5 * Copyright (c) 2002-2011, Sebastian Bergmann <sebastian@phpunit.de>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * * Neither the name of Sebastian Bergmann nor the names of his
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
38 * @subpackage Framework
39 * @author Bernhard Schussek <bschussek@2bepublished.at>
40 * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
41 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
42 * @link http://www.phpunit.de/
43 * @since File available since Release 3.6.0
47 * Factory for comparators which compare values for equality.
50 * @subpackage Framework
51 * @author Bernhard Schussek <bschussek@2bepublished.at>
52 * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
53 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
54 * @version Release: 3.6.3
55 * @link http://www.phpunit.de/
56 * @since Class available since Release 3.6.0
58 class PHPUnit_Framework_ComparatorFactory
63 protected $comparators = array();
66 * @var PHPUnit_Framework_ComparatorFactory
68 private static $defaultInstance = NULL;
71 * Constructs a new factory.
73 public function __construct()
75 $this->register(new PHPUnit_Framework_Comparator_Type);
76 $this->register(new PHPUnit_Framework_Comparator_Scalar);
77 $this->register(new PHPUnit_Framework_Comparator_Numeric);
78 $this->register(new PHPUnit_Framework_Comparator_Double);
79 $this->register(new PHPUnit_Framework_Comparator_Array);
80 $this->register(new PHPUnit_Framework_Comparator_Resource);
81 $this->register(new PHPUnit_Framework_Comparator_Object);
82 $this->register(new PHPUnit_Framework_Comparator_Exception);
83 $this->register(new PHPUnit_Framework_Comparator_SplObjectStorage);
84 $this->register(new PHPUnit_Framework_Comparator_DOMDocument);
85 $this->register(new PHPUnit_Framework_Comparator_MockObject);
89 * Returns the default instance.
91 * @return PHPUnit_Framework_ComparatorFactory
93 public static function getDefaultInstance()
95 if (self::$defaultInstance === NULL) {
96 self::$defaultInstance = new PHPUnit_Framework_ComparatorFactory;
99 return self::$defaultInstance;
103 * Returns the correct comparator for comparing two values.
105 * @param mixed $expected The first value to compare
106 * @param mixed $actual The second value to compare
107 * @return PHPUnit_Framework_Comparator
109 public function getComparatorFor($expected, $actual)
111 foreach ($this->comparators as $comparator) {
112 if ($comparator->accepts($expected, $actual)) {
117 throw new InvalidArgumentException(
119 'No comparator is registered for comparing the types "%s" and "%s"',
120 gettype($expected), gettype($actual)
126 * Registers a new comparator.
128 * This comparator will be returned by getInstance() if its accept() method
129 * returns TRUE for the compared values. It has higher priority than the
130 * existing comparators, meaning that its accept() method will be tested
131 * before those of the other comparators.
133 * @param PHPUnit_Framework_Comparator $comparator The registered comparator
135 public function register(PHPUnit_Framework_Comparator $comparator)
137 array_unshift($this->comparators, $comparator);
138 $comparator->setFactory($this);
142 * Unregisters a comparator.
144 * This comparator will no longer be returned by getInstance().
146 * @param PHPUnit_Framework_Comparator $comparator The unregistered comparator
148 public function unregister(PHPUnit_Framework_Comparator $comparator)
150 foreach ($this->comparators as $key => $_comparator) {
151 if ($comparator === $_comparator) {
152 unset($this->comparators[$key]);