Add test for docgen of source with async/await.

pkg/docgen/test/async_await_test.dart

 // Copyright (c) 2014, 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.
 
-library single_library_test;
+library async_await_test;
 
 import 'dart:io';
 
 import 'package:path/path.dart' as path;
 import 'package:unittest/unittest.dart';
 
 import '../lib/src/exports/mirrors_util.dart' as dart2js_util;
 import '../lib/docgen.dart';
 
 const String DART_LIBRARY = '''
   library test;
   /**
    * Doc comment for class [A].
    *
    * Multiline Test
    */
   /*
    * Normal comment for class A.
    */
   class A {
-
-    int _someNumber;
-
-    A() {
-      _someNumber = 12;
+    m1() sync* {
+      yield 0;
     }
 
-    /**
-     * Test for linking to parameter [A]
-     */
-    void doThis(int A) {
-      print(A);
+    m2() async {
+      await 0;
+      await for (var e in m1()) {}
+    }
+
+    m3() async* {
+      yield* m1();
     }
   }
 
+  m1() sync* {
+    yield 0;
+  }
+
+  m2() async {
+    await 0;
+    await for (var e in m1()) {}
+  }
+
+  m3() async* {
+    yield* m1();
+  }
+
   main() {
+    m1();
+    m2();
+    m3();
     A a = new A();
-    a.doThis(5);
+    a.m1();
+    a.m2();
+    a.m3();
   }
 ''';
 
 main() {
   group('Generate docs for', () {
-    test('one simple file.', () {
+    test('file with async/await.', () {
       var temporaryDir = Directory.systemTemp.createTempSync('single_library_');
       var fileName = path.join(temporaryDir.path, 'temp.dart');
       var file = new File(fileName);
       file.writeAsStringSync(DART_LIBRARY);
 
       return getMirrorSystem([new Uri.file(fileName)], false)
         .then((mirrorSystem) {
           var testLibraryUri = new Uri.file(path.absolute(fileName),
                                             windows: Platform.isWindows);
           var library = new Library(mirrorSystem.libraries[testLibraryUri]);
           expect(library is Library, isTrue);
 
           var classTypes = library.classes;
           var classes = [];
           classes.addAll(classTypes.values);
           classes.addAll(library.errors.values);
           expect(classes.every((e) => e is Class), isTrue);
 
           expect(library.typedefs.values.every((e) => e is Typedef), isTrue);
 
           var classMethodTypes = [];
           classes.forEach((e) {
             classMethodTypes.add(e.methods);
             classMethodTypes.add(e.inheritedMethods);
           });
-          expect(classMethodTypes.every((e) => e is Map<String, Method>), isTrue);
+          expect(classMethodTypes.every((e) => e is Map<String, Method>),
+                 isTrue);
 
           var classMethods = [];
           classMethodTypes.forEach((e) {
             classMethods.addAll(e.values);
           });
           expect(classMethods.every((e) => e is Method), isTrue);
 
           var methodParameters = [];
           classMethods.forEach((e) {
             methodParameters.addAll(e.parameters.values);
@@ skipping 19 matching lines @@
           /// Testing fixReference
           // Testing Doc comment for class [A].
           var libraryMirror = mirrorSystem.libraries[testLibraryUri];
           var classMirror =
               dart2js_util.classesOf(libraryMirror.declarations).first;
           var classDocComment = library.fixReference('A').children.first.text;
           expect(classDocComment, 'test.A');
 
           // Test for linking to parameter [A]
           var method = getDocgenObject(
-              classMirror.declarations[dart2js_util.symbolOf('doThis')]);
-          var methodParameterDocComment = method.fixReference(
-              'A').children.first.text;
-          expect(methodParameterDocComment, 'test.A.doThis.A');
+              classMirror.declarations[dart2js_util.symbolOf('m1')]);
 
-          // Testing trying to refer to doThis function
+          // Testing trying to refer to m1 method
           var methodDocComment = method.fixReference(
-              'doThis').children.first.text;
-          expect(methodDocComment, 'test.A.doThis');
+              'm1').children.first.text;
+          expect(methodDocComment, 'test.A.m1');
 
           // Testing something with no reference
           var libraryDocComment = method.fixReference('foobar').text;
           expect(libraryDocComment, 'foobar');
+
+          // Testing trying to refer to m1 function
+          libraryDocComment = library.fixReference('m1').children.first.text;
+          expect(libraryDocComment, 'test.m1');
         }).whenComplete(() => temporaryDir.deleteSync(recursive: true));
     });
   });
 }