1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/reset/2d.reset.state.global_alpha.html b/testing/web-platform/tests/html/canvas/offscreen/reset/2d.reset.state.global_alpha.html
new file mode 100644
index 0000000000..fe87aedf84
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/reset/2d.reset.state.global_alpha.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.reset.state.global_alpha</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.reset.state.global_alpha</h1>
+<p class="desc">check that the state is reset</p>
+
+
+<script>
+var t = async_test("check that the state is reset");
+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');
+
+  const default_value = ctx.globalAlpha;
+
+  ctx.globalAlpha = 0.5;
+  _assert(ctx.globalAlpha == 0.5, "ctx.globalAlpha == 0.5");
+
+  ctx.reset();
+  _assert(ctx.globalAlpha == default_value, "ctx.globalAlpha == default_value");
+  t.done();
+
+});
+</script>