ObjectComparator.php
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<?php
/*
* This file is part of the Comparator package.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Comparator;
/**
* Compares objects for equality.
*/
class ObjectComparator extends ArrayComparator
{
/**
* Returns whether the comparator can compare two values.
*
* @param mixed $expected The first value to compare
* @param mixed $actual The second value to compare
* @return bool
*/
public function accepts($expected, $actual)
{
return is_object($expected) && is_object($actual);
}
/**
* Asserts that two values are equal.
*
* @param mixed $expected The first value to compare
* @param mixed $actual The second value to compare
* @param float $delta The allowed numerical distance between two values to
* consider them equal
* @param bool $canonicalize If set to TRUE, arrays are sorted before
* comparison
* @param bool $ignoreCase If set to TRUE, upper- and lowercasing is
* ignored when comparing string values
* @param array $processed
* @throws ComparisonFailure Thrown when the comparison
* fails. Contains information about the
* specific errors that lead to the failure.
*/
public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false, array &$processed = array())
{
if (get_class($actual) !== get_class($expected)) {
throw new ComparisonFailure(
$expected,
$actual,
$this->exporter->export($expected),
$this->exporter->export($actual),
false,
sprintf(
'%s is not instance of expected class "%s".',
$this->exporter->export($actual),
get_class($expected)
)
);
}
// don't compare twice to allow for cyclic dependencies
if (in_array(array($actual, $expected), $processed, true) ||
in_array(array($expected, $actual), $processed, true)) {
return;
}
$processed[] = array($actual, $expected);
// don't compare objects if they are identical
// this helps to avoid the error "maximum function nesting level reached"
// CAUTION: this conditional clause is not tested
if ($actual !== $expected) {
try {
parent::assertEquals(
$this->toArray($expected),
$this->toArray($actual),
$delta,
$canonicalize,
$ignoreCase,
$processed
);
} catch (ComparisonFailure $e) {
throw new ComparisonFailure(
$expected,
$actual,
// replace "Array" with "MyClass object"
substr_replace($e->getExpectedAsString(), get_class($expected) . ' Object', 0, 5),
substr_replace($e->getActualAsString(), get_class($actual) . ' Object', 0, 5),
false,
'Failed asserting that two objects are equal.'
);
}
}
}
/**
* Converts an object to an array containing all of its private, protected
* and public properties.
*
* @param object $object
* @return array
*/
protected function toArray($object)
{
return $this->exporter->toArray($object);
}
}