Option support for `enableSuperMixins` (and more).

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/engine.dart' hide AnalysisContextImpl;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/model.dart';
 import 'package:unittest/unittest.dart';
+import 'package:yaml/yaml.dart';
 
 import '../../generated/test_support.dart';
 import '../../reflective_tests.dart';
 import '../../utils.dart';
 import '../context/abstract_context.dart';
 
 main() {
   initializeTestEnvironment();
+  runReflectiveTests(ContextConfigurationTest);
   runReflectiveTests(GenerateOptionsErrorsTaskTest);
   runReflectiveTests(OptionsFileValidatorTest);
 }
 
 isInstanceOf isGenerateOptionsErrorsTask =
     new isInstanceOf<GenerateOptionsErrorsTask>();
 
 @reflectiveTest
+class ContextConfigurationTest extends AbstractContextTest {
+  final AnalysisOptionsProvider optionsProvider = new AnalysisOptionsProvider();
+
+  AnalysisOptions get analysisOptions => context.analysisOptions;
+
+  configureContext(String optionsSource) =>
+      configureContextOptions(context, parseOptions(optionsSource));
+
+  Map<String, YamlNode> parseOptions(String source) =>
+      optionsProvider.getOptionsFromString(source);
+
+  test_configure_enableSuperMixins() {
+    configureContext('''
+analyzer:
+  language:
+    enableSuperMixins: true
+''');
+    expect(analysisOptions.enableSuperMixins, true);
+  }
+
+  test_configure_error_filters() {
+    configureContext('''
+analyzer:
+  errors:
+    invalid_assignment: ignore
+    unused_local_variable: ignore
+''');
+
+    List<ErrorFilter> filters =
+        context.getConfigurationData(CONFIGURED_ERROR_FILTERS);
+    expect(filters, hasLength(2));
+
+    var unused_error = new AnalysisError(
+        new TestSource(), 0, 1, HintCode.UNUSED_LOCAL_VARIABLE, [
+      ['x']
+    ]);
+    var invalid_assignment_error =
+        new AnalysisError(new TestSource(), 0, 1, HintCode.INVALID_ASSIGNMENT, [
+      ['x'],
+      ['y']
+    ]);
+
+    expect(filters.any((filter) => filter(unused_error)), isTrue);
+    expect(filters.any((filter) => filter(invalid_assignment_error)), isTrue);
+  }
+
+  test_configure_strong_mode() {
+    configureContext('''
+analyzer:
+  strong-mode: true
+''');
+    expect(analysisOptions.strongMode, true);
+  }
+}
+
+@reflectiveTest
 class GenerateOptionsErrorsTaskTest extends AbstractContextTest {
   final optionsFilePath = '/${AnalysisEngine.ANALYSIS_OPTIONS_FILE}';
 
   Source source;
   LineInfo lineInfo(String source) =>
       GenerateOptionsErrorsTask.computeLineInfo(source);
 
   @override
   setUp() {
     super.setUp();
@@ skipping 81 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,
         AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITH_LEGAL_VALUES);
     expect(
         errors[0].message,
-        "The option 'not_supported' is not supported by analyzer, "
-        "supported values are 'errors', 'exclude', 'plugins' and 'strong-mode'");
+        "The option 'not_supported' is not supported by analyzer, supported "
+        "values are 'errors', 'exclude', 'language', 'plugins' and 'strong-mode'");
   }
 }
 
 @reflectiveTest
 class OptionsFileValidatorTest {
   final OptionsFileValidator validator =
       new OptionsFileValidator(new TestSource());
   final AnalysisOptionsProvider optionsProvider = new AnalysisOptionsProvider();
 
   test_analyzer_error_code_supported() {
     validate(
         '''
 analyzer:
   errors:
     unused_local_variable: ignore
-    ''',
+''',
         []);
   }
 
   test_analyzer_error_code_supported_bad_value() {
     validate(
         '''
 analyzer:
   errors:
     unused_local_variable: ftw
     ''',
         [AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITH_LEGAL_VALUES]);
   }
 
   test_analyzer_error_code_unsupported() {
     validate(
         '''
 analyzer:
   errors:
     not_supported: ignore
     ''',
         [AnalysisOptionsWarningCode.UNRECOGNIZED_ERROR_CODE]);
   }
 
+  test_analyzer_language_supported() {
+    validate(
+        '''
+analyzer:
+  language:
+    enableSuperMixins: true
+''',
+        []);
+  }
+
+  test_analyzer_language_unsupported_key() {
+    validate(
+        '''
+analyzer:
+  language:
+    unsupported: true
+''',
+        [AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITH_LEGAL_VALUE]);
+  }
+
+  test_analyzer_language_unsupported_value() {
+    validate(
+        '''
+analyzer:
+  language:
+    enableSuperMixins: foo
+''',
+        [AnalysisOptionsWarningCode.UNSUPPORTED_VALUE]);
+  }
+
   test_analyzer_supported_exclude() {
     validate(
         '''
 analyzer:
   exclude:
     - test/_data/p4/lib/lib1.dart
     ''',
         []);
   }
 
@@ skipping 34 matching lines @@
         [AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITH_LEGAL_VALUE]);
   }
 
   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));
   }
 }