1 files changed, 63 insertions, 0 deletions
diff --git a/toolkit/components/glean/tests/browser/browser_fog_rdd.js b/toolkit/components/glean/tests/browser/browser_fog_rdd.js
new file mode 100644
index 0000000000..caf9a6db1f
--- /dev/null
+++ b/toolkit/components/glean/tests/browser/browser_fog_rdd.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Return a web-based URL for a given file based on the testing directory.
+ * @param {String} fileName
+ *        file that caller wants its web-based url
+ */
+function GetTestWebBasedURL(fileName) {
+  return (
+    getRootDirectory(gTestPath).replace(
+      "chrome://mochitests/content",
+      "http://example.org"
+    ) + fileName
+  );
+}
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.rdd-process.enabled", true]],
+  });
+
+  let url = GetTestWebBasedURL("small-shot.ogg");
+  info(
+    `Opening ${url} in a new tab to trigger the creation of the RDD process`
+  );
+  let tab = BrowserTestUtils.addTab(gBrowser, url);
+
+  await TestUtils.waitForCondition(
+    async () =>
+      (await ChromeUtils.requestProcInfo()).children.some(p => p.type == "rdd"),
+    "waiting to find RDD process."
+  );
+
+  Services.fog.testResetFOG();
+
+  is(
+    undefined,
+    Glean.testOnlyIpc.aCounter.testGetValue(),
+    "Ensure we begin without value."
+  );
+
+  await TestUtils.waitForCondition(async () => {
+    try {
+      await Services.fog.testTriggerMetrics(Ci.nsIXULRuntime.PROCESS_TYPE_RDD);
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }, "waiting until we can successfully send the TestTriggerMetrics IPC.");
+
+  await Services.fog.testFlushAllChildren();
+
+  is(
+    Glean.testOnlyIpc.aCounter.testGetValue(),
+    Ci.nsIXULRuntime.PROCESS_TYPE_RDD,
+    "Ensure the RDD-process-set value shows up in the parent process."
+  );
+
+  BrowserTestUtils.removeTab(tab);
+});