fix(test): return on tear down if client is null

Author: tharropoulos

tests/TestCase.php

@@ -89,6 +89,10 @@ protected function setUpDocuments(string $schema): void
 
     protected function tearDownTypesense(): void
     {
+        if ($this->typesenseClient === null) {
+            return;
+        }
+        
         $collections = $this->typesenseClient->collections->retrieve();
         foreach ($collections as $collection) {
             $this->typesenseClient->collections[$collection['name']]->delete();