Some improvements to the command-line analyzer's output.

pkg/analyzer_cli/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.
 
 library analyzer_cli.test.driver;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:analyzer/error/error.dart';
@@ skipping 125 matching lines @@
             expect(driver.context.analysisOptions.lint, isTrue);
 
             /// The analysis options file only specifies 'camel_case_types'.
             var lintNames = getLints(driver.context).map((r) => r.name);
             expect(lintNames, orderedEquals(['camel_case_types']));
           });
 
           test('generates lints', () async {
             await runLinter();
             expect(outSink.toString(),
-                contains('[lint] Name types using UpperCamelCase.'));
+                contains('[lint] Name types using UpperCamelCase'));
           });
         });
 
         group('default lints - $designator', () {
           // Shared lint command.
           Future<Null> runLinter() async {
             return await drive('data/linter_project/test_file.dart',
                 options: 'data/linter_project/$optionsFileName',
                 args: ['--lints']);
           }
 
           test('gets default lints', () async {
             await runLinter();
 
             /// 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', () async {
             await runLinter();
             expect(outSink.toString(),
-                contains('[lint] Name types using UpperCamelCase.'));
+                contains('[lint] Name types using UpperCamelCase'));
           });
         });
 
         group('no `--lints` flag (none in options) - $designator', () {
           // Shared lint command.
           Future<Null> runLinter() async {
             return await drive('data/no_lints_project/test_file.dart',
                 options: 'data/no_lints_project/$optionsFileName');
           }
 
@@ skipping 128 matching lines @@
           path.join(testDir, 'lib', 'test_file.dart'),
           args: [
             '--fatal-warnings',
             '--packages',
             path.join(testDir, '_packages'),
           ],
           options: path.join(testDir, '.analysis_options'),
         );
         expect(exitCode, 3);
         expect(outSink.toString(),
-            contains('but doesn\'t end with a return statement.'));
+            contains('but doesn\'t end with a return statement'));
         expect(outSink.toString(), contains('isn\'t defined'));
-        expect(outSink.toString(), contains('Avoid empty else statements.'));
+        expect(outSink.toString(), contains('Avoid empty else statements'));
       });
 
       test('test strong SDK', () async {
         String testDir = path.join(testDirectory, 'data', 'strong_sdk');
         await drive(path.join(testDir, 'main.dart'), args: ['--strong']);
         expect(driver.context.analysisOptions.strongMode, isTrue);
         expect(outSink.toString(), contains('No issues found'));
         expect(exitCode, 0);
       });
     });
@@ skipping 193 matching lines @@
 
 ErrorProcessor processorFor(AnalysisError error) =>
     processors.firstWhere((p) => p.appliesTo(error));
 
 class TestSource implements Source {
   TestSource();
 
   @override
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }