1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/reduce/reducer-not-callable-throws.js b/js/src/tests/non262/Iterator/prototype/reduce/reducer-not-callable-throws.js
new file mode 100644
index 0000000000..c33e5e4f9c
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/reduce/reducer-not-callable-throws.js
@@ -0,0 +1,20 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally
+
+class TestIterator extends Iterator {
+  next() {
+    return { done: false, value: 0 };
+  }
+}
+
+const iter = new TestIterator();
+assertThrowsInstanceOf(() => iter.reduce(), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(undefined), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(null), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(0), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(false), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(''), TypeError);
+assertThrowsInstanceOf(() => iter.reduce(Symbol('')), TypeError);
+assertThrowsInstanceOf(() => iter.reduce({}), TypeError);
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);