chore: test firstOrCreate method for the model (#2399)

tests/ModelTest.php

@@ -768,4 +768,23 @@ public function testGuardedModel()
  $model->fill(['level1' => $dataValues]);
  $this->assertEquals($dataValues, $model->getAttribute('level1'));
  }
+
+ public function testFirstOrCreate(): void
+ {
+ $name = 'Jane Poe';
+
+ /** @var User $user */
+ $user = User::where('name', $name)->first();
+ $this->assertNull($user);
+
+ /** @var User $user */
+ $user = User::firstOrCreate(compact('name'));
+ $this->assertInstanceOf(Model::class, $user);
+ $this->assertTrue($user->exists);
+ $this->assertEquals($name, $user->name);
+
+ /** @var User $check */
+ $check = User::where('name', $name)->first();
+ $this->assertEquals($user->_id, $check->_id);
+ }
 }