Add Bob's path library to pub.

utils/tests/pub/path/path_posix_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 '../../../../pkg/unittest/lib/unittest.dart';
+import '../../../pub/path.dart' as path;
+
+main() {
+  var builder = new path.Builder(style: path.Style.posix, root: '/root/path');
+
+  if (new path.Builder().style == path.Style.posix) {
+    group('absolute', () {
+      expect(path.absolute('a/b.txt'), path.join(path.current, 'a/b.txt'));
+      expect(path.absolute('/a/b.txt'), '/a/b.txt');
+    });
+  }
+
+  test('separator', () {
+    expect(builder.separator, '/');
+  });
+
+  test('extension', () {
+    expect(builder.extension(''), '');
+    expect(builder.extension('foo.dart'), '.dart');
+    expect(builder.extension('foo.dart.js'), '.js');
+    expect(builder.extension('a.b/c'), '');
+    expect(builder.extension('a.b/c.d'), '.d');
+    expect(builder.extension('~/.bashrc'), '');
+    expect(builder.extension(r'a.b\c'), r'.b\c');
+  });
+
+  test('filename', () {
+    expect(builder.filename(''), '');
+    expect(builder.filename('a'), 'a');
+    expect(builder.filename('a/b'), 'b');
+    expect(builder.filename('a/b/c'), 'c');
+    expect(builder.filename('a/b.c'), 'b.c');
+    expect(builder.filename('a/'), '');
+    expect(builder.filename('a/.'), '.');
+    expect(builder.filename(r'a/b\c'), r'b\c');
+  });
+
+  test('filenameWithoutExtension', () {
+    expect(builder.filenameWithoutExtension(''), '');
+    expect(builder.filenameWithoutExtension('a'), 'a');
+    expect(builder.filenameWithoutExtension('a/b'), 'b');
+    expect(builder.filenameWithoutExtension('a/b/c'), 'c');
+    expect(builder.filenameWithoutExtension('a/b.c'), 'b');
+    expect(builder.filenameWithoutExtension('a/'), '');
+    expect(builder.filenameWithoutExtension('a/.'), '.');
+    expect(builder.filenameWithoutExtension(r'a/b\c'), r'b\c');
+    expect(builder.filenameWithoutExtension('a/.bashrc'), '.bashrc');
+    expect(builder.filenameWithoutExtension('a/b/c.d.e'), 'c.d');
+  });
+
+  test('isAbsolute', () {
+    expect(builder.isAbsolute(''), false);
+    expect(builder.isAbsolute('a'), false);
+    expect(builder.isAbsolute('a/b'), false);
+    expect(builder.isAbsolute('/a'), true);
+    expect(builder.isAbsolute('/a/b'), true);
+    expect(builder.isAbsolute('~'), false);
+    expect(builder.isAbsolute('.'), false);
+    expect(builder.isAbsolute('../a'), false);
+    expect(builder.isAbsolute('C:/a'), false);
+    expect(builder.isAbsolute(r'C:\a'), false);
+    expect(builder.isAbsolute(r'\\a'), false);
+  });
+
+  test('isRelative', () {
+    expect(builder.isRelative(''), true);
+    expect(builder.isRelative('a'), true);
+    expect(builder.isRelative('a/b'), true);
+    expect(builder.isRelative('/a'), false);
+    expect(builder.isRelative('/a/b'), false);
+    expect(builder.isRelative('~'), true);
+    expect(builder.isRelative('.'), true);
+    expect(builder.isRelative('../a'), true);
+    expect(builder.isRelative('C:/a'), true);
+    expect(builder.isRelative(r'C:\a'), true);
+    expect(builder.isRelative(r'\\a'), true);
+  });
+
+  group('join', () {
+    test('allows up to eight parts', () {
+      expect(builder.join('a'), 'a');
+      expect(builder.join('a', 'b'), 'a/b');
+      expect(builder.join('a', 'b', 'c'), 'a/b/c');
+      expect(builder.join('a', 'b', 'c', 'd'), 'a/b/c/d');
+      expect(builder.join('a', 'b', 'c', 'd', 'e'), 'a/b/c/d/e');
+      expect(builder.join('a', 'b', 'c', 'd', 'e', 'f'), 'a/b/c/d/e/f');
+      expect(builder.join('a', 'b', 'c', 'd', 'e', 'f', 'g'), 'a/b/c/d/e/f/g');
+      expect(builder.join('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'),
+          'a/b/c/d/e/f/g/h');
+    });
+
+    test('does not add separator if a part ends in one', () {
+      expect(builder.join('a/', 'b', 'c/', 'd'), 'a/b/c/d');
+      expect(builder.join('a\\', 'b'), r'a\/b');
+    });
+
+    test('ignores parts before an absolute path', () {
+      expect(builder.join('a', '/b', '/c', 'd'), '/c/d');
+      expect(builder.join('a', r'c:\b', 'c', 'd'), r'a/c:\b/c/d');
+      expect(builder.join('a', r'\\b', 'c', 'd'), r'a/\\b/c/d');
+    });
+  });
+
+  group('normalize', () {
+    test('simple cases', () {
+      expect(builder.normalize(''), '');
+      expect(builder.normalize('.'), '.');
+      expect(builder.normalize('..'), '..');
+      expect(builder.normalize('a'), 'a');
+      expect(builder.normalize('/'), '/');
+      expect(builder.normalize(r'\'), r'\');
+    });
+
+    test('collapses redundant separators', () {
+      expect(builder.normalize(r'a/b/c'), r'a/b/c');
+      expect(builder.normalize(r'a//b///c////d'), r'a/b/c/d');
+    });
+
+    test('does not collapse separators for other platform', () {
+      expect(builder.normalize(r'a\\b\\\c'), r'a\\b\\\c');
+    });
+
+    test('eliminates "." parts', () {
+      expect(builder.normalize('./'), '.');
+      expect(builder.normalize('/.'), '/');
+      expect(builder.normalize('/./'), '/');
+      expect(builder.normalize('./.'), '.');
+      expect(builder.normalize('a/./b'), 'a/b');
+      expect(builder.normalize('a/.b/c'), 'a/.b/c');
+      expect(builder.normalize('a/././b/./c'), 'a/b/c');
+      expect(builder.normalize('././a'), 'a');
+      expect(builder.normalize('a/./.'), 'a');
+    });
+
+    test('eliminates ".." parts', () {
+      expect(builder.normalize('..'), '..');
+      expect(builder.normalize('../'), '..');
+      expect(builder.normalize('../../..'), '../../..');
+      expect(builder.normalize('../../../'), '../../..');
+      expect(builder.normalize('/..'), '/');
+      expect(builder.normalize('/../../..'), '/');
+      expect(builder.normalize('/../../../a'), '/a');
+      expect(builder.normalize('a/..'), '.');
+      expect(builder.normalize('a/b/..'), 'a');
+      expect(builder.normalize('a/../b'), 'b');
+      expect(builder.normalize('a/./../b'), 'b');
+      expect(builder.normalize('a/b/c/../../d/e/..'), 'a/d');
+      expect(builder.normalize('a/b/../../../../c'), '../../c');
+    });
+
+    test('does not walk before root on absolute paths', () {
+      expect(builder.normalize('..'), '..');
+      expect(builder.normalize('../'), '..');
+      expect(builder.normalize('/..'), '/');
+      expect(builder.normalize('a/..'), '.');
+      expect(builder.normalize('a/b/..'), 'a');
+      expect(builder.normalize('a/../b'), 'b');
+      expect(builder.normalize('a/./../b'), 'b');
+      expect(builder.normalize('a/b/c/../../d/e/..'), 'a/d');
+      expect(builder.normalize('a/b/../../../../c'), '../../c');
+    });
+
+    test('removes trailing separators', () {
+      expect(builder.normalize('./'), '.');
+      expect(builder.normalize('.//'), '.');
+      expect(builder.normalize('a/'), 'a');
+      expect(builder.normalize('a/b/'), 'a/b');
+      expect(builder.normalize('a/b///'), 'a/b');
+    });
+  });
+
+  group('relative', () {
+    group('from absolute root', () {
+      test('given absolute path in root', () {
+        expect(builder.relative('/'), '../..');
+        expect(builder.relative('/root'), '..');
+        expect(builder.relative('/root/path'), '.');
+        expect(builder.relative('/root/path/a'), 'a');
+        expect(builder.relative('/root/path/a/b.txt'), 'a/b.txt');
+        expect(builder.relative('/root/a/b.txt'), '../a/b.txt');
+      });
+
+      test('given absolute path outside of root', () {
+        expect(builder.relative('/a/b'), '../../a/b');
+        expect(builder.relative('/root/path/a'), 'a');
+        expect(builder.relative('/root/path/a/b.txt'), 'a/b.txt');
+        expect(builder.relative('/root/a/b.txt'), '../a/b.txt');
+      });
+
+      test('given relative path', () {
+        // The path is considered relative to the root, so it basically just
+        // normalizes.
+        expect(builder.relative(''), '.');
+        expect(builder.relative('.'), '.');
+        expect(builder.relative('a'), 'a');
+        expect(builder.relative('a/b.txt'), 'a/b.txt');
+        expect(builder.relative('../a/b.txt'), '../a/b.txt');
+        expect(builder.relative('a/./b/../c.txt'), 'a/c.txt');
+      });
+    });
+
+    group('from relative root', () {
+      var r = new path.Builder(style: path.Style.posix, root: 'foo/bar');
+
+      // These tests rely on the current working directory, so don't do the
+      // right thing if you run them on the wrong platform.
+      if (io.Platform.operatingSystem != 'windows') {
+        test('given absolute path', () {
+          var b = new path.Builder(style: path.Style.posix);
+          expect(r.relative('/'), b.join(b.relative('/'), '../..'));
+          expect(r.relative('/a/b'), b.join(b.relative('/'), '../../a/b'));
+        });
+      }
+
+      test('given relative path', () {
+        // The path is considered relative to the root, so it basically just
+        // normalizes.
+        expect(r.relative(''), '.');
+        expect(r.relative('.'), '.');
+        expect(r.relative('..'), '..');
+        expect(r.relative('a'), 'a');
+        expect(r.relative('a/b.txt'), 'a/b.txt');
+        expect(r.relative('../a/b.txt'), '../a/b.txt');
+        expect(r.relative('a/./b/../c.txt'), 'a/c.txt');
+      });
+    });
+  });
+
+  group('resolve', () {
+    test('allows up to seven parts', () {
+      expect(builder.resolve('a'), '/root/path/a');
+      expect(builder.resolve('a', 'b'), '/root/path/a/b');
+      expect(builder.resolve('a', 'b', 'c'), '/root/path/a/b/c');
+      expect(builder.resolve('a', 'b', 'c', 'd'), '/root/path/a/b/c/d');
+      expect(builder.resolve('a', 'b', 'c', 'd', 'e'), '/root/path/a/b/c/d/e');
+      expect(builder.resolve('a', 'b', 'c', 'd', 'e', 'f'),
+          '/root/path/a/b/c/d/e/f');
+      expect(builder.resolve('a', 'b', 'c', 'd', 'e', 'f', 'g'),
+          '/root/path/a/b/c/d/e/f/g');
+    });
+
+    test('does not add separator if a part ends in one', () {
+      expect(builder.resolve('a/', 'b', 'c/', 'd'), '/root/path/a/b/c/d');
+      expect(builder.resolve(r'a\', 'b'), r'/root/path/a\/b');
+    });
+
+    test('ignores parts before an absolute path', () {
+      expect(builder.resolve('a', '/b', '/c', 'd'), '/c/d');
+      expect(builder.resolve('a', r'c:\b', 'c', 'd'), r'/root/path/a/c:\b/c/d');
+      expect(builder.resolve('a', r'\\b', 'c', 'd'), r'/root/path/a/\\b/c/d');
+    });
+  });
+
+  test('withoutExtension', () {
+    expect(builder.withoutExtension(''), '');
+    expect(builder.withoutExtension('a'), 'a');
+    expect(builder.withoutExtension('.a'), '.a');
+    expect(builder.withoutExtension('a.b'), 'a');
+    expect(builder.withoutExtension('a/b.c'), 'a/b');
+    expect(builder.withoutExtension('a/b.c.d'), 'a/b.c');
+    expect(builder.withoutExtension('a/'), 'a/');
+    expect(builder.withoutExtension('a/b/'), 'a/b/');
+    expect(builder.withoutExtension('a/.'), 'a/.');
+    expect(builder.withoutExtension('a/.b'), 'a/.b');
+    expect(builder.withoutExtension('a.b/c'), 'a.b/c');
+    expect(builder.withoutExtension(r'a/b\c'), r'a/b\c');
+    expect(builder.withoutExtension(r'a/b\c.d'), r'a/b\c');
+  });
+}