Suppress lints on synthetic nodes/tokens (#193).

test/rule_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 linter.test.rule;
 
 import 'dart:io';
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 170 matching lines @@
         'foo_',
         'foo.bar_baz.bang',
         //See: https://github.com/flutter/flutter/pull/1996
         'pointycastle.impl.ec_domain_parameters.gostr3410_2001_cryptopro_a',
         'a.b',
         'a.b.c',
         'p2.src.acme'
       ];
       testEach(good, isLowerCaseUnderScoreWithDots, isTrue);
 
-      var bad = [
-        'Foo',
-        'fooBar.',
-        '.foo_Bar',
-        '_f',
-        'F_B',
-        'JS',
-        'JSON'
-      ];
+      var bad = ['Foo', 'fooBar.', '.foo_Bar', '_f', 'F_B', 'JS', 'JSON'];
       testEach(bad, isLowerCaseUnderScoreWithDots, isFalse);
     });
     group('lowerCamelCase', () {
       var good = ['fooBar', 'foo', 'f', 'f1', '_f', '_foo', '_'];
       testEach(good, isLowerCamelCase, isTrue);
 
       var bad = ['Foo', 'foo_', 'foo_bar'];
       testEach(bad, isLowerCamelCase, isFalse);
     });
     group('libary_name_prefixes', () {
@@ skipping 69 matching lines @@
       expect(
           () => expect(new Annotation('Message', ErrorType.LINT, 1),
               matchesAnnotation('Message2', ErrorType.LINT, 1)),
           throwsA(new isInstanceOf<TestFailure>()));
       expect(
           () => expect(new Annotation('Message', ErrorType.LINT, 1),
               matchesAnnotation('Message', ErrorType.LINT, 2)),
           throwsA(new isInstanceOf<TestFailure>()));
     });
   });
+
+  group('reporting', () {
+    //https://github.com/dart-lang/linter/issues/193
+    group('ignore synthetic nodes', () {
+      String path = p.join('test', '_data', 'synthetic', 'synthetic.dart');
+      File file = new File(path);
+      testRule('non_constant_identifier_names', file);
+    });
+  });
 }
 
 /// Handy for debugging.
 defineSoloRuleTest(String ruleToTest) {
   for (var entry in new Directory(ruleDir).listSync()) {
     if (entry is! File || !isDartFile(entry)) continue;
     var ruleName = p.basenameWithoutExtension(entry.path);
     if (ruleName == ruleToTest) {
       testRule(ruleName, entry);
     }
@@ skipping 161 matching lines @@
 
 class NoFilter implements LintFilter {
   @override
   bool filter(AnalysisError lint) => false;
 }
 
 class ResultReporter extends DetailedReporter {
   ResultReporter(Iterable<AnalysisErrorInfo> errors)
       : super(errors, new NoFilter(), stdout);
 }