'My First Trip']); $I->assertTrue($trip->save()); } public function canSaveFlightRelation(FunctionalTester $I) { $flight = $I->have(Flights::class)->first(); $trip = $I->have(Trips::class)->first(); $I->assertInstanceOf(Trips::class, $trip); $trip->flights()->attach($flight->id); $I->assertEquals($flight->id, $trip->flights()->first()->id); } }