[PTZ] Deny mandatory PTZ constraints in basic getUserMedia constraints

This PR makes sure required PTZ constraints in the basic constraint set are denied (and throw a TypeError) and PTZ capability constraints ({ zoom: true } etc.) are ideal in the basic constraint set. Therefore, a PTZ constraint in the basic set cannot cause getUserMedia() to fail conditionally. Spec: w3c/mediacapture-image#261 w3c/mediacapture-main#707 Bug: 934063 Change-Id: I7324ae32b064dbf3b89325166834e2694eca593b
web-platform-tests · Sep 28, 2020 · 0b383a5 · 0b383a5
1 parent cdd3334
commit 0b383a5
Showing 1 changed file with 26 additions and 0 deletions.
diff --git a/mediacapture-image/getusermedia.https.html b/mediacapture-image/getusermedia.https.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>getUserMedia</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+"use strict";
+
+  [
+    { video: { pan: { min: 1 } } },
+    { video: { pan: { max: 1 } } },
+    { video: { pan: { exact: 1 } } },
+    { video: { tilt: { min: 1 } } },
+    { video: { tilt: { max: 1 } } },
+    { video: { tilt: { exact: 1 } } },
+    { video: { zoom: { min: 1 } } },
+    { video: { zoom: { max: 1 } } },
+    { video: { zoom: { exact: 1 } } }
+  ].forEach(constraints =>
+    promise_test(t => {
+      const promise = navigator.mediaDevices.getUserMedia(constraints);
+      return promise_rejects_js(t, TypeError, promise);
+    }, `getUserMedia(${JSON.stringify(constraints)}) must fail with TypeError`)
+  );
+
+</script>