Formatter check-point (blank-space preservation experiment).

pkg/analyzer_experimental/test/services/formatter_test.dart

 // Copyright (c) 2013, 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.
 
 import 'package:unittest/unittest.dart';
 
 import 'package:analyzer_experimental/src/generated/ast.dart';
 import 'package:analyzer_experimental/src/generated/scanner.dart';
 import 'package:analyzer_experimental/src/services/formatter.dart';
 import 'package:analyzer_experimental/src/services/formatter_impl.dart';
 import 'package:analyzer_experimental/src/services/writer.dart';
 
 main() {
 
   /// Formatter tests
   group('formatter', () {
 
     test('failed parse', () {
       var formatter = new CodeFormatter();
       expect(() => formatter.format(CodeKind.COMPILATION_UNIT, '~'),
                    throwsA(new isInstanceOf<FormatterException>()));
     });
 
     test('CU (1)', () {
       expectCUFormatsTo(
           'class A  {\n'
           '}',
           'class A {\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (2)', () {
       expectCUFormatsTo(
           'class      A  {  \n'
           '}',
           'class A {\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (3)', () {
       expectCUFormatsTo(
           'class A {\n'
           '  }',
           'class A {\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (4)', () {
       expectCUFormatsTo(
           ' class A {\n'
           '}',
           'class A {\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (method indent)', () {
       expectCUFormatsTo(
           'class A {\n'
           'void x(){\n'
           '}\n'
           '}',
           'class A {\n'
           '  void x() {\n'
           '  }\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (method indent - 2)', () {
       expectCUFormatsTo(
           'class A {\n'
           ' static  bool x(){ return true; }\n'
           ' }',
           'class A {\n'
           '  static bool x() {\n'
           '    return true;\n'
           '  }\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (method indent - 3)', () {
       expectCUFormatsTo(
           'class A {\n'
           ' int x() =>   42   + 3 ;  \n'
           '   }',
           'class A {\n'
           '  int x() => 42 + 3;\n'
-          '}'
+          '}\n'
         );
     });
 
     test('CU (method indent - 4)', () {
       expectCUFormatsTo(
           'class A {\n'
           ' int x() { \n'
           'if (true) {return 42;\n'
           '} else { return false; }\n'
           '   }'
           '}',
           'class A {\n'
           '  int x() {\n'
           '    if (true) {\n'
           '      return 42;\n'
           '    } else {\n'
           '      return false;\n'
           '    }\n'
           '  }\n'
-          '}'
+          '}\n'
         );
     });
 
+    test('CU (multiple members)', () {
+      expectCUFormatsTo(
+          'class A {\n'
+          '}\n'
+          'class B {\n'
+          '}\n',
+          'class A {\n'
+          '}\n'
+          'class B {\n'
+          '}\n'
+        );
+    });
+
+    test('CU (multiple members w/blanks)', () {
+      expectCUFormatsTo(
+          'class A {\n'
+          '}\n\n'
+          'class B {\n'
+          '}\n',
+          'class A {\n'
+          '}\n\n'
+          'class B {\n'
+          '}\n'
+        );
+    });
+    
+
     test('stmt', () {
       expectStmtFormatsTo(
          'if (true){\n'
          'if (true){\n'
          'if (true){\n'
          'return true;\n'
          '} else{\n'
          'return false;\n'
          '}\n'
          '}\n'
@@ skipping 139 matching lines @@
 String formatCU(src, {options: const FormatterOptions()}) =>
     new CodeFormatter(options).format(CodeKind.COMPILATION_UNIT, src);
 
 String formatStatement(src, {options: const FormatterOptions()}) =>
     new CodeFormatter(options).format(CodeKind.STATEMENT, src);
 
 expectCUFormatsTo(src, expected) => expect(formatCU(src), equals(expected));
 
 expectStmtFormatsTo(src, expected) => expect(formatStatement(src),
     equals(expected));