ignore PhpParser\Node\Expr\Variable in ContainerInterfaceUnknownServiceRule

Author: mzk

src/Rules/ContainerInterfaceUnknownServiceRule.php

@@ -12,6 +12,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\Variable;
 
 final class ContainerInterfaceUnknownServiceRule implements Rule
 {
@@ -41,6 +42,7 @@ public function processNode(Node $node, Scope $scope): array
 			if (($isInstanceOfController || $isContainerInterface)
 				&& isset($node->args[0])
 				&& $node->args[0] instanceof Arg
+				&& !$node->args[0]->value instanceof Variable
 			) {
 				$service = $this->serviceMap->getServiceFromNode($node->args[0]->value);
 				if ($service === \null) {

tests/Rules/data/ExampleController.php

@@ -21,4 +21,10 @@ public function getUnknownService()
 		$service->noMethod();
 	}
 
+	public function getVariableService(string $serviceKey)
+	{
+		$service = $this->get($serviceKey);
+		$service->noMethod();
+	}
+
 }