Adding Angular and dependent packages for testing

third_party/pkg/route_hierarchical/test/url_pattern_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 route.url_pattern_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:route_hierarchical/url_pattern.dart';
+
+main() {
+  test('patterns with no groups', () {
+    checkPattern('/', '/', [], ['', 'a', '/a']);
+    checkPattern('a', 'a', [], ['', '/', '/a']);
+  });
+
+  test('patterns with basic groups', () {
+    checkPattern(r'(\w+)', 'ab', ['ab'], ['(ab)', '', ' ']);
+  });
+
+  test('patterns with escaping', () {
+    checkPattern(r'\\', r'\', []);
+    // it's ok to leave a hanging escape?
+    checkPattern(r'\\\', r'\', []);
+    checkPattern(r'\a', r'a', []);
+    checkPattern(r'\(a\)', '(a)', [], ['a']);
+    checkPattern(r'(a\))', 'a)', ['a)'], ['a']);
+    checkPattern(r'(\\w)', r'\w', [r'\w'], [r'\a']);
+  });
+
+  test('patterns with more complicated groups', () {
+    checkPattern(r'/(\w+)', '/foo', ['foo'], ['foo']);
+    checkPattern(r'/(\w+)/(\w+)', '/foo/bar', ['foo', 'bar']);
+    // these are odd cases. maybe we should ban nested groups.
+    checkPattern(r'((\w+))', 'a', ['a', 'a'], ['(a)']);
+    checkPattern(r'((\w+)(\d+))', 'a1', ['a1', 'a', '1'], ['(a1)']);
+  });
+
+  test('disallow ambiguous groups', () {
+    expect(() => new UrlPattern(r'(\w+)(\w+)'), throws);
+  });
+
+  test('disallow unmatched parens', () {
+    expect(() => new UrlPattern('('), throws);
+    expect(() => new UrlPattern(')'), throws);
+    expect(() => new UrlPattern('(()'), throws);
+    expect(() => new UrlPattern('())'), throws);
+  });
+
+  test('patterns with fragments matches hash and path URLs', () {
+    var pattern = new UrlPattern(r'/foo#(\w+)');
+    expect(pattern.matches('/foo#abc'), true);
+    expect(pattern.matches('/foo/abc'), true);
+    expect(pattern.reverse(['abc'], useFragment: true), '/foo#abc');
+    expect(pattern.reverse(['abc'], useFragment: false), '/foo/abc');
+  });
+
+  test('special chars outside groups', () {
+    checkPattern('^', '^', []);
+    checkPattern(r'$', r'$', []);
+    checkPattern('.', '.', [], ['a']);
+    checkPattern('|', '|', [], ['a']);
+    checkPattern('+', '+', [], ['a']);
+    checkPattern('[', '[', [], ['a']);
+    checkPattern(']', ']', [], ['a']);
+    checkPattern('{', '{', [], ['a']);
+    checkPattern('}', '}', [], ['a']);
+  });
+
+  test('matchesNonFragment() only matches the path', () {
+    var pattern = new UrlPattern(r'/foo#(\w+)');
+    expect(pattern.matches('/foo'), false);
+    expect(pattern.matchesNonFragment('/foo'), true);
+    expect(() { new UrlPattern(r'(#)'); }, throws);
+    expect(() { new UrlPattern(r'##'); }, throws);
+  });
+}
+
+/**
+ * Performs the following checks on a UrlPattern constructed from [p]:
+ *  * [url] matches the pattern.
+ *  * Using the pattern to parse [url] produces the arguments in [args].
+ *  * Reversing the pattern with [args] produces the String [url].
+ *  * None of the Strings in [nonMatches] match the pattern.
+ */
+checkPattern(String p, String url, List args, [List nonMatches]) {
+  var pattern = new UrlPattern(p);
+  expect(pattern.matches(url), true);
+  expect(pattern.reverse(args), url);
+  expect(pattern.parse(url), orderedEquals(args));
+  if (nonMatches != null) {
+    for (var url in nonMatches) {
+      expect(pattern.matches(url), false);
+    }
+  }
+}