Throw a TypeError when calling "next" method of a newly created generator with a value

test/mjsunit/harmony/generators-iteration.js

Index: test/mjsunit/harmony/generators-iteration.js
diff --git a/test/mjsunit/harmony/generators-iteration.js b/test/mjsunit/harmony/generators-iteration.js
index d86a20f9e7da2cd52a59dd3cb15eb4bcfea76ec8..e6c05e3445996f96ac0d638ff8a96d46cc63d54e 100644
--- a/test/mjsunit/harmony/generators-iteration.js
+++ b/test/mjsunit/harmony/generators-iteration.js
@@ -74,7 +74,12 @@ function TestGenerator(g, expected_values_for_next,
   }
   function testSend(thunk) {
     var iter = thunk();
-    for (var i = 0; i < expected_values_for_send.length; i++) {
+    // Throw error when sending a value to a newly created generator.
+    if (expected_values_for_send.length > 0) {
+        assertThrows(function () { iter.next(send_val); }, TypeError);
+        assertIteratorResult(expected_values_for_send[0], 0 == expected_values_for_send.length - 1, iter.next());
+    }
+    for (var i = 1; i < expected_values_for_send.length; i++) {
       assertIteratorResult(expected_values_for_send[i],
                            i == expected_values_for_send.length - 1,
                            iter.next(send_val));
@@ -648,3 +653,37 @@ function TestRecursion() {
   assertThrows(TestThrowRecursion, Error);
 }
 TestRecursion();
+
+function TestNewlyCreated(instantiate) {
+    function * g() { return yield 1; }
+
+    function Test1(iter) {
+        assertThrows(function () { iter.next(1); }, TypeError);
+        // Iterator is still "suspendedStart" state.
+        assertThrows(function () { iter.next(1); }, TypeError);
+        assertIteratorResult(1, false, iter.next());
+        assertIteratorResult(2, true, iter.next(2));
+        assertIteratorIsClosed(iter);
+    }
+    Test1(instantiate(g));
+
+    function Test1(iter) {
+        // If a provided value is undefined, iter with "suspendedStart" status
+        // doesn't throw an error.
+        assertIteratorResult(1, false, iter.next(undefined));
+        assertIteratorResult(2, true, iter.next(2));
+        assertIteratorIsClosed(iter);
+    }
+    Test1(instantiate(g));
+
+    function Test2(iter) {
+        function Sentinel() { }
+        assertThrows(function () { iter.throw(new Sentinel); }, Sentinel);
+        // When calling throw method to an newly created iterator, it becomes
+        // "completed" state.
+        assertThrownIteratorIsClosed(iter);
+    }
+    Test2(instantiate(g));
+}
+TestNewlyCreated(function (g) { return g(); });
+TestNewlyCreated(function* (g) { return yield* g(); });