public function testBelongsToRelationForeignKeyIsSaved() { $owner = new User(); $owner->name = 'Mickey Mouse'; $owner->save(); $car = new Car(); $car->color = 'red'; $car->fuel = 'unleaded'; $car->cruft = 'red is my favorite'; $car->owner()->associate($owner); $car->save(); $dbCar = DB::table('vehicles')->first(); $this->assertEquals($car->id, $dbCar->id); $this->assertEquals($owner->id, $dbCar->owner_id); }