[generators] Implement Generator.prototype.return.

test/mjsunit/harmony/function-sent.js

Index: test/mjsunit/harmony/function-sent.js
diff --git a/test/mjsunit/harmony/function-sent.js b/test/mjsunit/harmony/function-sent.js
index 9dbc16882ee5129ca0e34f1988cf5e5ac0378e3d..b3cd644dd9ce43da06b58c65dca66faaef58824e 100644
--- a/test/mjsunit/harmony/function-sent.js
+++ b/test/mjsunit/harmony/function-sent.js
@@ -22,18 +22,25 @@
   }
 
   {
-    x = g();
+    let x = g();
     assertEquals({value: 1, done: false}, x.next(1));
     assertEquals({value: 2, done: false}, x.next(2));
     assertEquals({value: 3, done: true}, x.next(3));
   }
 
   {
-    x = g();
+    let x = g();
     assertEquals({value: 1, done: false}, x.next(1));
     assertEquals({value: 2, done: false}, x.throw(2));
     assertEquals({value: 3, done: true}, x.next(3));
   }
+
+  {
+    let x = g();
+    assertEquals({value: 1, done: false}, x.next(1));
+    assertEquals({value: 2, done: false}, x.return(2));
+    assertEquals({value: 3, done: true}, x.next(3));
+  }
 }
 
 
@@ -53,18 +60,25 @@
   }
 
   {
-    x = g();
+    let x = g();
     assertEquals({value: 1, done: false}, x.next(1));
     assertEquals({value: undefined, done: false}, x.next(2));
     assertEquals({value: 3, done: true}, x.next(3));
   }
 
   {
-    x = g();
+    let x = g();
     assertEquals({value: 1, done: false}, x.next(1));
     assertEquals({value: undefined, done: false}, x.next(2));
     assertEquals({value: 42, done: true}, x.throw(42));
   }
+
+  {
+    let x = g();
+    assertEquals({value: 1, done: false}, x.next(1));
+    assertEquals({value: undefined, done: false}, x.next(2));
+    assertEquals({value: 42, done: true}, x.return(42));
+  }
 }