diff -r 000000000000 -r 6474c204b198 browser/devtools/webconsole/test/browser_webconsole_count.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webconsole/test/browser_webconsole_count.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,77 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that console.count() counts as expected. See bug 922208.
+
+const TEST_URI = "http://example.com/browser/browser/devtools/webconsole/test/test-console-count.html";
+
+function test() {
+  Task.spawn(runner).then(finishTest);
+
+  function* runner() {
+    const {tab} = yield loadTab(TEST_URI);
+    const hud = yield openConsole(tab);
+
+    let button = content.document.querySelector("#local");
+    ok(button, "we have the local-tests button");
+    EventUtils.sendMouseEvent({ type: "click" }, button, content);
+    let messages = [];
+    [
+      "start",
+      "<no label>: 2",
+      "console.count() testcounter: 1",
+      "console.count() testcounter: 2",
+      "console.count() testcounter: 3",
+      "console.count() testcounter: 4",
+      "end"
+    ].forEach(function (msg) {
+      messages.push({
+        text: msg,
+        category: CATEGORY_WEBDEV,
+        severity: SEVERITY_LOG
+      });
+    });
+    messages.push({
+      name: "Three local counts with no label and count=1",
+      text: "<no label>: 1",
+      category: CATEGORY_WEBDEV,
+      severity: SEVERITY_LOG,
+      count: 3
+    });
+    yield waitForMessages({
+      webconsole: hud,
+      messages: messages
+    });
+
+    hud.jsterm.clearOutput();
+
+    button = content.document.querySelector("#external");
+    ok(button, "we have the external-tests button");
+    EventUtils.sendMouseEvent({ type: "click" }, button, content);
+    messages = [];
+    [
+      "start",
+      "console.count() testcounter: 5",
+      "console.count() testcounter: 6",
+      "end"
+    ].forEach(function (msg) {
+      messages.push({
+        text: msg,
+        category: CATEGORY_WEBDEV,
+        severity: SEVERITY_LOG
+      });
+    });
+    messages.push({
+      name: "Two external counts with no label and count=1",
+      text: "<no label>: 1",
+      category: CATEGORY_WEBDEV,
+      severity: SEVERITY_LOG,
+      count: 2
+    });
+    yield waitForMessages({
+      webconsole: hud,
+      messages: messages
+    });
+  }
+}