1 files changed, 84 insertions, 0 deletions
diff --git a/toolkit/components/glean/tests/browser/browser_fog_gmp.js b/toolkit/components/glean/tests/browser/browser_fog_gmp.js
new file mode 100644
index 0000000000..f61c3806f1
--- /dev/null
+++ b/toolkit/components/glean/tests/browser/browser_fog_gmp.js
@@ -0,0 +1,84 @@
+/* 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",
+      "https://example.org"
+    ) + fileName
+  );
+}
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.eme.enabled", true]],
+  });
+
+  await BrowserTestUtils.withNewTab(
+    GetTestWebBasedURL("empty_file.html"),
+    async function (browser) {
+      await SpecialPowers.spawn(browser, [], async function () {
+        try {
+          let config = [
+            {
+              initDataTypes: ["webm"],
+              videoCapabilities: [{ contentType: 'video/webm; codecs="vp9"' }],
+            },
+          ];
+          let access = await content.navigator.requestMediaKeySystemAccess(
+            "org.w3.clearkey",
+            config
+          );
+
+          content.mediaKeys = await access.createMediaKeys();
+          info("got media keys, which should ensure a GMP process exists");
+        } catch (ex) {
+          ok(false, ex.toString());
+        }
+      });
+
+      ok(
+        (await ChromeUtils.requestProcInfo()).children.some(
+          p => p.type == "gmpPlugin"
+        ),
+        "Found the GMP process."
+      );
+
+      Services.fog.testResetFOG();
+
+      is(
+        null,
+        Glean.testOnlyIpc.aCounter.testGetValue(),
+        "Ensure we begin without value."
+      );
+
+      await TestUtils.waitForCondition(async () => {
+        try {
+          await Services.fog.testTriggerMetrics(
+            Ci.nsIXULRuntime.PROCESS_TYPE_GMPLUGIN
+          );
+          return true;
+        } catch (e) {
+          info(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_GMPLUGIN,
+        "Ensure the GMP-process-set value shows up in the parent process."
+      );
+    }
+  );
+});