improved yield return test

test/generators.coffee

@@ -40,12 +40,15 @@ test "last line yields are returned", ->
 
 test "yield return can be used anywhere in the function body", ->
   x = do ->
-    if true
-      yield return true
-    return false
+    if 2 is yield 1
+      yield return 42
+    throw new Error "this code shouldn't be reachable"
 
   y = x.next()
-  ok y.value is true and y.done is true
+  ok y.value is 1 and y.done is false
+
+  y = x.next 2
+  ok y.value is 42 and y.done is true
 
 test "bound generator", ->
   obj =