Unsupported analysis option validation.

pkg/analyzer/test/src/task/options_test.dart

 // Copyright (c) 2015, 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.src.task.options_test;
 
 import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer/task/model.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';
 import '../../utils.dart';
 import '../context/abstract_context.dart';
 
 main() {
   initializeTestEnvironment();
   runReflectiveTests(GenerateOptionsErrorsTaskTest);
+  runReflectiveTests(OptionsFileValidatorTest);
 }
 
 isInstanceOf isGenerateOptionsErrorsTask =
     new isInstanceOf<GenerateOptionsErrorsTask>();
 
 @reflectiveTest
 class GenerateOptionsErrorsTaskTest extends AbstractContextTest {
   final optionsFilePath = '/${AnalysisEngine.ANALYSIS_OPTIONS_FILE}';
 
   Source source;
@@ skipping 43 matching lines @@
 :
 ''';
     AnalysisTarget target = newSource(optionsFilePath, code);
     computeResult(target, ANALYSIS_OPTIONS_ERRORS);
     expect(task, isGenerateOptionsErrorsTask);
     List<AnalysisError> errors = outputs[ANALYSIS_OPTIONS_ERRORS];
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, AnalysisOptionsErrorCode.PARSE_ERROR);
   }
 
+  test_perform_unsupported_analyzer_option() {
+    String code = r'''
+analyzer:
+  not_supported: true
+''';
+    AnalysisTarget target = newSource(optionsFilePath, code);
+    computeResult(target, ANALYSIS_OPTIONS_ERRORS);
+    expect(task, isGenerateOptionsErrorsTask);
+    List<AnalysisError> errors = outputs[ANALYSIS_OPTIONS_ERRORS];
+    expect(errors, hasLength(1));
+    expect(errors[0].errorCode, AnalysisOptionsWarningCode.UNSUPPORTED_OPTION);
+    expect(errors[0].message,
+        "The option 'not_supported' is not supported by analyzer");
+  }
+
   test_perform_OK() {
     String code = r'''
 analyzer:
   strong-mode: true
 ''';
     AnalysisTarget target = newSource(optionsFilePath, code);
     computeResult(target, ANALYSIS_OPTIONS_ERRORS);
     expect(task, isGenerateOptionsErrorsTask);
     expect(outputs[ANALYSIS_OPTIONS_ERRORS], isEmpty);
   }
 }
+
+@reflectiveTest
+class OptionsFileValidatorTest {
+  final OptionsFileValidator validator = new OptionsFileValidator(null);
+  final AnalysisOptionsProvider optionsProvider = new AnalysisOptionsProvider();
+
+  test_analyzer_supported_exclude() {
+    validate(
+        '''
+analyzer:
+  exclude:
+    - test/_data/p4/lib/lib1.dart
+    ''',
+        []);
+  }
+
+  test_analyzer_supported_strong_mode() {
+    validate(
+        '''
+analyzer:
+  strong-mode: true
+    ''',
+        []);
+  }
+
+  test_analyzer_unsupported_option() {
+    validate(
+        '''
+analyzer:
+  not_supported: true
+    ''',
+        [AnalysisOptionsWarningCode.UNSUPPORTED_OPTION]);
+  }
+
+  void validate(String source, List<AnalysisOptionsErrorCode> expected) {
+    var options = optionsProvider.getOptionsFromString(source);
+    var errors = validator.validate(options);
+    expect(errors.map((AnalysisError e) => e.errorCode),
+        unorderedEquals(expected));
+  }
+}