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diff --git a/testing/web-platform/tests/WebIDL/ecmascript-binding/es-exceptions/DOMException-constants.html b/testing/web-platform/tests/WebIDL/ecmascript-binding/es-exceptions/DOMException-constants.html
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+++ b/testing/web-platform/tests/WebIDL/ecmascript-binding/es-exceptions/DOMException-constants.html
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+<!doctype html>
+<meta charset=utf-8>
+<title>DOMException constants</title>
+<link rel=help href="https://heycam.github.io/webidl/#es-DOMException-constructor-object">
+<link rel=help href="https://heycam.github.io/webidl/#es-DOMException-prototype-object">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  // https://www.w3.org/Bugs/Public/show_bug.cgi?id=27732
+  var constants = [
+    "INDEX_SIZE_ERR",
+    "DOMSTRING_SIZE_ERR",
+    "HIERARCHY_REQUEST_ERR",
+    "WRONG_DOCUMENT_ERR",
+    "INVALID_CHARACTER_ERR",
+    "NO_DATA_ALLOWED_ERR",
+    "NO_MODIFICATION_ALLOWED_ERR",
+    "NOT_FOUND_ERR",
+    "NOT_SUPPORTED_ERR",
+    "INUSE_ATTRIBUTE_ERR",
+    "INVALID_STATE_ERR",
+    "SYNTAX_ERR",
+    "INVALID_MODIFICATION_ERR",
+    "NAMESPACE_ERR",
+    "INVALID_ACCESS_ERR",
+    "VALIDATION_ERR",
+    "TYPE_MISMATCH_ERR",
+    "SECURITY_ERR",
+    "NETWORK_ERR",
+    "ABORT_ERR",
+    "URL_MISMATCH_ERR",
+    "QUOTA_EXCEEDED_ERR",
+    "TIMEOUT_ERR",
+    "INVALID_NODE_TYPE_ERR",
+    "DATA_CLONE_ERR"
+  ]
+  var objects = [
+    [DOMException, "DOMException constructor object"],
+    [DOMException.prototype, "DOMException prototype object"]
+  ]
+  constants.forEach(function(name, i) {
+    objects.forEach(function(o) {
+      var object = o[0], description = o[1];
+      test(function() {
+        assert_equals(object[name], i + 1, name)
+        assert_own_property(object, name)
+        var pd = Object.getOwnPropertyDescriptor(object, name)
+        assert_false("get" in pd, "property has getter")
+        assert_false("set" in pd, "property has setter")
+        assert_false(pd.writable, "not writable")
+        assert_true(pd.enumerable, "enumerable")
+        assert_false(pd.configurable, "not configurable")
+      }, "Constant " + name + " on " + description)
+    })
+  })
+})
+</script>