1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/from/wrap-throw.js b/js/src/tests/non262/Iterator/from/wrap-throw.js
new file mode 100644
index 0000000000..ffe17c80e8
--- /dev/null
+++ b/js/src/tests/non262/Iterator/from/wrap-throw.js
@@ -0,0 +1,45 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally
+class Iter {
+  next() {
+    return { done: false, value: 0 };
+  }
+}
+
+const iter = new Iter();
+const wrap = Iterator.from(iter);
+
+assertThrowsInstanceOf(() => wrap.throw(new Error()), Error);
+assertThrows(() => wrap.throw());
+assertThrows(() => wrap.throw(1));
+
+class IterThrowNull {
+  next() {
+    return { done: false, value: 0 };
+  }
+  throw = null;
+}
+
+const iterNull = new IterThrowNull();
+const wrapNull = Iterator.from(iter);
+
+assertThrowsInstanceOf(() => wrapNull.throw(new Error()), Error);
+assertThrows(() => wrapNull.throw());
+assertThrows(() => wrapNull.throw(1));
+
+class IterWithThrow {
+  next() {
+    return { done: false, value: 0 };
+  }
+
+  throw(value) {
+    return value;
+  }
+}
+
+const iterWithThrow = new IterWithThrow();
+const wrapWithThrow = Iterator.from(iterWithThrow);
+
+assertEq(wrapWithThrow.throw(1), 1);
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);