Formatter: fix for long multiline strings.

pkg/analyzer/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.
 
 library formatter_test;
 
 import 'dart:io';
 
 import 'package:path/path.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 982 matching lines @@
                           'if (true) {\n'
                           '  print("true!");\n'
                           '} else {\n'
                           '  print("false!");\n'
                           '}');
       expectStmtFormatsTo('if (true) print("true!"); else print("false!");',
                           'if (true) print("true!"); else print("false!");',
                           transforms: false);
     });
 
+    test('String - multiline - short - same line', () {
+      expectCUFormatsTo(
+        'main() {\n'
+        '  print("""01234567890123456789012345678901234567890123456789""");\n'
+        '}\n',
+        'main() {\n'
+        '  print("""01234567890123456789012345678901234567890123456789""");\n'
+        '}\n'
+      );
+    });
+
+    test('String - multiline - short - next line', () {
+      expectCUFormatsTo(
+        'main() {\n'
+        '  print("""\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '""");\n'
+        '}\n',
+        'main() {\n'
+        '  print("""\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '""");\n'
+        '}\n'
+      );
+    });
+
+    test('String - multiline - long', () {
+      expectCUFormatsTo(
+        'main() {\n'
+        '  print("""\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '""");\n'
+        '}\n',
+        'main() {\n'
+        '  print("""\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '01234567890123456789012345678901234567890123456789\n'
+        '""");\n'
+        '}\n'
+      );
+    });
+
     // smoketest to ensure we're enforcing the 'no gratuitous linebreaks'
     // opinion
     test('CU (eat newlines)', () {
       expectCUFormatsTo(
         'abstract\n'
         'class\n'
         'A{}',
         'abstract class A {}\n'
       );
     });
@@ skipping 246 matching lines @@
       writer.write('foo');
       writer.indent();
       writer.newline();
       writer.write('bar');
       writer.unindent();
       writer.newline();
       writer.write('baz');
       expect(writer.toString(), equals('foo\n  bar\nbaz'));
     });
 
+    test('write - multiline', () {
+      var writer = new SourceWriter();
+      writer.indent();
+      writer.newline();
+      writer.write('aaa\nbbb\nccc');
+      expect(writer.toString(), equals('\n  aaa\nbbb\nccc'));
+      expect(writer.currentLine.toString(), equals('ccc'));
+    });
+
   });
 
 
 
   /// Line breaker tests
   group('linebreaker', () {
 
     List<Chunk> breakLine(Line line, int maxLength) =>
         new SimpleLineBreaker(maxLength).breakLine(line);
 
@@ skipping 229 matching lines @@
       input += lines[i++] + '\n';
     }
     while(++i < lines.length && !lines[i].startsWith('>>>')) {
       expectedOutput += lines[i] + '\n';
     }
     test('test - (${testIndex++})', () {
       expectClause(input, expectedOutput);
     });
   }
 }