1 files changed, 37 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/choice-of-error-1.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/choice-of-error-1.html
new file mode 100644
index 0000000000..50933da2c1
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/choice-of-error-1.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>Choice of parse 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(
+        "Parse errors in different files should be reported " +
+        "depending on different roots");
+    window.addEventListener("load", test_load.step_func_done(ev => {
+      assert_equals(log.length, 4);
+
+      // Two different parse errors from different module scripts
+      // should be reported for each <script> element.
+      assert_equals(log[0].constructor, SyntaxError);
+      assert_equals(log[1], 1);
+
+      assert_equals(log[2].constructor, SyntaxError);
+      assert_equals(log[3], 2);
+
+      assert_not_equals(log[0], log[2],
+          'two different parse errors should be reported');
+    }));
+
+    function unreachable() { log.push("unexpected"); }
+</script>
+<script type="module" src="./choice-of-error-1a.js"
+    onerror="unreachable()" onload="log.push(1)"></script>
+<script type="module" src="./choice-of-error-1b.js"
+    onerror="unreachable()" onload="log.push(2)"></script>