1 files changed, 82 insertions, 0 deletions
diff --git a/browser/base/content/test/webrtc/browser_devices_get_user_media_by_device_id.js b/browser/base/content/test/webrtc/browser_devices_get_user_media_by_device_id.js
new file mode 100644
index 0000000000..3e5ca0668a
--- /dev/null
+++ b/browser/base/content/test/webrtc/browser_devices_get_user_media_by_device_id.js
@@ -0,0 +1,82 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_ROOT = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content/",
+  "https://example.com/"
+);
+const TEST_PAGE = TEST_ROOT + "get_user_media.html";
+
+/**
+ * Utility function that should be called after a request for a device
+ * has been made. This function will allow sharing that device, and then
+ * immediately close the stream.
+ */
+async function allowStreamsThenClose() {
+  let observerPromise1 = expectObserverCalled("getUserMedia:response:allow");
+  let observerPromise2 = expectObserverCalled("recording-device-events");
+  await promiseMessage("ok", () => {
+    PopupNotifications.panel.firstElementChild.button.click();
+  });
+  await observerPromise1;
+  await observerPromise2;
+
+  await closeStream();
+}
+
+/**
+ * Tests that if a site requests a particular device by ID, that
+ * the Permission Panel menulist for that device shows only that
+ * device and is disabled.
+ */
+add_task(async function test_get_user_media_by_device_id() {
+  let prefs = [
+    [PREF_PERMISSION_FAKE, true],
+    [PREF_AUDIO_LOOPBACK, ""],
+    [PREF_VIDEO_LOOPBACK, ""],
+    [PREF_FAKE_STREAMS, true],
+    [PREF_FOCUS_SOURCE, false],
+  ];
+  await SpecialPowers.pushPrefEnv({ set: prefs });
+
+  let devices = await navigator.mediaDevices.enumerateDevices();
+  let audioId = devices
+    .filter(d => d.kind == "audioinput")
+    .map(d => d.deviceId)[0];
+  let videoId = devices
+    .filter(d => d.kind == "videoinput")
+    .map(d => d.deviceId)[0];
+
+  await BrowserTestUtils.withNewTab(TEST_PAGE, async browser => {
+    let promise = promisePopupNotificationShown("webRTC-shareDevices");
+    let observerPromise = expectObserverCalled("getUserMedia:request");
+    await promiseRequestDevice({ deviceId: { exact: audioId } });
+    await promise;
+    await observerPromise;
+    checkDeviceSelectors(["microphone"]);
+
+    await allowStreamsThenClose();
+
+    promise = promisePopupNotificationShown("webRTC-shareDevices");
+    observerPromise = expectObserverCalled("getUserMedia:request");
+    await promiseRequestDevice(false, { deviceId: { exact: videoId } });
+    await promise;
+    await observerPromise;
+    checkDeviceSelectors(["camera"]);
+
+    await allowStreamsThenClose();
+
+    promise = promisePopupNotificationShown("webRTC-shareDevices");
+    observerPromise = expectObserverCalled("getUserMedia:request");
+    await promiseRequestDevice(
+      { deviceId: { exact: audioId } },
+      { deviceId: { exact: videoId } }
+    );
+    await promise;
+    await observerPromise;
+    checkDeviceSelectors(["microphone", "camera"]);
+    await allowStreamsThenClose();
+  });
+});