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

pkg/analysis_server/test/analysis/set_priority_files_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.set_priority_files;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show InternalAnalysisContext;
@@ skipping 54 matching lines @@
   }
 
   test_fileNotInAnalysisRoot() async {
     String path = '/other/file.dart';
     addFile(path, '');
     Response response = await _setPriorityFile(path);
     expect(response.error, isNotNull);
     expect(response.error.code, RequestErrorCode.UNANALYZED_PRIORITY_FILES);
   }
 
+  test_ignoredInAnalysisOptions() async {
+    String sampleFile = '$projectPath/samples/sample.dart';
+    addFile(
+        '$projectPath/.analysis_options',
+        r'''
+analyzer:
+  exclude:
+    - 'samples/**'
+''');
+    addFile(sampleFile, '');
+    // attempt to set priority file
+    Response response = await _setPriorityFile(sampleFile);
+    expect(response.error, isNotNull);
+    expect(response.error.code, RequestErrorCode.UNANALYZED_PRIORITY_FILES);
+  }
+
+  test_ignoredInAnalysisOptions_inChildContext() async {
+    addFile('$projectPath/.packages', '');
+    addFile('$projectPath/child/.packages', '');
+    String sampleFile = '$projectPath/child/samples/sample.dart';
+    addFile(
+        '$projectPath/child/.analysis_options',
+        r'''
+analyzer:
+  exclude:
+    - 'samples/**'
+''');
+    addFile(sampleFile, '');
+    // attempt to set priority file
+    Response response = await _setPriorityFile(sampleFile);
+    expect(response.error, isNotNull);
+    expect(response.error.code, RequestErrorCode.UNANALYZED_PRIORITY_FILES);
+  }
+
+  test_ignoredInAnalysisOptions_inRootContext() async {
+    addFile('$projectPath/.packages', '');
+    addFile('$projectPath/child/.packages', '');
+    String sampleFile = '$projectPath/child/samples/sample.dart';
+    addFile(
+        '$projectPath/.analysis_options',
+        r'''
+analyzer:
+  exclude:
+    - 'child/samples/**'
+''');
+    addFile(sampleFile, '');
+    // attempt to set priority file
+    Response response = await _setPriorityFile(sampleFile);
+    expect(response.error, isNotNull);
+    expect(response.error.code, RequestErrorCode.UNANALYZED_PRIORITY_FILES);
+  }
+
   _setPriorityFile(String file) async {
     Request request =
         new AnalysisSetPriorityFilesParams(<String>[file]).toRequest('0');
     return await serverChannel.sendRequest(request);
   }
 }