we want to exceed that.

  nsString longURL = u"http://www.example.com/link with spaces"_ns;

  for (int i = 1; i < 125; ++i) {

    longURL.Append(u' ');

    longURL.Append(IntToTString<char16_t>(i));

  nsString htmlInput =

      u"<html><head>"

      "<meta charset=\"utf-8\">"

      "</head><body>Hello Thunderbird! <a href=\""_ns +

      longURL + u"\">Link</a></body></html>"_ns;

  // Parse HTML into a Document.

  nsCOMPtr<Document> document;

    IgnoredErrorResult rv;

    RefPtr<DOMParser> parser = DOMParser::CreateWithoutGlobal(rv);

    ASSERT_FALSE(rv.Failed());

    document = parser->ParseFromString(htmlInput, SupportedType::Text_html, rv);

    ASSERT_FALSE(rv.Failed());

  // Serialize back in a variety of flavours and check the URL survives the

  // round trip intact.

  nsCString contentTypes[] = {"text/xml"_ns, "application/xml"_ns,

                              "application/xhtml+xml"_ns, "image/svg+xml"_ns,

                              "text/html"_ns};

  for (auto const& contentType : contentTypes) {

    uint32_t flagsToTest[] = {

        nsIDocumentEncoder::OutputFormatted, nsIDocumentEncoder::OutputWrap,

        nsIDocumentEncoder::OutputFormatted | nsIDocumentEncoder::OutputWrap};

    for (uint32_t flags : flagsToTest) {

      // Serialize doc back to HTML source again.

      nsCOMPtr<nsIDocumentEncoder> encoder =

          do_createDocumentEncoder(contentType.get());

      ASSERT_TRUE(encoder);

      nsresult rv =

          encoder->Init(document, NS_ConvertASCIItoUTF16(contentType), flags);

      ASSERT_TRUE(NS_SUCCEEDED(rv));

      nsString parsed;

      rv = encoder->EncodeToString(parsed);

      ASSERT_TRUE(NS_SUCCEEDED(rv));

      // URL is intact?

      EXPECT_TRUE(parsed.Find(longURL) != kNotFound);