Defer to engine for option-aware context config.

test/driver_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.
 
 @TestOn("vm")
 library analyzer_cli.test.driver;
 
 import 'dart:io';
 
 import 'package:analyzer/plugin/options.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/plugin/plugin_configuration.dart';
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer_cli/src/bootloader.dart';
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:analyzer_cli/src/options.dart';
 import 'package:path/path.dart' as path;
 import 'package:plugin/plugin.dart';
 import 'package:test/test.dart';
 import 'package:yaml/src/yaml_node.dart';
 
 main() {
   group('Driver', () {
+    StringSink savedOutSink, savedErrorSink;
+    int savedExitCode;
+    setUp(() {
+      savedOutSink = outSink;
+      savedErrorSink = errorSink;
+      savedExitCode = exitCode;
+      outSink = new StringBuffer();
+      errorSink = new StringBuffer();
+    });
+    tearDown(() {
+      outSink = savedOutSink;
+      errorSink = savedErrorSink;
+      exitCode = savedExitCode;
+    });
+
     group('options', () {
       test('custom processor', () {
         Driver driver = new Driver();
         TestProcessor processor = new TestProcessor();
         driver.userDefinedPlugins = [new TestPlugin(processor)];
         driver.start([
           '--options',
           'test/data/test_options.yaml',
           'test/data/test_file.dart'
         ]);
         expect(processor.options['test_plugin'], isNotNull);
         expect(processor.exception, isNull);
       });
     });
 
     group('exit codes', () {
+      StringSink savedOutSink, savedErrorSink;
       int savedExitCode;
       ExitHandler savedExitHandler;
       setUp(() {
+        savedOutSink = outSink;
+        savedErrorSink = errorSink;
         savedExitCode = exitCode;
         savedExitHandler = exitHandler;
         exitHandler = (code) => exitCode = code;
+        outSink = new StringBuffer();
+        errorSink = new StringBuffer();
       });
       tearDown(() {
+        outSink = savedOutSink;
+        errorSink = savedErrorSink;
         exitCode = savedExitCode;
         exitHandler = savedExitHandler;
       });
 
       test('fatal hints', () {
-        Driver driver = new Driver();
-        driver.start(['--fatal-hints', 'test/data/file_with_hint.dart']);
+        drive('test/data/file_with_hint.dart', args: ['--fatal-hints']);
         expect(exitCode, 3);
       });
 
       test('not fatal hints', () {
-        Driver driver = new Driver();
-        driver.start(['test/data/file_with_hint.dart']);
+        drive('test/data/file_with_hint.dart');
         expect(exitCode, 0);
       });
 
       test('fatal errors', () {
-        Driver driver = new Driver();
-        driver.start(['test/data/file_with_error.dart']);
+        drive('test/data/file_with_error.dart');
         expect(exitCode, 3);
       });
 
       test('not fatal warnings', () {
-        Driver driver = new Driver();
-        driver.start(['test/data/file_with_warning.dart']);
+        drive('test/data/file_with_warning.dart');
         expect(exitCode, 0);
       });
 
       test('fatal warnings', () {
-        Driver driver = new Driver();
-        driver.start(['--fatal-warnings', 'test/data/file_with_warning.dart']);
+        drive('test/data/file_with_warning.dart', args: ['--fatal-warnings']);
         expect(exitCode, 3);
       });
 
       test('missing options file', () {
-        Driver driver = new Driver();
-        driver.start([
-          '--options',
-          'test/data/NO_OPTIONS_HERE',
-          'test/data/test_file.dart'
-        ]);
+        drive('test/data/test_file.dart', options: 'test/data/NO_OPTIONS_HERE');
         expect(exitCode, 3);
       });
 
       test('missing dart file', () {
-        Driver driver = new Driver();
-        driver.start(['test/data/NO_DART_FILE_HERE.dart']);
+        drive('test/data/NO_DART_FILE_HERE.dart');
         expect(exitCode, 3);
       });
 
       test('part file', () {
-        Driver driver = new Driver();
-        driver.start(['test/data/library_and_parts/part2.dart']);
+        drive('test/data/library_and_parts/part2.dart');
         expect(exitCode, 3);
       });
 
       test('non-dangling part file', () {
         Driver driver = new Driver();
         driver.start([
           'test/data/library_and_parts/lib.dart',
           'test/data/library_and_parts/part1.dart',
         ]);
         expect(exitCode, 0);
@@ skipping 48 matching lines @@
 
       group('default lints', () {
         StringSink savedOutSink;
         Driver driver;
 
         setUp(() {
           savedOutSink = outSink;
           outSink = new StringBuffer();
 
           driver = new Driver();
-          driver.start(['--lints', 'test/data/linter_project/test_file.dart']);
+          driver.start([
+            '--lints',
+            'test/data/linter_project/test_file.dart',
+            '--options',
+            'test/data/linter_project/.analysis_options'
+          ]);
         });
         tearDown(() {
           outSink = savedOutSink;
         });
 
         test('gets default lints', () {
           /// Lints should be enabled.
           expect(driver.context.analysisOptions.lint, isTrue);
 
           /// Default list should include camel_case_types.
           var lintNames = getLints(driver.context).map((r) => r.name);
           expect(lintNames, contains('camel_case_types'));
         });
 
         test('generates lints', () {
           expect(outSink.toString(),
               contains('[lint] Name types using UpperCamelCase.'));
         });
       });
 
-      group('no `--lints` flag', () {
+      group('no `--lints` flag (none in options)', () {
         StringSink savedOutSink;
         Driver driver;
 
         setUp(() {
           savedOutSink = outSink;
           outSink = new StringBuffer();
 
           driver = new Driver();
-          driver.start(['test/data/linter_project/test_file.dart']);
+          driver.start([
+            'test/data/no_lints_project/test_file.dart',
+            '--options',
+            'test/data/no_lints_project/.analysis_options'
+          ]);
         });
         tearDown(() {
           outSink = savedOutSink;
         });
 
         test('lints disabled', () {
           expect(driver.context.analysisOptions.lint, isFalse);
         });
 
         test('no registered lints', () {
@@ skipping 24 matching lines @@
         ''');
       expect(containsLintRuleEntry(options), true);
       options = parseOptions('''
 linter:
  # rules:
     # - foo
         ''');
       expect(containsLintRuleEntry(options), false);
     });
 
+    group('options processing', () {
+      group('error filters', () {
+        StringSink savedOutSink;
+        Driver driver;
+
+        setUp(() {
+          savedOutSink = outSink;
+          outSink = new StringBuffer();
+
+          driver = new Driver();
+          driver.start([
+            'test/data/options_tests_project/test_file.dart',
+            '--options',
+            'test/data/options_tests_project/.analysis_options'
+          ]);
+        });
+        tearDown(() {
+          outSink = savedOutSink;
+        });
+
+        test('filters', () {
+          var filters =
+              driver.context.getConfigurationData(CONFIGURED_ERROR_FILTERS);
+          expect(filters, hasLength(1));
+
+          var unused_error = new AnalysisError(
+              new TestSource(), 0, 1, HintCode.UNUSED_LOCAL_VARIABLE, [
+            ['x']
+          ]);
+          expect(filters.any((filter) => filter(unused_error)), isTrue);
+        });
+
+        test('language config', () {
+          expect(driver.context.analysisOptions.enableSuperMixins, isTrue);
+        });
+      });
+    });
+
     group('in temp directory', () {
       StringSink savedOutSink, savedErrorSink;
       int savedExitCode;
       Directory savedCurrentDirectory;
       Directory tempDir;
       setUp(() {
         savedOutSink = outSink;
         savedErrorSink = errorSink;
         savedExitCode = exitCode;
         outSink = new StringBuffer();
@@ skipping 107 matching lines @@
                   name: 'test_plugin',
                   className: 'MyPlugin',
                   libraryUri: 'my_package/foo.dart')),
               isNull);
         });
       });
     });
   });
 }
 
+const emptyOptionsFile = 'test/data/empty_options.yaml';
+
+/// Start a driver for the given [source], optionally providing additional
+/// [args] and an [options] file path.  The value of [options] defaults to
+/// an empty options file to avoid unwanted configuration from an otherwise
+/// discovered options file.
+void drive(String source,
+        {String options: emptyOptionsFile,
+        List<String> args: const <String>[]}) =>
+    new Driver().start(['--options', options, source]..addAll(args));
+
 Map<String, YamlNode> parseOptions(String src) =>
     new AnalysisOptionsProvider().getOptionsFromString(src);
 
 class TestPlugin extends Plugin {
   TestProcessor processor;
   TestPlugin(this.processor);
 
   @override
   String get uniqueIdentifier => 'test_plugin.core';
 
@@ skipping 16 matching lines @@
   void onError(Exception exception) {
     this.exception = exception;
   }
 
   @override
   void optionsProcessed(
       AnalysisContext context, Map<String, YamlNode> options) {
     this.options = options;
   }
 }
+
+class TestSource implements Source {
+  TestSource();
+
+  @override
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}