1 files changed, 24 insertions, 0 deletions
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js b/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js
new file mode 100644
index 0000000000..0a237f7d43
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js
@@ -0,0 +1,24 @@
+// Set permissions for camera and microphone using Web Driver
+// Status can be one of "granted" or "denied"
+// Scope take values from permission names
+async function setMediaPermission(status="granted", scope=["camera", "microphone"]) {
+  try {
+    for (let s of scope) {
+      await test_driver.set_permission({ name: s }, status);
+    }
+  } catch (e) {
+    const noSetPermissionSupport = typeof e === "string" && e.match(/set_permission not implemented/);
+    if (!(noSetPermissionSupport ||
+          (e instanceof Error && e.message.match("unimplemented")) )) {
+      throw e;
+    }
+    // Web Driver not implemented action
+    // FF: https://bugzilla.mozilla.org/show_bug.cgi?id=1524074
+
+    // with current WPT runners, will default to granted state for FF and Safari
+    // throw if status!="granted" to invalidate test results
+    if (status === "denied") {
+      assert_implements_optional(!noSetPermissionSupport, "Unable to set permission to denied for this test");
+    }
+  }
+}