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runtime/observatory/tests/service/async_generator_breakpoint_test.dart

 // Copyright (c) 2015, 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.
 // VMOptions=--error_on_bad_type --error_on_bad_override --verbose-debug
 
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 
-printSync() {  // Line 10
+printSync() {
+  // Line 10
   print('sync');
 }
-printAsync() async {  // Line 13
+
+printAsync() async {
+  // Line 13
   print('async');
 }
-printAsyncStar() async* {  // Line 16
+
+printAsyncStar() async* {
+  // Line 16
   print('async*');
 }
-printSyncStar() sync* {  // Line 19
+
+printSyncStar() sync* {
+  // Line 19
   print('sync*');
 }
 
 var testerReady = false;
 testeeDo() {
   // We block here rather than allowing the isolate to enter the
   // paused-on-exit state before the tester gets a chance to set
   // the breakpoints because we need the event loop to remain
   // operational for the async bodies to run.
   print('testee waiting');
-  while(!testerReady);
+  while (!testerReady);
 
   printSync();
   var future = printAsync();
   var stream = printAsyncStar();
   var iterator = printSyncStar();
 
-  print('middle');  // Line 37.
+  print('middle'); // Line 37.
 
   future.then((v) => print(v));
   stream.toList();
   iterator.toList();
 }
 
 testAsync(Isolate isolate) async {
   await isolate.rootLibrary.load();
   var script = isolate.rootLibrary.scripts[0];
 
   var bp1 = await isolate.addBreakpoint(script, 10);
   expect(bp1, isNotNull);
   expect(bp1 is Breakpoint, isTrue);
   var bp2 = await isolate.addBreakpoint(script, 13);
   expect(bp2, isNotNull);
   expect(bp2 is Breakpoint, isTrue);
   var bp3 = await isolate.addBreakpoint(script, 16);
   expect(bp3, isNotNull);
   expect(bp3 is Breakpoint, isTrue);
   var bp4 = await isolate.addBreakpoint(script, 19);
   expect(bp4, isNotNull);
   expect(bp4 is Breakpoint, isTrue);
   var bp5 = await isolate.addBreakpoint(script, 37);
   print("BP5 - $bp5");
   expect(bp5, isNotNull);
   expect(bp5 is Breakpoint, isTrue);
 
   var hits = [];
 
-  isolate.rootLibrary.evaluate('testerReady = true;')
-      .then((Instance result) {
-        expect(result.valueAsString, equals('true'));
-      });
+  isolate.rootLibrary.evaluate('testerReady = true;').then((Instance result) {
+    expect(result.valueAsString, equals('true'));
+  });
 
   var stream = await isolate.vm.getEventStream(VM.kDebugStream);
   await for (ServiceEvent event in stream) {
     if (event.kind == ServiceEvent.kPauseBreakpoint) {
       var bp = event.breakpoint;
       print('Hit $bp');
       hits.add(bp);
       await isolate.resume();
 
       if (hits.length == 5) break;
     }
   }
 
   expect(hits, equals([bp1, bp5, bp4, bp2, bp3]));
 }
 
 var tests = [testAsync];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testeeDo);