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-rw-r--r--testing/web-platform/tests/webmessaging/with-ports/023.html11
1 files changed, 11 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/with-ports/023.html b/testing/web-platform/tests/webmessaging/with-ports/023.html
new file mode 100644
index 0000000000..e2569a8463
--- /dev/null
+++ b/testing/web-platform/tests/webmessaging/with-ports/023.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<title>null ports</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+test(function(t) {
+ assert_throws_js(TypeError, () => postMessage('', '*', null));
+});
+</script>
+