Regression test for #45 which is doing pretty much what we want the formatter to do already.

test/formatter_test.dart

 // Copyright (c) 2014, 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 dart_style.test.formatter_test;
 
 import 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:unittest/compact_vm_config.dart';
@@ skipping 82 matching lines @@
 
     test('defaults to \\n if there are no newlines', () {
       expect(new DartFormatter().format("var i =1;"),
         equals("var i = 1;\n"));
     });
   });
 }
 
 /// Run tests defined in "*.unit" and "*.stmt" files inside directory [name].
 void testDirectory(String name) {
+  var indentPattern = new RegExp(r"^\(indent (\d+)\)\s*");
+
   var dir = p.join(p.dirname(p.fromUri(Platform.script)), name);
   for (var entry in new Directory(dir).listSync()) {
     if (!entry.path.endsWith(".stmt") && !entry.path.endsWith(".unit")) {
       continue;
     }
 
     group("$name ${p.basename(entry.path)}", () {
       var lines = (entry as File).readAsLinesSync();
 
       // The first line may have a "|" to indicate the page width.
       var pageWidth;
       if (lines[0].endsWith("|")) {
         pageWidth = lines[0].indexOf("|");
         lines = lines.skip(1).toList();
       }
 
       var i = 0;
       while (i < lines.length) {
         var description = lines[i++].replaceAll(">>>", "").trim();
+
+        // Let the test specify a leading indentation. This is handy for
+        // regression tests which often come from a chunk of nested code.
+        var leadingIndent = 0;
+        var indentMatch = indentPattern.firstMatch(description);
+        if (indentMatch != null) {
+          // The test specifies it in spaces, but the formatter expects levels.
+          leadingIndent = int.parse(indentMatch[1]) ~/ 2;
+          description = description.substring(indentMatch.end);
+        }
+
         if (description == "") {
           description = "line ${i + 1}";
         } else {
           description = "line ${i + 1}: $description";
         }
 
         var input = "";
         while (!lines[i].startsWith("<<<")) {
           input += lines[i++] + "\n";
         }
 
         var expectedOutput = "";
         while (++i < lines.length && !lines[i].startsWith(">>>")) {
           expectedOutput += lines[i] + "\n";
         }
 
-        if (description.contains("SKIP")) {
-          print("SKIP: $description");
-          continue;
-        }
-
         test(description, () {
-          var formatter = new DartFormatter(pageWidth: pageWidth);
+          var formatter = new DartFormatter(
+              pageWidth: pageWidth, indent: leadingIndent);
 
           var result;
           if (p.extension(entry.path) == ".stmt") {
             result = formatter.formatStatement(input) + "\n";
           } else {
             result = formatter.format(input);
           }
 
           expect(result, equals(expectedOutput));
         });
@@ skipping 46 matching lines @@
           '  A() {\n'
           '  }\n'
           '}\n',
           'class A {\n'
           '  A();\n'
           '}\n'
       );
     });
 
 */