Add path.joinAll.

pkg/path/test/path_windows_test.dart

 // Copyright (c) 2012, 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 path_test;
 
 import 'dart:io' as io;
 
 import 'package:unittest/unittest.dart';
 import 'package:path/path.dart' as path;
@@ skipping 162 matching lines @@
       expect(builder.join('a', null), equals('a'));
       expect(builder.join('a', 'b', 'c', null, null), equals(r'a\b\c'));
     });
 
     test('disallows intermediate nulls', () {
       expect(() => builder.join('a', null, 'b'), throwsArgumentError);
       expect(() => builder.join(null, 'a'), throwsArgumentError);
     });
   });
 
+  group('joinAll', () {
+    test('allows more than eight parts', () {
+      expect(builder.joinAll(['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i']),
+          r'a\b\c\d\e\f\g\h\i');
+    });
+
+    test('does not add separator if a part ends or begins in one', () {
+      expect(builder.joinAll([r'a\', 'b', r'c\', 'd']), r'a\b\c\d');
+      expect(builder.joinAll(['a/', 'b']), r'a/b');
+      expect(builder.joinAll(['a', '/b']), 'a/b');
+      expect(builder.joinAll(['a', r'\b']), r'a\b');
+    });
+
+    test('ignores parts before an absolute path', () {
+      expect(builder.joinAll(['a', '/b', '/c', 'd']), r'a/b/c\d');
+      expect(builder.joinAll(['a', r'c:\b', 'c', 'd']), r'c:\b\c\d');
+      expect(builder.joinAll(['a', r'\\b', r'\\c', 'd']), r'\\c\d');
+    });
+
+    test('disallows intermediate nulls', () {
+      expect(() => builder.joinAll(['a', null, 'b']), throwsArgumentError);
+      expect(() => builder.joinAll([null, 'a']), throwsArgumentError);
+    });
+  });
+
   group('split', () {
     test('simple cases', () {
       expect(builder.split(''), []);
       expect(builder.split('.'), ['.']);
       expect(builder.split('..'), ['..']);
       expect(builder.split('foo'), equals(['foo']));
       expect(builder.split(r'foo\bar.txt'), equals(['foo', 'bar.txt']));
       expect(builder.split(r'foo\bar/baz'), equals(['foo', 'bar', 'baz']));
       expect(builder.split(r'foo\..\bar\.\baz'),
           equals(['foo', '..', 'bar', '.', 'baz']));
@@ skipping 212 matching lines @@
     expect(builder.withoutExtension(r'a\.'), r'a\.');
     expect(builder.withoutExtension(r'a\.b'), r'a\.b');
     expect(builder.withoutExtension(r'a.b\c'), r'a.b\c');
     expect(builder.withoutExtension(r'a/b.c/d'), r'a/b.c/d');
     expect(builder.withoutExtension(r'a\b/c'), r'a\b/c');
     expect(builder.withoutExtension(r'a\b/c.d'), r'a\b/c');
     expect(builder.withoutExtension(r'a.b/c'), r'a.b/c');
     expect(builder.withoutExtension(r'a\b.c\'), r'a\b\');
   });
 }