Handle Carbon setTestNow with no arguments (#242)

src/Rector/StaticCall/CarbonSetTestNowToTravelToRector.php

@@ -3,6 +3,7 @@
 namespace RectorLaravel\Rector\StaticCall;
 
 use PhpParser\Node;
+use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Expr\Variable;
@@ -87,7 +88,15 @@ public function refactorWithScope(Node $node, Scope $scope): ?MethodCall
             return null;
         }
 
-        return $this->nodeFactory->createMethodCall(new Variable('this'), 'travelTo', $node->args);
+        $args = $node->args === []
+            ? [new Arg($this->nodeFactory->createNull())]
+            : $node->args;
+
+        return $this->nodeFactory->createMethodCall(
+            new Variable('this'),
+            'travelTo',
+            $args,
+        );
     }
 
     private function isCarbon(Node $node): bool

tests/Rector/StaticCall/CarbonSetTestNowToTravelToRector/Fixture/with_no_arguments.php.inc

@@ -0,0 +1,33 @@
+<?php
+
+namespace RectorLaravel\Tests\Rector\StaticCall\CarbonSetTestNowToTravelToRector\Fixture;
+
+use Illuminate\Foundation\Testing\TestCase;
+use Carbon\Carbon;
+
+class SomeTest extends TestCase
+{
+    public function test()
+    {
+        Carbon::setTestNow();
+    }
+}
+
+?>
+-----
+<?php
+
+namespace RectorLaravel\Tests\Rector\StaticCall\CarbonSetTestNowToTravelToRector\Fixture;
+
+use Illuminate\Foundation\Testing\TestCase;
+use Carbon\Carbon;
+
+class SomeTest extends TestCase
+{
+    public function test()
+    {
+        $this->travelTo(null);
+    }
+}
+
+?>