[9.x] Add ->set() method to factory (#41890)

* Add ->set() method to factory

* Formatting

* Update Factory.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

Author: ralphjsmit

src/Illuminate/Database/Eloquent/Factories/Factory.php

@@ -483,6 +483,18 @@ public function state($state)
         ]);
     }
 
+    /**
+     * Set a single model attribute.
+     *
+     * @param  string|int  $key
+     * @param  mixed  $value
+     * @return static
+     */
+    public function set($key, $value)
+    {
+        return $this->state([$key => $value]);
+    }
+
     /**
      * Add a new sequenced state transformation to the model definition.
      *

tests/Database/DatabaseEloquentFactoryTest.php

@@ -108,6 +108,10 @@ public function test_basic_model_can_be_created()
         $this->assertInstanceOf(Eloquent::class, $user);
         $this->assertSame('Taylor Otwell', $user->name);
 
+        $user = FactoryTestUserFactory::new()->set('name', 'Taylor Otwell')->create();
+        $this->assertInstanceOf(Eloquent::class, $user);
+        $this->assertSame('Taylor Otwell', $user->name);
+
         $users = FactoryTestUserFactory::new()->createMany([
             ['name' => 'Taylor Otwell'],
             ['name' => 'Jeffrey Way'],