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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\Call;
use Prophecy\Exception\Prophecy\MethodProphecyException;
use Prophecy\Prophecy\ObjectProphecy;
use Prophecy\Argument\ArgumentsWildcard;
use Prophecy\Util\StringUtil;
use Prophecy\Exception\Call\UnexpectedCallException;
use SplObjectStorage;
/**
* Calls receiver & manager.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class CallCenter
{
private $util;
/**
* @var Call[]
*/
private $recordedCalls = array();
/**
* @var SplObjectStorage
*/
private $unexpectedCalls;
/**
* Initializes call center.
*
* @param StringUtil $util
*/
public function __construct(StringUtil $util = null)
{
$this->util = $util ?: new StringUtil;
$this->unexpectedCalls = new SplObjectStorage();
}
/**
* Makes and records specific method call for object prophecy.
*
* @param ObjectProphecy $prophecy
* @param string $methodName
* @param array $arguments
*
* @return mixed Returns null if no promise for prophecy found or promise return value.
*
* @throws \Prophecy\Exception\Call\UnexpectedCallException If no appropriate method prophecy found
*/
public function makeCall(ObjectProphecy $prophecy, $methodName, array $arguments)
{
// For efficiency exclude 'args' from the generated backtrace
// Limit backtrace to last 3 calls as we don't use the rest
$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
$file = $line = null;
if (isset($backtrace[2]) && isset($backtrace[2]['file'])) {
$file = $backtrace[2]['file'];
$line = $backtrace[2]['line'];
}
// If no method prophecies defined, then it's a dummy, so we'll just return null
if ('__destruct' === strtolower($methodName) || 0 == count($prophecy->getMethodProphecies())) {
$this->recordedCalls[] = new Call($methodName, $arguments, null, null, $file, $line);
return null;
}
// There are method prophecies, so it's a fake/stub. Searching prophecy for this call
$matches = $this->findMethodProphecies($prophecy, $methodName, $arguments);
// If fake/stub doesn't have method prophecy for this call - throw exception
if (!count($matches)) {
$this->unexpectedCalls->attach(new Call($methodName, $arguments, null, null, $file, $line), $prophecy);
$this->recordedCalls[] = new Call($methodName, $arguments, null, null, $file, $line);
return null;
}
// Sort matches by their score value
@usort($matches, function ($match1, $match2) { return $match2[0] - $match1[0]; });
$score = $matches[0][0];
// If Highest rated method prophecy has a promise - execute it or return null instead
$methodProphecy = $matches[0][1];
$returnValue = null;
$exception = null;
if ($promise = $methodProphecy->getPromise()) {
try {
$returnValue = $promise->execute($arguments, $prophecy, $methodProphecy);
} catch (\Exception $e) {
$exception = $e;
}
}
if ($methodProphecy->hasReturnVoid() && $returnValue !== null) {
throw new MethodProphecyException(
"The method \"$methodName\" has a void return type, but the promise returned a value",
$methodProphecy
);
}
$this->recordedCalls[] = $call = new Call(
$methodName, $arguments, $returnValue, $exception, $file, $line
);
$call->addScore($methodProphecy->getArgumentsWildcard(), $score);
if (null !== $exception) {
throw $exception;
}
return $returnValue;
}
/**
* Searches for calls by method name & arguments wildcard.
*
* @param string $methodName
* @param ArgumentsWildcard $wildcard
*
* @return Call[]
*/
public function findCalls($methodName, ArgumentsWildcard $wildcard)
{
$methodName = strtolower($methodName);
return array_values(
array_filter($this->recordedCalls, function (Call $call) use ($methodName, $wildcard) {
return $methodName === strtolower($call->getMethodName())
&& 0 < $call->getScore($wildcard)
;
})
);
}
/**
* @throws UnexpectedCallException
*/
public function checkUnexpectedCalls()
{
/** @var Call $call */
foreach ($this->unexpectedCalls as $call) {
$prophecy = $this->unexpectedCalls[$call];
// If fake/stub doesn't have method prophecy for this call - throw exception
if (!count($this->findMethodProphecies($prophecy, $call->getMethodName(), $call->getArguments()))) {
throw $this->createUnexpectedCallException($prophecy, $call->getMethodName(), $call->getArguments());
}
}
}
private function createUnexpectedCallException(ObjectProphecy $prophecy, $methodName,
array $arguments)
{
$classname = get_class($prophecy->reveal());
$indentationLength = 8; // looks good
$argstring = implode(
",\n",
$this->indentArguments(
array_map(array($this->util, 'stringify'), $arguments),
$indentationLength
)
);
$expected = array();
foreach (array_merge(...array_values($prophecy->getMethodProphecies())) as $methodProphecy) {
$expected[] = sprintf(
" - %s(\n" .
"%s\n" .
" )",
$methodProphecy->getMethodName(),
implode(
",\n",
$this->indentArguments(
array_map('strval', $methodProphecy->getArgumentsWildcard()->getTokens()),
$indentationLength
)
)
);
}
return new UnexpectedCallException(
sprintf(
"Unexpected method call on %s:\n".
" - %s(\n".
"%s\n".
" )\n".
"expected calls were:\n".
"%s",
$classname, $methodName, $argstring, implode("\n", $expected)
),
$prophecy, $methodName, $arguments
);
}
private function indentArguments(array $arguments, $indentationLength)
{
return preg_replace_callback(
'/^/m',
function () use ($indentationLength) {
return str_repeat(' ', $indentationLength);
},
$arguments
);
}
/**
* @param ObjectProphecy $prophecy
* @param string $methodName
* @param array $arguments
*
* @return array
*/
private function findMethodProphecies(ObjectProphecy $prophecy, $methodName, array $arguments)
{
$matches = array();
foreach ($prophecy->getMethodProphecies($methodName) as $methodProphecy) {
if (0 < $score = $methodProphecy->getArgumentsWildcard()->scoreArguments($arguments)) {
$matches[] = array($score, $methodProphecy);
}
}
return $matches;
}
}