Make analysis_server use ignore patterns from .analysis_options file

pkg/analysis_server/test/context_manager_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.context.directory.manager;
 
 import 'dart:collection';
 
 import 'package:analysis_server/src/context_manager.dart';
 import 'package:analysis_server/src/source/optimizing_pub_package_map_provider.dart';
 import 'package:analysis_server/uri/resolver_provider.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
-import 'package:analyzer/source/path_filter.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:path/path.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
 import 'mocks.dart';
 
 main() {
@@ skipping 164 matching lines @@
     // Pump event loop so new files are discovered and added to context.
     await pumpEventQueue();
     // Verify that ignored files were ignored.
     Map<String, int> fileTimestamps = manager.currentContextFilePaths[projPath];
     expect(fileTimestamps, isNotEmpty);
     List<String> files = fileTimestamps.keys.toList();
     expect(files.length, equals(1));
     expect(files[0], equals('/my/proj/lib/main.dart'));
   }
 
+  test_path_filter_analysis_option() async {
+    // Create files.
+    String libPath = newFolder([projPath, LIB_NAME]);
+    newFile([libPath, 'main.dart']);
+    newFile([libPath, 'nope.dart']);
+    String sdkExtPath = newFolder([projPath, 'sdk_ext']);
+    newFile([sdkExtPath, 'entry.dart']);
+    String sdkExtSrcPath = newFolder([projPath, 'sdk_ext', 'src']);
+    newFile([sdkExtSrcPath, 'part.dart']);
+    // Setup analysis options file with ignore list.
+    newFile([projPath, '.analysis_options'], r'''
+analyzer:
+  exclude:
+    - lib/nope.dart
+    - 'sdk_ext/**'
+''');
+    // Setup context.
+    manager.setRoots(<String>[projPath], <String>[], <String, String>{});
+    // Verify that analysis options was parsed and the ignore patterns applied.
+    Map<String, int> fileTimestamps = manager.currentContextFilePaths[projPath];
+    expect(fileTimestamps, isNotEmpty);
+    List<String> files = fileTimestamps.keys.toList();
+    expect(files.length, equals(1));
+    expect(files[0], equals('/my/proj/lib/main.dart'));
+  }
+
   test_refresh_oneContext() {
     // create two contexts with pubspec.yaml files
     String pubspecPath = posix.join(projPath, 'pubspec.yaml');
     resourceProvider.newFile(pubspecPath, 'pubspec1');
 
     String proj2Path = '/my/proj2';
     resourceProvider.newFolder(proj2Path);
     String pubspec2Path = posix.join(proj2Path, 'pubspec.yaml');
     resourceProvider.newFile(pubspec2Path, 'pubspec2');
 
@@ skipping 931 matching lines @@
 class TestUriResolver extends UriResolver {
   Map<Uri, Source> uriMap;
 
   TestUriResolver(this.uriMap);
 
   @override
   Source resolveAbsolute(Uri uri) {
     return uriMap[uri];
   }
 }