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<?php |
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namespace Peridot\Leo\Matcher; |
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use Countable; |
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use InvalidArgumentException; |
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use Peridot\Leo\Matcher\Template\ArrayTemplate; |
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use Peridot\Leo\Matcher\Template\TemplateInterface; |
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/** |
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* LengthMatcher determines if an actual array, string, or Countable has a length equivalent |
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* to the expected value. |
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* |
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* @package Peridot\Leo\Matcher |
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*/ |
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class LengthMatcher extends AbstractMatcher |
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{ |
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/** |
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* @var int |
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*/ |
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protected $count; |
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/** |
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* {@inheritdoc} |
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* |
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* @return TemplateInterface |
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*/ |
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public function getDefaultTemplate() |
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{ |
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$template = new ArrayTemplate([ |
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'default' => 'Expected {{actual}} to have a length of {{expected}} but got {{count}}', |
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'negated' => 'Expected {{actual}} to not have a length of {{expected}}', |
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]); |
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return $template->setTemplateVars(['count' => $this->count]); |
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} |
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/** |
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* Match the length of the countable interface or string against |
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* the expected value. |
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* |
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* @param string|array|Countable $actual |
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* @return mixed |
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*/ |
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protected function doMatch($actual) |
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{ |
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if ($this->isCountable($actual)) { |
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$this->count = count($actual); |
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} |
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if (is_string($actual)) { |
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$this->count = strlen($actual); |
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} |
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if (isset($this->count)) { |
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return $this->expected === $this->count; |
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} |
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throw new InvalidArgumentException('Length matcher requires a string, array, or Countable'); |
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} |
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/** |
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* Determine if the native count() function can return a valid result |
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* on the actual value. |
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* |
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* @param mixed $actual |
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* @return bool |
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*/ |
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protected function isCountable($actual) |
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{ |
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return is_array($actual) || $actual instanceof Countable; |
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} |
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} |
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peridot-php /
leo
