1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/error-type-3.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/error-type-3.html
new file mode 100644
index 0000000000..8a16266f4c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/error-type-3.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<title>Handling of different types of errors</title>
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+    setup({allow_uncaught_exception: true});
+
+    window.log = [];
+
+    window.addEventListener("error", ev => log.push(ev.error));
+    window.addEventListener("onunhandledrejection", unreachable);
+
+    const test_load = async_test(
+        "instantiation error has higher priority than evaluation error");
+    window.addEventListener("load", test_load.step_func_done(ev => {
+      assert_equals(log.length, 5);
+
+      // An evaluation error is reported for the first top-level
+      // <script> element for throw.js.
+      assert_equals(log[0], 'throw');
+      assert_true(log[1].foo);
+      assert_equals(log[2], 1);
+
+      // An instantiation error is reported for the second top-level <script>.
+      assert_equals(log[3].constructor, SyntaxError);
+      assert_equals(log[4], 2);
+    }));
+
+    function unreachable() { log.push("unexpected"); }
+</script>
+<script type="module" src="./throw.js"
+    onerror="unreachable()" onload="log.push(1)"></script>
+<script type="module" src="./error-type-3.js"
+    onerror="unreachable()" onload="log.push(2)"></script>