mozilla
diff --git a/‎testing/web-platform/tests/touch-events/expose-legacy-touch-event-apis.html
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+15 b/‎testing/web-platform/tests/touch-events/expose-legacy-touch-event-apis.html
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+15
diff --git a/‎testing/web-platform/tests/touch-events/touch-globaleventhandler-interface.html
Copy file name to clipboardExpand all lines: testing/web-platform/tests/touch-events/touch-globaleventhandler-interface.html
+5 b/‎testing/web-platform/tests/touch-events/touch-globaleventhandler-interface.html
Copy file name to clipboardExpand all lines: testing/web-platform/tests/touch-events/touch-globaleventhandler-interface.html
+5
@@ -0,0 +1,15 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Expose legacy touch event APIs</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+const exposeLegacyTouchEventAPIs = 'ontouchstart' in document;
+for (const eventHandler of ['ontouchstart', 'ontouchmove', 'ontouchend', 'ontouchcancel']) {
+  for (const eventTarget of [window, HTMLElement.prototype, SVGElement.prototype, Document.prototype]) {
+    test(() => {
+      assert_equals(eventHandler in eventTarget, exposeLegacyTouchEventAPIs);
+    }, `'${eventHandler}' in ${eventTarget}`);
+  }
+}
+</script>
@@ -3,7 +3,11 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
+function supportsTouchEvents() {
+  assert_implements_optional('ontouchstart' in document, "'expose legacy touch event APIs'");
+}
 test(function() {
+    supportsTouchEvents();
     var touch_event_list = ['ontouchstart', 'ontouchmove', 'ontouchend', 'ontouchcancel'];
     var global_event_handlers = [window, HTMLElement.prototype, SVGElement.prototype, Document.prototype];
     for (var i in touch_event_list) {
@@ -14,6 +18,7 @@
 }, "Touch events in GlobalEventHandlers");
 
 test(function() {
+    supportsTouchEvents();
     var touch_event_list = ['ontouchstart', 'ontouchmove', 'ontouchend', 'ontouchcancel'];
     var global_event_handlers = [window, HTMLElement.prototype, SVGElement.prototype, Document.prototype];
     for (var i in touch_event_list) {