Kernel debugging; service tests

runtime/observatory/tests/service/debugger_location_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
 
 import 'package:observatory/service_io.dart';
 import 'package:observatory/debugger.dart';
 import 'package:unittest/unittest.dart';
 import 'service_test_common.dart';
 import 'test_helper.dart';
@@ skipping 37 matching lines @@
 
 class DebuggerLocationTestBar {
 }
 
 Future<Debugger> initDebugger(Isolate isolate) {
   return isolate.getStack().then((stack) {
     return new TestDebugger(isolate, stack);
   });
 }
 
+void dummy() {

[Kevin Millikin (Google), 2017/02/08 15:37:51]

Do we have a plan for a better way to do this?

[Cutch, 2017/02/08 16:48:20]

Why is this needed?

[jensj, 2017/02/13 14:04:15]

Even though unittest.dart is included, it isn't included in the dill file unless
we actually use it. By reading this field we actually use the file, and it is
thus included in the file.
If it isn't included we cannot set breakpoints in unittest.dart.

[jensj, 2017/02/13 14:04:15]

I don't know. It seems somewhat artificial to me to want to set a breakpoint in
an unused library, so I'm pretty okay with this...

+  // Use something from unittest.dart in order to get it included in kernel.
+  formatStacks;
+}
+
 var tests = [
 
 hasStoppedAtBreakpoint,
 
 // Parse '' => current position
 (Isolate isolate) async {
   var debugger = await initDebugger(isolate);
   var loc = await DebuggerLocation.parse(debugger, '');
   expect(loc.valid, isTrue);
   expect(loc.toString(), equals('debugger_location_test.dart:$LINE_A:5'));
@@ skipping 78 matching lines @@
   // TODO(turnidge): Printing a constructor currently adds
   // another class qualifier at the front.  Do we want to change
   // this to be more consistent?
   expect(loc.toString(), equals(
       'DebuggerLocationTestFoo.DebuggerLocationTestFoo.named'));
 },
 
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testFunction);