1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/import-assertion-trlng-comma.js b/js/src/tests/test262/language/module-code/import-assertion-trlng-comma.js
new file mode 100644
index 0000000000..0fe77a373a
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/import-assertion-trlng-comma.js
@@ -0,0 +1,34 @@
+// |reftest| shell-option(--enable-import-assertions) skip-if(!xulRuntime.shell) module -- requires shell-options
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    AssertClause in ImportDeclaration may contain a trailing comma
+esid: sec-modules
+info: |
+  ImportDeclaration:
+    import ModuleSpecifier[no LineTerminator here] AssertClause;
+
+  AssertClause:
+    assert {}
+    assert {AssertEntries ,opt}
+
+  AssertEntries:
+    AssertionKey : StringLiteral
+    AssertionKey : StringLiteral , AssertEntries
+
+  AssertionKey:
+    IdentifierName
+    StringLiteral
+features: [import-assertions, globalThis]
+flags: [module]
+---*/
+
+import x from './import-assertion-1_FIXTURE.js' assert {test262:'',};
+import './import-assertion-2_FIXTURE.js' assert {test262:'',};
+export * from './import-assertion-3_FIXTURE.js' assert {test262:'',};
+
+assert.sameValue(x, 262.1);
+assert.sameValue(globalThis.test262, 262.2);
+
+reportCompare(0, 0);