116 lines
3.6 KiB
PHP
116 lines
3.6 KiB
PHP
<?php
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/**
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* Utility class for making PHP reflection easier to use.
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*/
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class ReflectionHelper
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{
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private static $privateVarsToReset = array();
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/**
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* Resets any static vars that were set to their
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* original values (to not screw up later unit test runs).
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*
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* @return void
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*/
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public static function reset()
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{
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foreach (self::$privateVarsToReset as $class => $valueNames) {
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foreach ($valueNames as $valueName => $originalValue) {
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self::setStaticValue($class, $valueName, $originalValue, $saveOriginalValue = false);
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}
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}
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self::$privateVarsToReset = array();
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}
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/**
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* Get the value of a static private or public class property.
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* Used to test internals of class without having to make the property public
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*
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* @param string $class
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* @param string $valueName
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* @return mixed|null
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*/
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public static function getStaticValue($class, $valueName)
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{
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$reflectionClass = new ReflectionClass($class);
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$reflectionProperty = $reflectionClass->getProperty($valueName);
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$reflectionProperty->setAccessible(true);
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$value = $reflectionProperty->getValue();
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// clean up
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$reflectionProperty->setAccessible(false);
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return $value;
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}
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/**
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* Set the value of a static private or public class property.
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* Used to test internals of class without having to make the property public
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*
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* @param string $class
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* @param string $valueName
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* @param mixed|null $value
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* @param bool $saveOriginalValue
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* @return void
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*/
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public static function setStaticValue($class, $valueName, $value, $saveOriginalValue = true)
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{
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$reflectionClass = new ReflectionClass($class);
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$reflectionProperty = $reflectionClass->getProperty($valueName);
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$reflectionProperty->setAccessible(true);
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// to prevent side-effects in later tests, we need to remember the original value and reset it on tear down
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// @NOTE: we need to check isset in case the original value was null or array()
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if ($saveOriginalValue && (!isset(self::$privateVarsToReset[$class]) || !isset(self::$privateVarsToReset[$class][$name]))) {
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self::$privateVarsToReset[$class][$valueName] = $reflectionProperty->getValue();
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}
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$reflectionProperty->setValue($value);
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// clean up
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$reflectionProperty->setAccessible(false);
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}
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/**
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* @param object $object
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* @param string $valueName
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*
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* @return mixed|null
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*/
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public static function getValueOnObject($object, $valueName)
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{
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$reflectionObject = new ReflectionObject($object);
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$reflectionProperty = $reflectionObject->getProperty($valueName);
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$reflectionProperty->setAccessible(true);
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$value = $reflectionProperty->getValue($object);
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// clean up
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$reflectionProperty->setAccessible(false);
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return $value;
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}
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/**
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* Invoke a the given public or protected method on the given object.
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*
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* @param object $object
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* @param string $methodName
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* @param *mixed|null $params
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*
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* @return mixed|null
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*/
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public static function callMethodOnObject($object, $methodName)
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{
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$params = func_get_args();
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array_shift($params); // object
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array_shift($params); // methodName
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$className = get_class($object);
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$class = new ReflectionClass($className);
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$method = $class->getMethod($methodName);
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$method->setAccessible(true);
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return $method->invokeArgs($object, $params);
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}
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}
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