diff -r 000000000000 -r 6474c204b198 browser/devtools/webconsole/test/browser_webconsole_allow_mixedcontent_securityerrors.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webconsole/test/browser_webconsole_allow_mixedcontent_securityerrors.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,72 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// The test loads a web page with mixed active and display content
+// on it while the "block mixed content" settings are _off_.
+// It then checks that the loading mixed content warning messages
+// are logged to the console and have the correct "Learn More"
+// url appended to them.
+// Bug 875456 - Log mixed content messages from the Mixed Content
+// Blocker to the Security Pane in the Web Console
+
+const TEST_URI = "https://example.com/browser/browser/devtools/webconsole/test/test-mixedcontent-securityerrors.html";
+const LEARN_MORE_URI = "https://developer.mozilla.org/docs/Security/MixedContent";
+
+function test()
+{
+  SpecialPowers.pushPrefEnv({"set":
+      [["security.mixed_content.block_active_content", false],
+       ["security.mixed_content.block_display_content", false]
+  ]}, loadingMixedContentTest);
+}
+
+function loadingMixedContentTest()
+{
+  addTab(TEST_URI);
+  browser.addEventListener("load", function onLoad(aEvent) {
+    browser.removeEventListener(aEvent.type, onLoad, true);
+    openConsole(null, function testSecurityErrorLogged (hud) {
+      waitForMessages({
+        webconsole: hud,
+        messages: [
+          {
+            name: "Logged mixed active content",
+            text: "Loading mixed (insecure) active content on a secure page \"http://example.com/\"",
+            category: CATEGORY_SECURITY,
+            severity: SEVERITY_WARNING,
+            objects: true,
+          },
+          {
+            name: "Logged mixed passive content - image",
+            text: "Loading mixed (insecure) display content on a secure page \"http://example.com/tests/image/test/mochitest/blue.png\"",
+            category: CATEGORY_SECURITY,
+            severity: SEVERITY_WARNING,
+            objects: true,
+          },
+        ],
+      }).then((results) => testClickOpenNewTab(hud, results));
+    });
+  }, true);
+}
+
+function testClickOpenNewTab(hud, results) {
+  let warningNode = results[0].clickableElements[0];
+  ok(warningNode, "link element");
+  ok(warningNode.classList.contains("learn-more-link"), "link class name");
+
+  // Invoke the click event and check if a new tab would open to the correct page.
+  let linkOpened = false;
+  let oldOpenUILinkIn = window.openUILinkIn;
+  window.openUILinkIn = function(aLink) {
+    if (aLink == LEARN_MORE_URI) {
+      linkOpened = true;
+    }
+  }
+
+  EventUtils.synthesizeMouse(warningNode, 2, 2, {},
+                             warningNode.ownerDocument.defaultView);
+  ok(linkOpened, "Clicking the Learn More Warning node opens the desired page");
+  window.openUILinkIn = oldOpenUILinkIn;
+
+  finishTest();
+}