1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring-throws.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring-throws.js
new file mode 100644
index 0000000000..6592addd96
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring-throws.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2018 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: pending
+description: String coercion of string parameter
+info: |
+  RegExp.prototype [ @@matchAll ] ( string )
+    [...]
+    3. Return ? MatchAllIterator(R, string).
+
+  MatchAllIterator ( R, O )
+    1. Let S be ? ToString(O).
+features: [Symbol.matchAll]
+---*/
+
+var obj = {
+  valueOf() {
+    throw new Test262Error('This method should not be invoked.');
+  },
+  toString() {
+    throw new Test262Error('toString invoked');
+  }
+};
+
+assert.throws(Test262Error, function() {
+  /toString value/[Symbol.matchAll](obj);
+});
+
+reportCompare(0, 0);