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runtime/observatory/tests/service/dev_fs_spawn_test.dart

 // Copyright (c) 2016, 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 'dart:async';
 import 'dart:convert';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'service_test_common.dart';
 import 'test_helper.dart';
 
 var tests = [
   (VM vm) async {
     // Create a new fs.
     var fsName = 'scratch';
     var result = await vm.invokeRpcNoUpgrade('_createDevFS', {
-        'fsName': fsName,
-      });
+      'fsName': fsName,
+    });
     expect(result['type'], equals('FileSystem'));
     expect(result['name'], equals('scratch'));
     expect(result['uri'], new isInstanceOf<String>());
     var fsUri = result['uri'];
 
     // Spawn a script with a bad uri and make sure that the error is
     // delivered asynchronously.
     Completer completer = new Completer();
     var sub;
-    sub = await vm.listenEventStream(
-      VM.kIsolateStream,
-      (ServiceEvent event) {
-        if (event.kind == ServiceEvent.kIsolateSpawn) {
-          expect(event.spawnToken, equals('someSpawnToken'));
-          expect(event.spawnError, startsWith(
-              'IsolateSpawnException: Unable to spawn isolate: '));
-          expect(event.isolate, isNull);
-          completer.complete();
-          sub.cancel();
-        }
-      });
+    sub = await vm.listenEventStream(VM.kIsolateStream, (ServiceEvent event) {
+      if (event.kind == ServiceEvent.kIsolateSpawn) {
+        expect(event.spawnToken, equals('someSpawnToken'));
+        expect(event.spawnError,
+            startsWith('IsolateSpawnException: Unable to spawn isolate: '));
+        expect(event.isolate, isNull);
+        completer.complete();
+        sub.cancel();
+      }
+    });
 
     result = await vm.invokeRpcNoUpgrade('_spawnUri', {
-        'token': 'someSpawnToken',
-        'uri': '${fsUri}doesnotexist.dart',
+      'token': 'someSpawnToken',
+      'uri': '${fsUri}doesnotexist.dart',
     });
     expect(result['type'], equals('Success'));
     await completer.future;
 
     // Delete the fs.
     result = await vm.invokeRpcNoUpgrade('_deleteDevFS', {
-        'fsName': fsName,
+      'fsName': fsName,
     });
     expect(result['type'], equals('Success'));
   },
-
   (VM vm) async {
     // Create a new fs.
     var fsName = 'scratch';
     var result = await vm.invokeRpcNoUpgrade('_createDevFS', {
-        'fsName': fsName,
-      });
+      'fsName': fsName,
+    });
     expect(result['type'], equals('FileSystem'));
     expect(result['name'], equals('scratch'));
     expect(result['uri'], new isInstanceOf<String>());
     var fsUri = result['uri'];
 
     var filePaths = [
-        'devfs_file0.dart',
-        'devfs_file1.dart',
-        'devfs_file2.dart'
+      'devfs_file0.dart',
+      'devfs_file1.dart',
+      'devfs_file2.dart'
     ];
     var scripts = [
-'''
+      '''
 import 'dart:developer';
 proofOfLife() => 'I live!';
 main() {
   print('HELLO WORLD 1');
   debugger();
 }
 ''',
-'''
+      '''
 import 'dart:developer';
 var globalArgs;
 proofOfLife() => 'I live, \${globalArgs}!';
 main(args) {
   globalArgs = args;
   print('HELLO WORLD 2');
   debugger();
 }
 ''',
-'''
+      '''
 import 'dart:developer';
 var globalArgs;
 var globalMsg;
 proofOfLife() => 'I live, \${globalArgs}, \${globalMsg}!';
 main(args, msg) {
   globalArgs = args;
   globalMsg = msg;
   print('HELLO WORLD 3');
   debugger();
 }
 ''',
     ];
 
     // Write three scripts to the fs.
     for (int i = 0; i < 3; i++) {
       var fileContents = BASE64.encode(UTF8.encode(scripts[i]));
       result = await vm.invokeRpcNoUpgrade('_writeDevFSFile', {
         'fsName': fsName,
         'path': filePaths[i],
         'fileContents': fileContents
       });
       expect(result['type'], equals('Success'));
     }
 
     // Spawn the script with no arguments or message and make sure
     // that we are notified.
     Completer completer = new Completer();
     var sub;
-    sub = await vm.listenEventStream(
-      VM.kIsolateStream,
-      (ServiceEvent event) {
-        if (event.kind == ServiceEvent.kIsolateSpawn) {
-          expect(event.spawnToken, equals('mySpawnToken0'));
-          expect(event.isolate, isNotNull);
-          expect(event.isolate.name, equals('devfs_file0.dart\$main'));
-          completer.complete(event.isolate);
-          sub.cancel();
-        }
-      });
+    sub = await vm.listenEventStream(VM.kIsolateStream, (ServiceEvent event) {
+      if (event.kind == ServiceEvent.kIsolateSpawn) {
+        expect(event.spawnToken, equals('mySpawnToken0'));
+        expect(event.isolate, isNotNull);
+        expect(event.isolate.name, equals('devfs_file0.dart\$main'));
+        completer.complete(event.isolate);
+        sub.cancel();
+      }
+    });
     result = await vm.invokeRpcNoUpgrade('_spawnUri', {
-        'token': 'mySpawnToken0',
-        'uri': '${fsUri}${filePaths[0]}',
+      'token': 'mySpawnToken0',
+      'uri': '${fsUri}${filePaths[0]}',
     });
     expect(result['type'], equals('Success'));
     var spawnedIsolate = await completer.future;
 
     // Wait for the spawned isolate to hit a breakpoint.
     await spawnedIsolate.load();
     await hasStoppedAtBreakpoint(spawnedIsolate);
 
     // Make sure that we are running code from the spawned isolate.
     result = await spawnedIsolate.rootLibrary.evaluate('proofOfLife()');
     expect(result.type, equals('Instance'));
     expect(result.kind, equals(M.InstanceKind.string));
     expect(result.valueAsString, equals('I live!'));
 
     // Spawn the script with arguments.
     completer = new Completer();
-    sub = await vm.listenEventStream(
-      VM.kIsolateStream,
-      (ServiceEvent event) {
-        if (event.kind == ServiceEvent.kIsolateSpawn) {
-          expect(event.spawnToken, equals('mySpawnToken1'));
-          expect(event.isolate, isNotNull);
-          expect(event.isolate.name, equals('devfs_file1.dart\$main'));
-          completer.complete(event.isolate);
-          sub.cancel();
-        }
-      });
+    sub = await vm.listenEventStream(VM.kIsolateStream, (ServiceEvent event) {
+      if (event.kind == ServiceEvent.kIsolateSpawn) {
+        expect(event.spawnToken, equals('mySpawnToken1'));
+        expect(event.isolate, isNotNull);
+        expect(event.isolate.name, equals('devfs_file1.dart\$main'));
+        completer.complete(event.isolate);
+        sub.cancel();
+      }
+    });
     result = await vm.invokeRpcNoUpgrade('_spawnUri', {
-        'token': 'mySpawnToken1',
-        'uri': '${fsUri}${filePaths[1]}',
-        'args': ['one', 'two', 'three']
+      'token': 'mySpawnToken1',
+      'uri': '${fsUri}${filePaths[1]}',
+      'args': ['one', 'two', 'three']
     });
     expect(result['type'], equals('Success'));
     spawnedIsolate = await completer.future;
 
     // Wait for the spawned isolate to hit a breakpoint.
     await spawnedIsolate.load();
     await hasStoppedAtBreakpoint(spawnedIsolate);
 
     // Make sure that we are running code from the spawned isolate.
     result = await spawnedIsolate.rootLibrary.evaluate('proofOfLife()');
     expect(result.type, equals('Instance'));
     expect(result.kind, equals(M.InstanceKind.string));
     expect(result.valueAsString, equals('I live, [one, two, three]!'));
 
     // Spawn the script with arguments and message
     completer = new Completer();
-    sub = await vm.listenEventStream(
-      VM.kIsolateStream,
-      (ServiceEvent event) {
-        if (event.kind == ServiceEvent.kIsolateSpawn) {
-          expect(event.spawnToken, equals('mySpawnToken2'));
-          expect(event.isolate, isNotNull);
-          expect(event.isolate.name, equals('devfs_file2.dart\$main'));
-          completer.complete(event.isolate);
-          sub.cancel();
-        }
-      });
+    sub = await vm.listenEventStream(VM.kIsolateStream, (ServiceEvent event) {
+      if (event.kind == ServiceEvent.kIsolateSpawn) {
+        expect(event.spawnToken, equals('mySpawnToken2'));
+        expect(event.isolate, isNotNull);
+        expect(event.isolate.name, equals('devfs_file2.dart\$main'));
+        completer.complete(event.isolate);
+        sub.cancel();
+      }
+    });
     result = await vm.invokeRpcNoUpgrade('_spawnUri', {
-        'token': 'mySpawnToken2',
-        'uri': '${fsUri}${filePaths[2]}',
-        'args': ['A', 'B', 'C'],
-        'message': 'test'
+      'token': 'mySpawnToken2',
+      'uri': '${fsUri}${filePaths[2]}',
+      'args': ['A', 'B', 'C'],
+      'message': 'test'
     });
     expect(result['type'], equals('Success'));
     spawnedIsolate = await completer.future;
 
     // Wait for the spawned isolate to hit a breakpoint.
     await spawnedIsolate.load();
     await hasStoppedAtBreakpoint(spawnedIsolate);
 
     // Make sure that we are running code from the spawned isolate.
     result = await spawnedIsolate.rootLibrary.evaluate('proofOfLife()');
     expect(result.type, equals('Instance'));
     expect(result.kind, equals(M.InstanceKind.string));
     expect(result.valueAsString, equals('I live, [A, B, C], test!'));
 
     // Delete the fs.
     result = await vm.invokeRpcNoUpgrade('_deleteDevFS', {
-        'fsName': fsName,
+      'fsName': fsName,
     });
     expect(result['type'], equals('Success'));
   },
 ];
 
 main(args) async => runVMTests(args, tests);