1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-null-or-undefined.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-null-or-undefined.js
new file mode 100644
index 0000000000..fbc5affa42
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-null-or-undefined.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2018 Peter Wong. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: pending
+description: |
+  Default constructor is used when species constructor is null or undefined
+info: |
+  RegExp.prototype [ @@matchAll ] ( string )
+    [...]
+    2. Return ? [MatchAllIterator](#matchalliterator)(R, string).
+
+  MatchAllIterator ( R, O )
+    [...]
+    3. Let C be ? [SpeciesConstructor][species-constructor](R, RegExp).
+
+  SpeciesConstructor ( O, defaultConstructor )
+    [...]
+    2. Let C be ? Get(O, "constructor").
+    3. If C is undefined, return defaultConstructor.
+    4. If Type(C) is not Object, throw a TypeError exception.
+    5. Let S be ? Get(C, @@species).
+    6. If S is either undefined or null, return defaultConstructor.
+features: [Symbol.matchAll, Symbol.species]
+includes: [compareArray.js, compareIterator.js, regExpUtils.js]
+---*/
+
+function TestWithConstructor(ctor) {
+  var regexp = /\w/g;
+  regexp.constructor = {
+    [Symbol.species]: ctor
+  };
+  var str = 'a*b';
+
+  assert.compareIterator(regexp[Symbol.matchAll](str), [
+    matchValidator(['a'], 0, str),
+    matchValidator(['b'], 2, str)
+  ]);
+}
+
+TestWithConstructor(undefined);
+TestWithConstructor(null);
+
+reportCompare(0, 0);