Finish path identification - configurability & exception handling

src/Middleware/InitializeTenancyByPath.php

@@ -5,6 +5,7 @@ namespace Stancl\Tenancy\Middleware;
 use Closure;
 use Illuminate\Http\Request;
 use Illuminate\Routing\Route;
+use Stancl\Tenancy\Exceptions\RouteIsMissingTenantParameterException;
 use Stancl\Tenancy\Resolvers\PathTenantResolver;
 use Stancl\Tenancy\Tenancy;
 
@@ -27,15 +28,16 @@ class InitializeTenancyByPath extends IdentificationMiddleware
         /** @var Route $route */
         $route = $request->route();
 
-        // todo test the behavior described by the comment
         // Only initialize tenancy if tenant is the first parameter
         // We don't want to initialize tenancy if the tenant is
         // simply injected into some route controller action.
-        if ($route->parameterNames()[0] === 'tenant') {
+        if ($route->parameterNames()[0] === PathTenantResolver::$tenantParameterName) {
             return $this->initializeTenancy(
                 $request, $next, $route
             );
-        } // todo else case should probably throw exception about malformed route? or do we just leave that as the developer's responsibility?
+        } else {
+            throw new RouteIsMissingTenantParameterException;
+        }
 
         return $next($request);
     }