text: // Copyright 2009 The Closure Library Authors. All Rights Reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS-IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  goog.provide('goog.uri.utilsTest');
  goog.setTestOnly('goog.uri.utilsTest');
  
  goog.require('goog.functions');
  goog.require('goog.string');
  goog.require('goog.testing.PropertyReplacer');
  goog.require('goog.testing.jsunit');
  goog.require('goog.uri.utils');
  
  var utils = goog.uri.utils;
  var stubs = new goog.testing.PropertyReplacer();
  
  
  function setUpPage() {
    goog.string.getRandomString = goog.functions.constant('RANDOM');
  }
  
  function tearDown() {
    stubs.reset();
  }
  
  function testSplit() {
    var uri = 'http://www.google.com:80/path%20path+path?q=query&hl=en#fragment';
    assertEquals('http', utils.getScheme(uri));
    assertNull(utils.getUserInfoEncoded(uri));
    assertNull(utils.getUserInfo(uri));
    assertEquals('www.google.com', utils.getDomainEncoded(uri));
    assertEquals('www.google.com', utils.getDomain(uri));
    assertEquals(80, utils.getPort(uri));
    assertEquals('/path%20path+path', utils.getPathEncoded(uri));
    assertEquals('/path path+path', utils.getPath(uri));
    assertEquals('q=query&hl=en', utils.getQueryData(uri));
    assertEquals('fragment', utils.getFragmentEncoded(uri));
    assertEquals('fragment', utils.getFragment(uri));
  
    assertEquals(utils.getDomain('http://[2607:f8b0:4006:802::1006]'),
        '[2607:f8b0:4006:802::1006]');
    assertEquals(utils.getDomain('http://[2607:f8b0:4006:802::1006]:80'),
        '[2607:f8b0:4006:802::1006]');
    assertEquals(utils.getPort('http://[2607:f8b0:4006:802::1006]:80'), 80);
    assertEquals(utils.getDomain('http://[2607]:80/?q=]'), '[2607]');
    assertEquals(utils.getDomain('http://!!!'), '!!!');
    assertNull(utils.getPath('http://!!!'));
    assertNull(utils.getScheme('www.x.com:80'));
    assertEquals('Query data with no fragment identifier', 'foo=bar&baz=bin',
        utils.getQueryData('http://google.com?foo=bar&baz=bin'));
  }
  
  function testMailtoUri() {
    var uri = 'mailto:joe+random@hominid.com';
    assertNull(utils.getDomain(uri));
    assertEquals('mailto', utils.getScheme(uri));
    assertEquals('joe+random@hominid.com', utils.getPath(uri));
  }
  
  function testSplitRelativeUri() {
    var uri = '/path%20path+path?q=query&hl=en#fragment';
    assertNull(utils.getScheme(uri));
    assertNull(utils.getDomain(uri));
    assertNull(utils.getDomainEncoded(uri));
    assertNull(utils.getPort(uri));
    assertEquals('/path%20path+path', utils.getPathEncoded(uri));
    assertEquals('/path path+path', utils.getPath(uri));
    assertEquals('q=query&hl=en', utils.getQueryData(uri));
    assertEquals('fragment', utils.getFragmentEncoded(uri));
    assertEquals('fragment', utils.getFragment(uri));
  }
  
  function testSplitBadAuthority() {
    // This URL has a syntax error per the RFC (port number must be digits, and
    // host cannot contain a colon except in [...]). This test is solely to
    // 'document' the current behavior, which may affect application handling
    // of erroneous URLs.
    assertEquals(utils.getDomain('http://host:port/'), 'host:port');
    assertNull(utils.getPort('http://host:port/'));
  }
  
  function testSplitIntoHostAndPath() {
    // Splitting into host and path takes care of one of the major use cases
    // of resolve, without implementing a generic algorithm that undoubtedly
    // requires a huge footprint.
    var uri = 'http://www.google.com:80/path%20path+path?q=query&hl=en#fragment';
    assertEquals('http://www.google.com:80',
        goog.uri.utils.getHost(uri));
    assertEquals('/path%20path+path?q=query&hl=en#fragment',
        goog.uri.utils.getPathAndAfter(uri));
  
    var uri2 = 'http://www.google.com/calendar';
    assertEquals('should handle missing fields', 'http://www.google.com',
        goog.uri.utils.getHost(uri2));
    assertEquals('should handle missing fields', '/calendar',
        goog.uri.utils.getPathAndAfter(uri2));
  }
  
  
  function testRelativeUrisHaveNoPath() {
    assertNull(utils.getPathEncoded('?hello'));
  }
  
  
  function testReservedCharacters() {
    var o = '%6F';
    var uri = 'http://www.g' + o + 'ogle.com%40/xxx%2feee/ccc';
    assertEquals('Should not decode reserved characters in path',
        '/xxx%2feee/ccc', goog.uri.utils.getPath(uri));
    assertEquals('Should not decode reserved characters in domain',
        'www.google.com%40', goog.uri.utils.getDomain(uri));
  }
  
  function testSetFragmentEncoded() {
    var expected = 'http://www.google.com/path#bar';
    assertEquals(expected,
        utils.setFragmentEncoded('http://www.google.com/path#foo', 'bar'));
  
    assertEquals(expected,
        utils.setFragmentEncoded('http://www.google.com/path', 'bar'));
  
    assertEquals('http://www.google.com/path',
        utils.setFragmentEncoded('http://www.google.com/path', ''));
  
    assertEquals('http://www.google.com/path',
        utils.setFragmentEncoded('http://www.google.com/path', null));
  }
  
  
  function testGetParamValue() {
    assertEquals('v1',
        utils.getParamValue('/path?key=v1&c=d&keywithsuffix=v3&key=v2', 'key'));
  
    assertEquals('v1',
        utils.getParamValue('/path?kEY=v1&c=d&keywithsuffix=v3&key=v2', 'kEY'));
  }
  
  
  function testGetParamValues() {
    assertArrayEquals('should ignore confusing suffixes', ['v1', 'v2'],
        utils.getParamValues(
            '/path?a=b&key=v1&c=d&key=v2&keywithsuffix=v3', 'key'));
    assertArrayEquals('should be case sensitive', ['v2'],
        utils.getParamValues('/path?a=b&keY=v1&c=d&KEy=v2&keywithsuffix=v3',
            'KEy'));
    assertArrayEquals('should work for the first parameter', ['v1', 'v2'],
        utils.getParamValues('/path?key=v1&c=d&key=v2&keywithsuffix=v3', 'key'));
    assertArrayEquals('should work for the last parameter', ['v1', 'v2'],
        utils.getParamValues('/path?key=v1&c=d&keywithsuffix=v3&key=v2', 'key'));
    assertArrayEquals(['1'],
        utils.getParamValues('http://foo.com?q=1#?q=2&q=3', 'q'));
  }
  
  
  function testGetParamValueAllowsEqualInValues() {
    assertEquals('equals signs can appear unencoded', 'v1=v2',
        utils.getParamValue('/path?key=v1=v2', 'key'));
    assertArrayEquals(['v1=v2=v3'],
        utils.getParamValues('/path?key=v1=v2=v3', 'key'));
  }
  
  
  function testGetParamValueNoSuchKey() {
    var uri = '/path?key=v1&c=d&keywithsuffix=v3&key=v2';
    assertNull(utils.getParamValue(uri, 'nosuchkey'));
    assertArrayEquals([], utils.getParamValues(uri, 'nosuchkey'));
    assertFalse(utils.hasParam(uri, 'nosuchkey'));
    assertNull(utils.getParamValue('q=1', 'q'));
    assertEquals('1', utils.getParamValue('?q=1', 'q'));
  }
  
  
  function testGetParamValueEmptyAndMissingValueStrings() {
    assertEquals('', utils.getParamValue('/path?key&bar', 'key'));
    assertEquals('', utils.getParamValue('/path?foo=bar&key', 'key'));
    assertEquals('', utils.getParamValue('/path?key', 'key'));
    assertEquals('', utils.getParamValue('/path?key=', 'key'));
    assertArrayEquals([''], utils.getParamValues('/path?key', 'key'));
    assertArrayEquals([''], utils.getParamValues('/path?key&bar', 'key'));
    assertArrayEquals([''], utils.getParamValues('/path?foo=bar&key', 'key'));
    assertArrayEquals([''], utils.getParamValues('/path?foo=bar&key=', 'key'));
    assertArrayEquals(['', '', '', 'j', ''],
        utils.getParamValues('/path?key&key&key=&key=j&key', 'key'));
    assertArrayEquals(['', '', '', '', ''],
        utils.getParamValues('/pathqqq?q&qq&q&q=&q&q', 'q'));
    assertTrue(utils.hasParam('/path?key=', 'key'));
  }
  
  
  function testGetParamValueDecoding() {
    assertEquals('plus should be supported as alias of space', 'foo bar baz',
        utils.getParamValue('/path?key=foo+bar%20baz', 'key'));
    assertArrayEquals(['foo bar baz'],
        utils.getParamValues('/path?key=foo%20bar%20baz', 'key'));
  }
  
  
  function testGetParamIgnoresParamsInFragmentIdentifiers() {
    assertFalse(utils.hasParam('/path?bah#a&key=foo', 'key'));
    assertEquals(null, utils.getParamValue('/path?bah#a&key=bar', 'key'));
    assertArrayEquals([], utils.getParamValues('/path?bah#a&key=bar', 'key'));
  }
  
  
  function testGetParamIgnoresExcludesFragmentFromParameterValue() {
    // Make sure the '#' doesn't get included anywhere, for parameter values
    // of different lengths.
    assertEquals('foo',
        utils.getParamValue('/path?key=foo#key=bar&key=baz', 'key'));
    assertArrayEquals(['foo'],
        utils.getParamValues('/path?key=foo#key=bar&key=baz', 'key'));
    assertEquals('',
        utils.getParamValue('/path?key#key=bar&key=baz', 'key'));
    assertArrayEquals([''],
        utils.getParamValues('/path?key#key=bar&key=baz', 'key'));
    assertEquals('x',
        utils.getParamValue('/path?key=x#key=bar&key=baz', 'key'));
    assertArrayEquals(['x'],
        utils.getParamValues('/path?key=x#key=bar&key=baz', 'key'));
  
    // Simply make sure hasParam doesn't die in this case.
    assertTrue(utils.hasParam('/path?key=foo#key=bar&key=baz', 'key'));
    assertTrue(utils.hasParam('/path?key=foo#key&key=baz', 'key'));
  }
  
  
  function testSameDomainPathsDiffer() {
    var uri1 = 'http://www.google.com/a';
    var uri2 = 'http://www.google.com/b';
    assertTrue(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertTrue(goog.uri.utils.haveSameDomain(uri2, uri1));
  }
  
  
  function testSameDomainSchemesDiffer() {
    var uri1 = 'http://www.google.com';
    var uri2 = 'https://www.google.com';
    assertFalse(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertFalse(goog.uri.utils.haveSameDomain(uri2, uri1));
  }
  
  
  function testSameDomainPortsDiffer() {
    var uri1 = 'http://www.google.com:1234/a';
    var uri2 = 'http://www.google.com/b';
    var uri3 = 'http://www.google.com:2345/b';
    assertFalse(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertFalse(goog.uri.utils.haveSameDomain(uri2, uri1));
    assertFalse(goog.uri.utils.haveSameDomain(uri1, uri3));
  }
  
  
  function testSameDomainDomainsDiffer() {
    var uri1 = '/a';
    var uri2 = 'http://www.google.com/b';
    assertFalse(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertFalse(goog.uri.utils.haveSameDomain(uri2, uri1));
  }
  
  
  function testSameDomainSubDomainDiffers() {
    var uri1 = 'http://www.google.com/a';
    var uri2 = 'http://mail.google.com/b';
    assertFalse(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertFalse(goog.uri.utils.haveSameDomain(uri2, uri1));
  }
  
  
  function testSameDomainNoDomain() {
    var uri1 = '/a';
    var uri2 = '/b';
    assertTrue(goog.uri.utils.haveSameDomain(uri1, uri2));
    assertTrue(goog.uri.utils.haveSameDomain(uri2, uri1));
  }
  
  
  
  /**
   * Simple class with a constant toString.
   * @param {string} stringValue The result of toString.
   * @constructor
   */
  function HasString(stringValue) {
    this.value_ = stringValue;
  }
  
  
  /** @override */
  HasString.prototype.toString = function() {
    return this.value_;
  };
  
  
  function testBuildFromEncodedParts() {
    assertEquals('should handle full URL',
        'http://foo@www.google.com:80/path?q=query#fragment',
        utils.buildFromEncodedParts('http', 'foo', 'www.google.com',
            80, '/path', 'q=query', 'fragment'));
    assertEquals('should handle unspecified parameters', '/search',
        utils.buildFromEncodedParts(null, null, undefined, null, '/search'));
    assertEquals('should handle params of non-primitive types',
        'http://foo@www.google.com:80/path?q=query#fragment',
        utils.buildFromEncodedParts(new HasString('http'), new HasString('foo'),
            new HasString('www.google.com'), new HasString('80'),
            new HasString('/path'), new HasString('q=query'),
            new HasString('fragment')));
  }
  
  
  function testAppendParam() {
    assertEquals('http://foo.com?q=1',
        utils.appendParam('http://foo.com', 'q', 1));
    assertEquals('http://foo.com?q=1#preserve',
        utils.appendParam('http://foo.com#preserve', 'q', 1));
    assertEquals('should tolerate a lone question mark',
        'http://foo.com?q=1',
        utils.appendParam('http://foo.com?', 'q', 1));
    assertEquals('http://foo.com?q=1&r=2',
        utils.appendParam('http://foo.com?q=1', 'r', 2));
    assertEquals('http://foo.com?q=1&r=2&s=3#preserve',
        utils.appendParam('http://foo.com?q=1&r=2#preserve', 's', 3));
    assertEquals('q=1&r=2&s=3&s=4',
        utils.buildQueryData(['q', 1, 'r', 2, 's', [3, 4]]));
    assertEquals('',
        utils.buildQueryData([]));
    assertEquals('?q=1#preserve',
        utils.appendParam('#preserve', 'q', 1));
  }
  
  function testAppendParams() {
    assertEquals('http://foo.com',
        utils.appendParams('http://foo.com'));
    assertEquals('http://foo.com?q=1&r=2&s=3&s=4#preserve',
        utils.appendParams('http://foo.com#preserve',
            'q', 1, 'r', 2, 's', [3, 4]));
    assertEquals('http://foo.com?a=1&q=1&r=2&s=3&s=4#preserve',
        utils.appendParams('http://foo.com?a=1#preserve',
            'q', 1, 'r', 2, 's', [3, 4]));
    assertEquals('http://foo.com?q=1&r=2&s=3&s=4#preserve',
        utils.appendParams('http://foo.com?#preserve',
            'q', 1, 'r', 2, 's', [3, 4]));
    assertEquals('?q=1&r=2&s=3&s=4#preserve',
        utils.appendParams('#preserve',
            'q', 1, 'r', 2, 's', [3, 4]));
    assertEquals('A question mark must not be appended if there are no ' +
        'parameters, otherwise repeated appends will be broken.',
        'http://foo.com#test', utils.appendParams('http://foo.com#test'));
    assertEquals('should handle objects with to-string',
        'http://foo.com?q=a&r=b',
        utils.appendParams('http://foo.com',
            'q', new HasString('a'), 'r', [new HasString('b')]));
  
    assertThrows('appendParams should fail with an odd number of arguments.',
        function() {
          utils.appendParams('http://foo.com', 'a', 1, 'b');
        });
  }
  
  
  function testValuelessParam() {
    assertEquals('http://foo.com?q',
        utils.appendParam('http://foo.com', 'q'));
    assertEquals('http://foo.com?q',
        utils.appendParam('http://foo.com', 'q', null /* opt_value */));
    assertEquals('http://foo.com?q#preserve',
        utils.appendParam('http://foo.com#preserve', 'q'));
    assertEquals('should tolerate a lone question mark',
        'http://foo.com?q',
        utils.appendParam('http://foo.com?', 'q'));
    assertEquals('http://foo.com?q=1&r',
        utils.appendParam('http://foo.com?q=1', 'r'));
    assertEquals('http://foo.com?q=1&r=2&s#preserve',
        utils.appendParam('http://foo.com?q=1&r=2#preserve', 's'));
    assertTrue(utils.hasParam('http://foo.com?q=1&r=2&s#preserve', 's'));
  }
  
  
  function testAppendParamsAsArray() {
    assertEquals('http://foo.com?q=1&r=2&s=3&s=4#preserve',
        utils.appendParams('http://foo.com#preserve',
            ['q', 1, 'r', 2, 's', [3, 4]]));
    assertEquals('http://foo.com?q=1&s=3&s=4#preserve',
        utils.appendParams('http://foo.com#preserve',
            ['q', 1, 'r', null, 's', [3, 4]]));
    assertEquals('http://foo.com?q=1&s=3&s=4#preserve',
        utils.appendParams('http://foo.com#preserve',
            ['q', 1, 'r', undefined, 's', [3, 4]]));
    assertEquals('http://foo.com?q=1&r=2&s=3&s=4&s=null&s=undefined#preserve',
        utils.appendParams('http://foo.com#preserve',
            ['q', 1, 'r', 2, 's', [3, new HasString('4'), null, undefined]]));
  }
  
  
  function testAppendParamEscapes() {
    assertEquals('http://foo.com?h=a%20b',
        utils.appendParams('http://foo.com', 'h', 'a b'));
    assertEquals('h=a%20b', utils.buildQueryData(['h', 'a b']));
    assertEquals('h=a%20b', utils.buildQueryDataFromMap({'h': 'a b'}));
  }
  
  
  function testAppendParamsFromMap() {
    var uri = utils.appendParamsFromMap('http://www.foo.com',
        {'a': 1, 'b': 'bob', 'c': [1, 2, new HasString('3')]});
    assertArrayEquals(['1'], utils.getParamValues(uri, 'a'));
    assertArrayEquals(['bob'], utils.getParamValues(uri, 'b'));
    assertArrayEquals(['1', '2', '3'], utils.getParamValues(uri, 'c'));
  }
  
  function testBuildQueryDataFromMap() {
    assertEquals('a=1', utils.buildQueryDataFromMap({'a': 1}));
    var uri = 'foo.com?' + utils.buildQueryDataFromMap(
        {'a': 1, 'b': 'bob', 'c': [1, 2, new HasString('3')]});
    assertArrayEquals(['1'], utils.getParamValues(uri, 'a'));
    assertArrayEquals(['bob'], utils.getParamValues(uri, 'b'));
    assertArrayEquals(['1', '2', '3'], utils.getParamValues(uri, 'c'));
  }
  
  
  function testMultiParamSkipsNullParams() {
    // For the multi-param functions, null and undefined keys should be
    // skipped, but null within a parameter array should still be appended.
    assertEquals('buildQueryDataFromMap', 'a=null',
        utils.buildQueryDataFromMap({'a': [null], 'b': null, 'c': undefined}));
    assertEquals('buildQueryData', 'a=null',
        utils.buildQueryData(['a', [null], 'b', null, 'c', undefined]));
    assertEquals('appendParams', 'foo.com?a=null',
        utils.appendParams('foo.com', 'a', [null], 'b', null, 'c', undefined));
    assertEquals('empty strings should NOT be skipped', 'foo.com?a&b',
        utils.appendParams('foo.com', 'a', [''], 'b', ''));
  }
  
  
  function testRemoveParam() {
    assertEquals('remove middle', 'http://foo.com?q=1&s=3',
        utils.removeParam('http://foo.com?q=1&r=2&s=3', 'r'));
    assertEquals('remove first', 'http://foo.com?r=2&s=3',
        utils.removeParam('http://foo.com?q=1&r=2&s=3', 'q'));
    assertEquals('remove last', 'http://foo.com?q=1&r=2',
        utils.removeParam('http://foo.com?q=1&r=2&s=3', 's'));
    assertEquals('remove only param', 'http://foo.com',
        utils.removeParam('http://foo.com?q=1', 'q'));
  }
  
  
  function testRemoveParamWithFragment() {
    assertEquals('remove middle', 'http://foo.com?q=1&s=3#?r=1&r=1',
        utils.removeParam('http://foo.com?q=1&r=2&s=3#?r=1&r=1', 'r'));
    assertEquals('remove first', 'http://foo.com?r=2&s=3#?q=1&q=1',
        utils.removeParam('http://foo.com?q=1&r=2&s=3#?q=1&q=1', 'q'));
    assertEquals('remove only param', 'http://foo.com#?q=1&q=1',
        utils.removeParam('http://foo.com?q=1#?q=1&q=1', 'q'));
    assertEquals('remove last', 'http://foo.com?q=1&r=2#?s=1&s=1',
        utils.removeParam('http://foo.com?q=1&r=2&s=3#?s=1&s=1', 's'));
  }
  
  
  function testRemoveNonExistent() {
    assertEquals('remove key not present', 'http://foo.com?q=1',
        utils.removeParam('http://foo.com?q=1', 'nosuchkey'));
    assertEquals('remove key not present', 'http://foo.com#q=1',
        utils.removeParam('http://foo.com#q=1', 'q'));
    assertEquals('remove key from empty string', '',
        utils.removeParam('', 'nosuchkey'));
  }
  
  
  function testRemoveMultiple() {
    assertEquals('remove four of the same', 'http://foo.com',
        utils.removeParam('http://foo.com?q=1&q=2&q=3&q=4', 'q'));
    assertEquals('remove four of the same with another one in the middle',
        'http://foo.com?a=99',
        utils.removeParam('http://foo.com?q=1&q=2&a=99&q=3&q=4', 'q'));
  }
  
  
  function testSetParam() {
    assertEquals('middle, no fragment', 'http://foo.com?q=1&s=3&r=999',
        utils.setParam('http://foo.com?q=1&r=2&s=3', 'r', 999));
    assertEquals('middle', 'http://foo.com?q=1&s=3&r=999#?r=1&r=1',
        utils.setParam('http://foo.com?q=1&r=2&s=3#?r=1&r=1', 'r', 999));
    assertEquals('first', 'http://foo.com?r=2&s=3&q=999#?q=1&q=1',
        utils.setParam('http://foo.com?q=1&r=2&s=3#?q=1&q=1', 'q', 999));
    assertEquals('only param', 'http://foo.com?q=999#?q=1&q=1',
        utils.setParam('http://foo.com?q=1#?q=1&q=1', 'q', 999));
    assertEquals('last', 'http://foo.com?q=1&r=2&s=999#?s=1&s=1',
        utils.setParam('http://foo.com?q=1&r=2&s=3#?s=1&s=1', 's', 999));
    assertEquals('multiple', 'http://foo.com?s=999#?s=1&s=1',
        utils.setParam('http://foo.com?s=1&s=2&s=3#?s=1&s=1', 's', 999));
    assertEquals('none', 'http://foo.com?r=1&s=999#?s=1&s=1',
        utils.setParam('http://foo.com?r=1#?s=1&s=1', 's', 999));
  }
  
  
  function testModifyQueryParams() {
    var uri = 'http://foo.com?a=A&a=A2&b=B&b=B2&c=C';
  
    uri = utils.appendParam(uri, 'd', 'D');
    assertEquals('http://foo.com?a=A&a=A2&b=B&b=B2&c=C&d=D', uri);
  
    uri = utils.removeParam(uri, 'd');
    uri = utils.appendParam(uri, 'd', 'D2');
    assertEquals('http://foo.com?a=A&a=A2&b=B&b=B2&c=C&d=D2', uri);
  
    uri = utils.removeParam(uri, 'a');
    uri = utils.appendParam(uri, 'a', 'A3');
    assertEquals('http://foo.com?b=B&b=B2&c=C&d=D2&a=A3', uri);
  
    uri = utils.removeParam(uri, 'a');
    uri = utils.appendParam(uri, 'a', 'A4');
    assertEquals('A4', utils.getParamValue(uri, 'a'));
  }
  
  
  function testBrowserEncoding() {
    // Sanity check borrowed from old code to ensure that encodeURIComponent
    // is good enough.  Entire test should be safe to delete.
    var allowedInFragment = /[A-Za-z0-9\-\._~!$&'()*+,;=:@/?]/g;
  
    var sb = [];
    for (var i = 33; i < 500; i++) {  // arbitrarily use first 500 chars.
      sb.push(String.fromCharCode(i));
    }
    var testString = sb.join('');
  
    var encodedStr = encodeURIComponent(testString);
  
    // Strip all percent encoded characters, as they're ok.
    encodedStr = encodedStr.replace(/%[0-9A-F][0-9A-F]/g, '');
  
    // Remove allowed characters.
    encodedStr = encodedStr.replace(allowedInFragment, '');
  
    // Only illegal characters should remain, which is a fail.
    assertEquals('String should be empty', 0, encodedStr.length);
  }
  
  
  function testAppendPath() {
    var uri = 'http://www.foo.com';
    var expected = uri + '/dummy';
    assertEquals('Path has no trailing "/", adding with leading "/" failed',
        expected,
        goog.uri.utils.appendPath(uri, '/dummy'));
    assertEquals('Path has no trailing "/", adding with no leading "/" failed',
        expected,
        goog.uri.utils.appendPath(uri, 'dummy'));
    uri = uri + '/';
    assertEquals('Path has trailing "/", adding with leading "/" failed',
        expected,
        goog.uri.utils.appendPath(uri, '/dummy'));
  
    assertEquals('Path has trailing "/", adding with no leading "/" failed',
        expected,
        goog.uri.utils.appendPath(uri, 'dummy'));
  }
  
  
  function testMakeUnique() {
    assertEquals('http://www.google.com?zx=RANDOM#blob',
        goog.uri.utils.makeUnique('http://www.google.com#blob'));
    assertEquals('http://www.google.com?a=1&b=2&zx=RANDOM#blob',
        goog.uri.utils.makeUnique('http://www.google.com?zx=9&a=1&b=2#blob'));
  }
  
  
  function testParseQuery() {
    var result = [];
    goog.uri.utils.parseQueryData(
        'foo=bar&no&empty=&tricky%3D%26=%3D%26&=nothing&=&',
        function(name, value) { result.push(name, value); });
    assertArrayEquals(
        ['foo', 'bar',
         'no', '',
         'empty', '',
         'tricky%3D%26', '=&',
         '', 'nothing',
         '', '',
         '', ''],
        result);
  
    // Go thought buildQueryData and parseQueryData and see if we get the same
    // result.
    var result2 = [];
    goog.uri.utils.parseQueryData(
        goog.uri.utils.buildQueryData(result),
        function(name, value) { result2.push(name, value); });
    assertArrayEquals(result, result2);
  }
  
  
  