tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_inspector-iframe.js (2820B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 const BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF =
      7  "devtools.testing.bypass-walker-children-iframe-guard";
      8 
      9 add_task(async function testIframe() {
     10  info("Check that dedicated walker is used for retrieving iframe children");
     11 
     12  const TEST_URI = `https://example.com/document-builder.sjs?html=${encodeURIComponent(`
     13  <h1>Test iframe</h1>
     14  <iframe src="https://example.com/document-builder.sjs?html=Hello"></iframe>
     15 `)}`;
     16 
     17  const { walker } = await initInspectorFront(TEST_URI);
     18  const iframeNodeFront = await walker.querySelector(walker.rootNode, "iframe");
     19 
     20  is(
     21    iframeNodeFront.useChildTargetToFetchChildren,
     22    true,
     23    "useChildTargetToFetchChildren has expected value"
     24  );
     25  is(
     26    iframeNodeFront.numChildren,
     27    1,
     28    "numChildren is set to 1 (for the #document node)"
     29  );
     30 
     31  const res = await walker.children(iframeNodeFront);
     32  is(
     33    res.nodes.length,
     34    1,
     35    "Retrieving the iframe children return an array with one element"
     36  );
     37  const documentNodeFront = res.nodes[0];
     38  is(
     39    documentNodeFront.nodeName,
     40    "#document",
     41    "The child is the #document element"
     42  );
     43  Assert.notStrictEqual(
     44    documentNodeFront.walkerFront,
     45    walker,
     46    "The child walker is different from the top level document one"
     47  );
     48  is(
     49    documentNodeFront.parentNode(),
     50    iframeNodeFront,
     51    "The child parent was set to the original iframe nodeFront"
     52  );
     53 });
     54 
     55 add_task(async function testIframeBlockedByCSP() {
     56  info("Check that iframe blocked by CSP don't have any children");
     57 
     58  const TEST_URI = `https://example.com/document-builder.sjs?html=${encodeURIComponent(`
     59  <h1>Test CSP-blocked iframe</h1>
     60  <iframe src="https://example.org/document-builder.sjs?html=Hello"></iframe>
     61 `)}&headers=content-security-policy:default-src 'self'`;
     62 
     63  const { walker } = await initInspectorFront(TEST_URI);
     64  const iframeNodeFront = await walker.querySelector(walker.rootNode, "iframe");
     65 
     66  is(
     67    iframeNodeFront.useChildTargetToFetchChildren,
     68    false,
     69    "useChildTargetToFetchChildren is false"
     70  );
     71  is(iframeNodeFront.numChildren, 0, "numChildren is set to 0");
     72 
     73  info("Test calling WalkerFront#children with the safe guard removed");
     74  await pushPref(BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF, true);
     75 
     76  let res = await walker.children(iframeNodeFront);
     77  is(
     78    res.nodes.length,
     79    0,
     80    "Retrieving the iframe children return an empty array"
     81  );
     82 
     83  info("Test calling WalkerFront#children again, but with the safe guard");
     84  Services.prefs.clearUserPref(BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF);
     85  res = await walker.children(iframeNodeFront);
     86  is(
     87    res.nodes.length,
     88    0,
     89    "Retrieving the iframe children return an empty array"
     90  );
     91 });