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<?php
namespace Illuminate\Support\Facades;
use Mockery;
use RuntimeException;
use Mockery\MockInterface;
abstract class Facade
{
/**
* The application instance being facaded.
*
* @var \Illuminate\Contracts\Foundation\Application
*/
protected static $app;
/**
* The resolved object instances.
*
* @var array
*/
protected static $resolvedInstance;
/**
* Hotswap the underlying instance behind the facade.
*
* @param mixed $instance
* @return void
*/
public static function swap($instance)
{
static::$resolvedInstance[static::getFacadeAccessor()] = $instance;
static::$app->instance(static::getFacadeAccessor(), $instance);
}
/**
* Convert the facade into a Mockery spy.
*
* @return void
*/
public static function spy()
{
$name = static::getFacadeAccessor();
if (static::isMock()) {
$mock = static::$resolvedInstance[$name];
} else {
$class = static::getMockableClass($name);
$mock = $class ? Mockery::spy($class) : Mockery::spy();
static::$resolvedInstance[$name] = $mock;
if (isset(static::$app)) {
static::$app->instance($name, $mock);
}
}
}
/**
* Initiate a mock expectation on the facade.
*
* @return \Mockery\Expectation
*/
public static function shouldReceive()
{
$name = static::getFacadeAccessor();
if (static::isMock()) {
$mock = static::$resolvedInstance[$name];
} else {
$mock = static::createFreshMockInstance($name);
}
return call_user_func_array([$mock, 'shouldReceive'], func_get_args());
}
/**
* Create a fresh mock instance for the given class.
*
* @param string $name
* @return \Mockery\Expectation
*/
protected static function createFreshMockInstance($name)
{
static::$resolvedInstance[$name] = $mock = static::createMockByName($name);
$mock->shouldAllowMockingProtectedMethods();
if (isset(static::$app)) {
static::$app->instance($name, $mock);
}
return $mock;
}
/**
* Create a fresh mock instance for the given class.
*
* @param string $name
* @return \Mockery\Expectation
*/
protected static function createMockByName($name)
{
$class = static::getMockableClass($name);
return $class ? Mockery::mock($class) : Mockery::mock();
}
/**
* Determines whether a mock is set as the instance of the facade.
*
* @return bool
*/
protected static function isMock()
{
$name = static::getFacadeAccessor();
return isset(static::$resolvedInstance[$name]) &&
static::$resolvedInstance[$name] instanceof MockInterface;
}
/**
* Get the mockable class for the bound instance.
*
* @return string|null
*/
protected static function getMockableClass()
{
if ($root = static::getFacadeRoot()) {
return get_class($root);
}
}
/**
* Get the root object behind the facade.
*
* @return mixed
*/
public static function getFacadeRoot()
{
return static::resolveFacadeInstance(static::getFacadeAccessor());
}
/**
* Get the registered name of the component.
*
* @return string
*
* @throws \RuntimeException
*/
protected static function getFacadeAccessor()
{
throw new RuntimeException('Facade does not implement getFacadeAccessor method.');
}
/**
* Resolve the facade root instance from the container.
*
* @param string|object $name
* @return mixed
*/
protected static function resolveFacadeInstance($name)
{
if (is_object($name)) {
return $name;
}
if (isset(static::$resolvedInstance[$name])) {
return static::$resolvedInstance[$name];
}
return static::$resolvedInstance[$name] = static::$app[$name];
}
/**
* Clear a resolved facade instance.
*
* @param string $name
* @return void
*/
public static function clearResolvedInstance($name)
{
unset(static::$resolvedInstance[$name]);
}
/**
* Clear all of the resolved instances.
*
* @return void
*/
public static function clearResolvedInstances()
{
static::$resolvedInstance = [];
}
/**
* Get the application instance behind the facade.
*
* @return \Illuminate\Contracts\Foundation\Application
*/
public static function getFacadeApplication()
{
return static::$app;
}
/**
* Set the application instance.
*
* @param \Illuminate\Contracts\Foundation\Application $app
* @return void
*/
public static function setFacadeApplication($app)
{
static::$app = $app;
}
/**
* Handle dynamic, static calls to the object.
*
* @param string $method
* @param array $args
* @return mixed
*
* @throws \RuntimeException
*/
public static function __callStatic($method, $args)
{
$instance = static::getFacadeRoot();
if (! $instance) {
throw new RuntimeException('A facade root has not been set.');
}
return $instance->$method(...$args);
}
}
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