1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html
new file mode 100644
index 0000000000..845f823e7f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.pattern.image.undefined</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.pattern.image.undefined</h1>
+<p class="desc"></p>
+
+<p class="notes">Defined in "Web IDL" (draft)
+<script>
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.createPattern(undefined, 'repeat'); });
+  t.done();
+
+});
+</script>