1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/manual-advance.js b/js/src/jit-test/tests/for-of/manual-advance.js
new file mode 100644
index 0000000000..b4059251db
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/manual-advance.js
@@ -0,0 +1,15 @@
+// Manually advancing the iterator.
+
+load(libdir + 'iteration.js');
+
+function* g(n) { for (var i=0; i<n; i++) yield i; }
+
+var inner = g(20);
+
+var n = 0;
+for (var x of inner) {
+    assertEq(x, n * 2);
+    assertIteratorNext(inner, n * 2 + 1);
+    n++;
+}
+assertEq(n, 10);