Don't include *.yaml files in 'analysis.analyzedFiles' notification.

pkg/analysis_server/test/analysis/notification_analyzedFiles_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.
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
+import 'package:analyzer/file_system/file_system.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../analysis_abstract.dart';
 import '../mocks.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisNotificationAnalyzedFilesTest);
   });
 }
 
 @reflectiveTest
 class AnalysisNotificationAnalyzedFilesTest extends AbstractAnalysisTest {
   List<String> analyzedFiles;
   bool analyzedFilesReceived = false;
 
   void assertHasFile(String filePath) {
     expect(analyzedFilesReceived, isTrue);
     expect(analyzedFiles, contains(filePath));
   }
 
+  void assertHasNoFile(String filePath) {
+    expect(analyzedFilesReceived, isTrue);
+    expect(analyzedFiles, isNot(contains(filePath)));
+  }
+
   Future<Null> prepareAnalyzedFiles() async {
     addGeneralAnalysisSubscription(GeneralAnalysisService.ANALYZED_FILES);
     await pumpEventQueue();
   }
 
   void processNotification(Notification notification) {
     if (notification.event == ANALYSIS_NOTIFICATION_ANALYZED_FILES) {
       AnalysisAnalyzedFilesParams params =
           new AnalysisAnalyzedFilesParams.fromNotification(notification);
       analyzedFilesReceived = true;
@@ skipping 17 matching lines @@
   }
 
   test_beforeAnalysis() async {
     addTestFile('''
 class A {}
 ''');
     await prepareAnalyzedFiles();
     assertHasFile(testFile);
   }
 
+  test_beforeAnalysis_excludeYamlFiles() async {
+    File yamlFile = resourceProvider
+        .getFolder(projectPath)
+        .getChildAssumingFile('sample.yaml');
+    yamlFile.writeAsStringSync('');
+    addTestFile('''
+class A {}
+''');
+    await prepareAnalyzedFiles();
+    assertHasFile(testFile);
+    assertHasNoFile(yamlFile.path);
+  }
+
   test_insignificant_change() async {
     // Making a change that doesn't affect the set of reachable files should
     // not trigger the notification to be re-sent.
     addTestFile('class A {}');
     await prepareAnalyzedFiles();
     expect(analyzedFilesReceived, isTrue);
 
     analyzedFilesReceived = false;
     modifyTestFile('class B {}');
     await prepareAnalyzedFiles();
@@ skipping 26 matching lines @@
     analyzedFilesReceived = false;
     modifyTestFile('import "/foo.dart";');
     await prepareAnalyzedFiles();
     assertHasFile('/foo.dart');
   }
 
   void unsubscribeAnalyzedFiles() {
     removeGeneralAnalysisSubscription(GeneralAnalysisService.ANALYZED_FILES);
   }
 }