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<?php
declare(strict_types=1);
namespace PHPUnit\Architecture\Asserts\Dependencies;
use PHPUnit\Architecture\Elements\Layer\Layer;
/**
* Asserts for objects dependencies
*/
trait DependenciesAsserts
{
abstract public static function assertNotEquals($expected, $actual, string $message = ''): void;
abstract public static function assertEquals($expected, $actual, string $message = ''): void;
/**
* Check layerA does not depend on layerB
*
* @param Layer|Layer[] $layerA
* @param Layer|Layer[] $layerB
*/
public function assertDoesNotDependOn($layerA, $layerB): void
{
$names = $this->getObjectsWhichUsesOnLayerAFromLayerB($layerA, $layerB);
self::assertEquals(
0,
count($names),
'Found dependencies: ' . implode("\n", $names)
);
}
/**
* Check layerA does not depend on layerB
*
* @param Layer|Layer[] $layerA
* @param Layer|Layer[] $layerB
*/
public function assertDependOn($layerA, $layerB): void
{
$names = $this->getObjectsWhichUsesOnLayerAFromLayerB($layerA, $layerB);
self::assertNotEquals(
0,
count($names),
'Dependencies not found'
);
}
/**
* Get objects which uses on layer A from layer B
*
* @param Layer|Layer[] $layerA
* @param Layer|Layer[] $layerB
*
* @return string[]
*/
private function getObjectsWhichUsesOnLayerAFromLayerB($layerA, $layerB): array
{
/** @var Layer[] $layers */
$layers = is_array($layerA) ? $layerA : [$layerA];
/** @var Layer[] $layersToSearch */
$layersToSearch = is_array($layerB) ? $layerB : [$layerB];
$result = [];
foreach ($layers as $layer) {
foreach ($layer as $object) {
foreach ($object->uses as $use) {
foreach ($layersToSearch as $layerToSearch) {
// do not test layer with self
if ($layer->equals($layerToSearch)) {
continue;
}
foreach ($layerToSearch as $objectToSearch) {
if ($objectToSearch->name === $use) {
$result[] = "$object->name <- $objectToSearch->name";
}
}
}
}
}
}
return $result;
}
}
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