1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html b/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html
new file mode 100644
index 000000000..8956b8709
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/idle-callbacks/cancel-invoked.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>cancelling idle requests</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="log"></div>
+<script>
+  test(function (t) {
+    window.cancelIdleCallback(42);
+    assert_true(true);
+  }, "cancelIdleCallback does nothing if there is no callback with the given handle");
+
+  async_test(function (t) {
+    assert_false(document.hidden, "document.hidden must exist and be false to run this test properly");
+    var neverCalled = true;
+    var handle = window.requestIdleCallback(function () {
+      neverCalled = false;
+    });
+    window.cancelIdleCallback(handle);
+
+    t.step_timeout(function() {
+      assert_true(neverCalled);
+      t.done();
+    }, 2000);
+  }, "A cancelled callback is never invoked");
+</script>