Report error for ignored priority file. Ignore subscription for ignored files.

pkg/analysis_server/test/analysis_server_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 test.analysis_server;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 438 matching lines @@
         }
         return false;
       }), isTrue);
       // the last notification should indicate that analysis is complete
       Notification notification = notifications[notifications.length - 1];
       var params = new ServerStatusParams.fromNotification(notification);
       expect(params.analysis.isAnalyzing, isFalse);
     });
   }
 
+  test_setAnalysisSubscriptions_fileInIgnoredFolder() async {
+    String path = '/project/samples/sample.dart';
+    resourceProvider.newFile(path, '');
+    resourceProvider.newFile(
+        '/project/.analysis_options',
+        r'''
+analyzer:
+  exclude:
+    - 'samples/**'
+''');
+    server.setAnalysisRoots('0', ['/project'], [], {});
+    server.setAnalysisSubscriptions(<AnalysisService, Set<String>>{
+      AnalysisService.NAVIGATION: new Set<String>.from([path])
+    });
+    // the file is excluded, so no navigation notification
+    await server.onAnalysisComplete;
+    expect(channel.notificationsReceived.any((notification) {
+      return notification.event == ANALYSIS_NAVIGATION;
+    }), isFalse);
+  }
+
   Future test_shutdown() {
     server.handlers = [new ServerDomainHandler(server)];
     var request = new Request('my28', SERVER_SHUTDOWN);
     return channel.sendRequest(request).then((Response response) {
       expect(response.id, equals('my28'));
       expect(response.error, isNull);
     });
   }
 
   Future test_unknownRequest() {
@@ skipping 66 matching lines @@
   _MockServerOperation(this.context);
 
   @override
   ServerOperationPriority get priority => ServerOperationPriority.ANALYSIS;
 
   @override
   void perform(AnalysisServer server) {
     isComplete = true;
   }
 }