[tbb-commits] [tor-browser/tor-browser-38.3.0esr-5.5-2] Regression tests for Bug #17207: Hide mime types and plugins when resisting fingerprinting

Fri Oct 30 21:28:36 UTC 2015

commit 5578785b6c12ff62b5a2cdcc3d2f5c9762af6c5c
Author: Arthur Edelstein <arthuredelstein at gmail.com>
Date:   Fri Oct 16 17:10:57 2015 -0700

    Regression tests for Bug #17207: Hide mime types and plugins when resisting fingerprinting
---
 dom/base/test/mochitest.ini          |    1 +
 dom/base/test/test_tor_bug17207.html |   49 ++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/dom/base/test/mochitest.ini b/dom/base/test/mochitest.ini
index 133348e..6a8c334 100644
--- a/dom/base/test/mochitest.ini
+++ b/dom/base/test/mochitest.ini
@@ -739,6 +739,7 @@ skip-if = toolkit == 'android' || e10s #RANDOM
 [test_title.html]
 [test_tor_bug15502.html]
 [test_tor_bug15703.html]
+[test_tor_bug17207.html]
 [test_treewalker_nextsibling.xml]
 [test_viewport_scroll.html]
 [test_viewsource_forbidden_in_object.html]
diff --git a/dom/base/test/test_tor_bug17207.html b/dom/base/test/test_tor_bug17207.html
new file mode 100644
index 0000000..4ab0a0d
--- /dev/null
+++ b/dom/base/test/test_tor_bug17207.html
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugs.torproject.org/17207
+-->
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  <title>Test for Tor Browser Bug 17207</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<p id="display"></p>
+<div id="content"></div>
+
+<script class="testbody" type="application/javascript;version=1.7">
+SimpleTest.waitForExplicitFinish();
+
+// __setPref(key, value)__.
+// Set a pref value asynchronously, returning a promise that resolves
+// when it succeeds.
+let setPref = function* (key, value) {
+  return new Promise(function(resolve, reject) {
+    SpecialPowers.pushPrefEnv({"set": [[key, value]]}, resolve);
+  });
+};
+
+// Run a test to see that we don't expose the supported mimeTypes
+// or installed plugins when "privacy.resistFingerprinting" is active.
+spawnTask(function* () {
+  yield setPref("privacy.resistFingerprinting", true);
+  is(navigator.mimeTypes["application/pdf"], undefined, "Don't reveal mime types");
+  is(navigator.mimeTypes.length, 0, "navigator.mimeTypes.length should be 0");
+  yield setPref("privacy.resistFingerprinting", false);
+  isnot(navigator.mimeTypes["application/pdf"], undefined),
+  // TODO: In Firefox 38, mimeTypes are not enumerable because of https://bugzilla.mozilla.org/757726.
+  // But mimeType enumeration was subsequently brought back by https://bugzilla.mozilla.org/1169945.
+  // So we'll need to include the following line in mozilla-central or TBB/FF45ESR:
+  // isnot(navigator.mimeTypes.length, 0, "navigator.mimeTypes.length should not be nonzero");
+  // TODO: We don't have any plugins in Tor Browser, but we will need to implement
+  // similar tests for plugins in mainline Firefox.
+  SimpleTest.finish();
+});
+
+</script>
+
+</body>
+</html>

