Fixed #4754

framework/test/BaseActiveFixture.php

@@ -105,4 +105,11 @@ abstract class BaseActiveFixture extends DbFixture implements \IteratorAggregate
             throw new InvalidConfigException("Fixture data file does not exist: {$this->dataFile}");
         }
     }
+	
+	public function unload()
+    {
+        parent::unload();
+		$this->data = [];
+        $this->_models = [];
+    }
 }