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<?php
/*
* This file is part of PHPUnit.
*
* (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.
*/
/**
* Constraint that checks if one value is equal to another.
*
* Equality is checked with PHP's == operator, the operator is explained in
* detail at {@url http://www.php.net/manual/en/types.comparisons.php}.
* Two values are equal if they have the same value disregarding type.
*
* The expected value is passed in the constructor.
*
* @since Class available since Release 3.0.0
*/
class PHPUnit_Framework_Constraint_IsEqual extends PHPUnit_Framework_Constraint
{
/**
* @var mixed
*/
protected $value;
/**
* @var float
*/
protected $delta = 0.0;
/**
* @var int
*/
protected $maxDepth = 10;
/**
* @var bool
*/
protected $canonicalize = false;
/**
* @var bool
*/
protected $ignoreCase = false;
/**
* @var SebastianBergmann\Comparator\ComparisonFailure
*/
protected $lastFailure;
/**
* @param mixed $value
* @param float $delta
* @param int $maxDepth
* @param bool $canonicalize
* @param bool $ignoreCase
*
* @throws PHPUnit_Framework_Exception
*/
public function __construct($value, $delta = 0.0, $maxDepth = 10, $canonicalize = false, $ignoreCase = false)
{
parent::__construct();
if (!is_numeric($delta)) {
throw PHPUnit_Util_InvalidArgumentHelper::factory(2, 'numeric');
}
if (!is_int($maxDepth)) {
throw PHPUnit_Util_InvalidArgumentHelper::factory(3, 'integer');
}
if (!is_bool($canonicalize)) {
throw PHPUnit_Util_InvalidArgumentHelper::factory(4, 'boolean');
}
if (!is_bool($ignoreCase)) {
throw PHPUnit_Util_InvalidArgumentHelper::factory(5, 'boolean');
}
$this->value = $value;
$this->delta = $delta;
$this->maxDepth = $maxDepth;
$this->canonicalize = $canonicalize;
$this->ignoreCase = $ignoreCase;
}
/**
* Evaluates the constraint for parameter $other
*
* If $returnResult is set to false (the default), an exception is thrown
* in case of a failure. null is returned otherwise.
*
* If $returnResult is true, the result of the evaluation is returned as
* a boolean value instead: true in case of success, false in case of a
* failure.
*
* @param mixed $other Value or object to evaluate.
* @param string $description Additional information about the test
* @param bool $returnResult Whether to return a result or throw an exception
*
* @return mixed
*
* @throws PHPUnit_Framework_ExpectationFailedException
*/
public function evaluate($other, $description = '', $returnResult = false)
{
// If $this->value and $other are identical, they are also equal.
// This is the most common path and will allow us to skip
// initialization of all the comparators.
if ($this->value === $other) {
return true;
}
$comparatorFactory = SebastianBergmann\Comparator\Factory::getInstance();
try {
$comparator = $comparatorFactory->getComparatorFor(
$this->value,
$other
);
$comparator->assertEquals(
$this->value,
$other,
$this->delta,
$this->canonicalize,
$this->ignoreCase
);
} catch (SebastianBergmann\Comparator\ComparisonFailure $f) {
if ($returnResult) {
return false;
}
throw new PHPUnit_Framework_ExpectationFailedException(
trim($description . "\n" . $f->getMessage()),
$f
);
}
return true;
}
/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
$delta = '';
if (is_string($this->value)) {
if (strpos($this->value, "\n") !== false) {
return 'is equal to <text>';
} else {
return sprintf(
'is equal to <string:%s>',
$this->value
);
}
} else {
if ($this->delta != 0) {
$delta = sprintf(
' with delta <%F>',
$this->delta
);
}
return sprintf(
'is equal to %s%s',
$this->exporter->export($this->value),
$delta
);
}
}
}