Generated front_end/testcases/inference test files from Analyzer tests.

pkg/front_end/testcases/inference/downwards_inference_yield_yield_star.dart

+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/*@testedFeatures=inference*/
+library test;
+
+import 'dart:async';
+
+abstract class MyStream<T> extends Stream<T> {
+  factory MyStream() => null;
+}
+
+Stream<List<int>> foo() async* {
+  yield /*@typeArgs=int*/ [];
+  yield /*error:YIELD_OF_INVALID_TYPE*/ /*@typeArgs=dynamic*/ new MyStream();
+  yield* /*error:YIELD_OF_INVALID_TYPE*/ /*@typeArgs=dynamic*/ [];
+  yield* /*@typeArgs=List<int>*/ new MyStream();
+}
+
+Iterable<Map<int, int>> bar() sync* {
+  yield /*@typeArgs=int, int*/ {};
+  yield /*error:YIELD_OF_INVALID_TYPE*/ /*@typeArgs=dynamic*/ new List();
+  yield* /*error:YIELD_OF_INVALID_TYPE*/ /*@typeArgs=dynamic, dynamic*/ {};
+  yield* /*@typeArgs=Map<int, int>*/ new List();
+}