test_htmlserializer.js

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/* 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/. */

add_task(async function testAttrsOutsideBodyWithRawBodyOnly() {

  // Create a simple HTML document in which the header contains a tag with set

  // attributes

  const htmlString = `<html><head><link rel="stylesheet" href="foo"/></head><body>some content</body></html>`;

  const parser = new DOMParser();

  const doc = parser.parseFromString(htmlString, "text/html");

  // Sanity check

  const linkElems = doc.head.getElementsByTagName("link");

  Assert.equal(

    linkElems.length,

1,

    "document header should contain one link element"

);

  Assert.equal(

    linkElems[0].rel,

    "stylesheet",

    "link element should have rel attribute set"

);

  // Verify that the combination of raw output and body-only does not allow

  // attributes from header elements to creep into the output string

  const encoder = Cu.createDocumentEncoder("text/html");

  encoder.init(

    doc,

    "text/html",

    Ci.nsIDocumentEncoder.OutputRaw | Ci.nsIDocumentEncoder.OutputBodyOnly

);

  const result = encoder.encodeToString();

  Assert.equal(

    result,

    "<body>some content</body>",

    "output should not contain attributes from head elements"

);

});

add_task(async function testAttrsInsideBodyWithRawBodyOnly() {

  // Create a simple HTML document in which the body contains a tag with set

  // attributes

  const htmlString = `<html><head><link rel="stylesheet" href="foo"/></head><body><span id="foo">some content</span></body></html>`;

  const parser = new DOMParser();

  const doc = parser.parseFromString(htmlString, "text/html");

  // Sanity check

  const spanElem = doc.getElementById("foo");

  Assert.ok(spanElem, "should be able to get span element by ID");

  // Verify that the combination of raw output and body-only does not strip

  // tag attributes inside the body

  const encoder = Cu.createDocumentEncoder("text/html");

  encoder.init(

    doc,

    "text/html",

    Ci.nsIDocumentEncoder.OutputRaw | Ci.nsIDocumentEncoder.OutputBodyOnly

);

  const result = encoder.encodeToString();

  Assert.equal(

    result,

    `<body><span id="foo">some content</span></body>`,

    "output should not contain attributes from head elements"

);

});