Warn when classes are used in testing environment; this means tests aren't efficient.

app/Support/Search/Search.php

@@ -55,6 +55,11 @@ class Search implements SearchInterface
     {
         $this->modifiers      = new Collection;
         $this->validModifiers = (array)config('firefly.search_modifiers');
+
+        if ('testing' === env('APP_ENV')) {
+            Log::warning(sprintf('%s should not be instantiated in the TEST environment!', \get_class($this)));
+        }
+
     }
 
     /**