1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/decompile-for-of.js b/js/src/tests/non262/extensions/decompile-for-of.js
new file mode 100644
index 0000000000..b99e20a40b
--- /dev/null
+++ b/js/src/tests/non262/extensions/decompile-for-of.js
@@ -0,0 +1,27 @@
+// The decompiler can handle the implicit call to @@iterator in a for-of loop.
+
+var x;
+function check(code, msg) {
+    var s = "no exception thrown";
+    try {
+        eval(code);
+    } catch (exc) {
+        s = exc.message;
+    }
+
+    assertEq(s, msg);
+}
+
+x = {};
+check("for (var v of x) throw fit;", "x is not iterable");
+check("[...x]", "x is not iterable");
+check("Math.hypot(...x)", "x is not iterable");
+
+x[Symbol.iterator] = "potato";
+check("for (var v of x) throw fit;", "x is not iterable");
+
+x[Symbol.iterator] = {};
+check("for (var v of x) throw fit;", "x[Symbol.iterator] is not a function");
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0, "ok");