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pkg/analyzer/test/src/dart/analysis/driver_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.
 
 library analyzer.test.driver;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 332 matching lines @@
     Future<AnalysisResult> future2 = driver.getResult(testFile);
 
     // Both futures complete, with the same result.
     AnalysisResult result1 = await future1;
     AnalysisResult result2 = await future2;
     expect(result2, same(result1));
     expect(result1.path, testFile);
     expect(result1.unit, isNotNull);
   }
 
+  test_isAddedFile() async {
+    var a = _p('/test/lib/a.dart');
+    var b = _p('/test/lib/b.dart');
+
+    driver.addFile(a);
+    expect(driver.isAddedFile(a), isTrue);
+    expect(driver.isAddedFile(b), isFalse);
+
+    driver.removeFile(a);
+    expect(driver.isAddedFile(a), isFalse);
+    expect(driver.isAddedFile(b), isFalse);
+  }
+
   test_removeFile_changeFile_implicitlyAnalyzed() async {
     var a = _p('/test/lib/a.dart');
     var b = _p('/test/lib/b.dart');
     provider.newFile(
         a,
         r'''
 import 'b.dart';
 var A = B;
 ''');
     provider.newFile(b, 'var B = 1;');
@@ skipping 178 matching lines @@
   @override
   List<int> get(String key) {
     return map[key];
   }
 
   @override
   void put(String key, List<int> bytes) {
     map[key] = bytes;
   }
 }