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<?php
/*
* This file is part of the Prophecy.
* (c) Konstantin Kudryashov <ever.zet@gmail.com>
* Marcello Duarte <marcello.duarte@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Prophecy\Prophecy;
use Prophecy\Argument;
use Prophecy\Prophet;
use Prophecy\Promise;
use Prophecy\Prediction;
use Prophecy\Exception\Doubler\MethodNotFoundException;
use Prophecy\Exception\InvalidArgumentException;
use Prophecy\Exception\Prophecy\MethodProphecyException;
/**
* Method prophecy.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class MethodProphecy
{
private $objectProphecy;
private $methodName;
private $argumentsWildcard;
private $promise;
private $prediction;
private $checkedPredictions = array();
private $bound = false;
private $voidReturnType = false;
/**
* Initializes method prophecy.
*
* @param ObjectProphecy $objectProphecy
* @param string $methodName
* @param null|Argument\ArgumentsWildcard|array $arguments
*
* @throws \Prophecy\Exception\Doubler\MethodNotFoundException If method not found
*/
public function __construct(ObjectProphecy $objectProphecy, $methodName, $arguments = null)
{
$double = $objectProphecy->reveal();
if (!method_exists($double, $methodName)) {
throw new MethodNotFoundException(sprintf(
'Method `%s::%s()` is not defined.', get_class($double), $methodName
), get_class($double), $methodName, $arguments);
}
$this->objectProphecy = $objectProphecy;
$this->methodName = $methodName;
$reflectedMethod = new \ReflectionMethod($double, $methodName);
if ($reflectedMethod->isFinal()) {
throw new MethodProphecyException(sprintf(
"Can not add prophecy for a method `%s::%s()`\n".
"as it is a final method.",
get_class($double),
$methodName
), $this);
}
if (null !== $arguments) {
$this->withArguments($arguments);
}
if (version_compare(PHP_VERSION, '7.0', '>=') && true === $reflectedMethod->hasReturnType()) {
$type = (string) $reflectedMethod->getReturnType();
if ('void' === $type) {
$this->voidReturnType = true;
}
$this->will(function () use ($type) {
switch ($type) {
case 'void': return;
case 'string': return '';
case 'float': return 0.0;
case 'int': return 0;
case 'bool': return false;
case 'array': return array();
case 'callable':
case 'Closure':
return function () {};
case 'Traversable':
case 'Generator':
// Remove eval() when minimum version >=5.5
/** @var callable $generator */
$generator = eval('return function () { yield; };');
return $generator();
default:
$prophet = new Prophet;
return $prophet->prophesize($type)->reveal();
}
});
}
}
/**
* Sets argument wildcard.
*
* @param array|Argument\ArgumentsWildcard $arguments
*
* @return $this
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function withArguments($arguments)
{
if (is_array($arguments)) {
$arguments = new Argument\ArgumentsWildcard($arguments);
}
if (!$arguments instanceof Argument\ArgumentsWildcard) {
throw new InvalidArgumentException(sprintf(
"Either an array or an instance of ArgumentsWildcard expected as\n".
'a `MethodProphecy::withArguments()` argument, but got %s.',
gettype($arguments)
));
}
$this->argumentsWildcard = $arguments;
return $this;
}
/**
* Sets custom promise to the prophecy.
*
* @param callable|Promise\PromiseInterface $promise
*
* @return $this
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function will($promise)
{
if (is_callable($promise)) {
$promise = new Promise\CallbackPromise($promise);
}
if (!$promise instanceof Promise\PromiseInterface) {
throw new InvalidArgumentException(sprintf(
'Expected callable or instance of PromiseInterface, but got %s.',
gettype($promise)
));
}
$this->bindToObjectProphecy();
$this->promise = $promise;
return $this;
}
/**
* Sets return promise to the prophecy.
*
* @see \Prophecy\Promise\ReturnPromise
*
* @return $this
*/
public function willReturn()
{
if ($this->voidReturnType) {
throw new MethodProphecyException(
"The method \"$this->methodName\" has a void return type, and so cannot return anything",
$this
);
}
return $this->will(new Promise\ReturnPromise(func_get_args()));
}
/**
* Sets return argument promise to the prophecy.
*
* @param int $index The zero-indexed number of the argument to return
*
* @see \Prophecy\Promise\ReturnArgumentPromise
*
* @return $this
*/
public function willReturnArgument($index = 0)
{
if ($this->voidReturnType) {
throw new MethodProphecyException("The method \"$this->methodName\" has a void return type", $this);
}
return $this->will(new Promise\ReturnArgumentPromise($index));
}
/**
* Sets throw promise to the prophecy.
*
* @see \Prophecy\Promise\ThrowPromise
*
* @param string|\Exception $exception Exception class or instance
*
* @return $this
*/
public function willThrow($exception)
{
return $this->will(new Promise\ThrowPromise($exception));
}
/**
* Sets custom prediction to the prophecy.
*
* @param callable|Prediction\PredictionInterface $prediction
*
* @return $this
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function should($prediction)
{
if (is_callable($prediction)) {
$prediction = new Prediction\CallbackPrediction($prediction);
}
if (!$prediction instanceof Prediction\PredictionInterface) {
throw new InvalidArgumentException(sprintf(
'Expected callable or instance of PredictionInterface, but got %s.',
gettype($prediction)
));
}
$this->bindToObjectProphecy();
$this->prediction = $prediction;
return $this;
}
/**
* Sets call prediction to the prophecy.
*
* @see \Prophecy\Prediction\CallPrediction
*
* @return $this
*/
public function shouldBeCalled()
{
return $this->should(new Prediction\CallPrediction);
}
/**
* Sets no calls prediction to the prophecy.
*
* @see \Prophecy\Prediction\NoCallsPrediction
*
* @return $this
*/
public function shouldNotBeCalled()
{
return $this->should(new Prediction\NoCallsPrediction);
}
/**
* Sets call times prediction to the prophecy.
*
* @see \Prophecy\Prediction\CallTimesPrediction
*
* @param $count
*
* @return $this
*/
public function shouldBeCalledTimes($count)
{
return $this->should(new Prediction\CallTimesPrediction($count));
}
/**
* Sets call times prediction to the prophecy.
*
* @see \Prophecy\Prediction\CallTimesPrediction
*
* @return $this
*/
public function shouldBeCalledOnce()
{
return $this->shouldBeCalledTimes(1);
}
/**
* Checks provided prediction immediately.
*
* @param callable|Prediction\PredictionInterface $prediction
*
* @return $this
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function shouldHave($prediction)
{
if (is_callable($prediction)) {
$prediction = new Prediction\CallbackPrediction($prediction);
}
if (!$prediction instanceof Prediction\PredictionInterface) {
throw new InvalidArgumentException(sprintf(
'Expected callable or instance of PredictionInterface, but got %s.',
gettype($prediction)
));
}
if (null === $this->promise && !$this->voidReturnType) {
$this->willReturn();
}
$calls = $this->getObjectProphecy()->findProphecyMethodCalls(
$this->getMethodName(),
$this->getArgumentsWildcard()
);
try {
$prediction->check($calls, $this->getObjectProphecy(), $this);
$this->checkedPredictions[] = $prediction;
} catch (\Exception $e) {
$this->checkedPredictions[] = $prediction;
throw $e;
}
return $this;
}
/**
* Checks call prediction.
*
* @see \Prophecy\Prediction\CallPrediction
*
* @return $this
*/
public function shouldHaveBeenCalled()
{
return $this->shouldHave(new Prediction\CallPrediction);
}
/**
* Checks no calls prediction.
*
* @see \Prophecy\Prediction\NoCallsPrediction
*
* @return $this
*/
public function shouldNotHaveBeenCalled()
{
return $this->shouldHave(new Prediction\NoCallsPrediction);
}
/**
* Checks no calls prediction.
*
* @see \Prophecy\Prediction\NoCallsPrediction
* @deprecated
*
* @return $this
*/
public function shouldNotBeenCalled()
{
return $this->shouldNotHaveBeenCalled();
}
/**
* Checks call times prediction.
*
* @see \Prophecy\Prediction\CallTimesPrediction
*
* @param int $count
*
* @return $this
*/
public function shouldHaveBeenCalledTimes($count)
{
return $this->shouldHave(new Prediction\CallTimesPrediction($count));
}
/**
* Checks call times prediction.
*
* @see \Prophecy\Prediction\CallTimesPrediction
*
* @return $this
*/
public function shouldHaveBeenCalledOnce()
{
return $this->shouldHaveBeenCalledTimes(1);
}
/**
* Checks currently registered [with should(...)] prediction.
*/
public function checkPrediction()
{
if (null === $this->prediction) {
return;
}
$this->shouldHave($this->prediction);
}
/**
* Returns currently registered promise.
*
* @return null|Promise\PromiseInterface
*/
public function getPromise()
{
return $this->promise;
}
/**
* Returns currently registered prediction.
*
* @return null|Prediction\PredictionInterface
*/
public function getPrediction()
{
return $this->prediction;
}
/**
* Returns predictions that were checked on this object.
*
* @return Prediction\PredictionInterface[]
*/
public function getCheckedPredictions()
{
return $this->checkedPredictions;
}
/**
* Returns object prophecy this method prophecy is tied to.
*
* @return ObjectProphecy
*/
public function getObjectProphecy()
{
return $this->objectProphecy;
}
/**
* Returns method name.
*
* @return string
*/
public function getMethodName()
{
return $this->methodName;
}
/**
* Returns arguments wildcard.
*
* @return Argument\ArgumentsWildcard
*/
public function getArgumentsWildcard()
{
return $this->argumentsWildcard;
}
/**
* @return bool
*/
public function hasReturnVoid()
{
return $this->voidReturnType;
}
private function bindToObjectProphecy()
{
if ($this->bound) {
return;
}
$this->getObjectProphecy()->addMethodProphecy($this);
$this->bound = true;
}
}