@Test
public void testDrive() {
Car testCar = new Car(50);
testCar.addGas(20);
testCar.drive(25);
double gallons = testCar.getGasInTank();
assertEquals(19.5, gallons, 1e-6);
testCar.drive(100);
gallons = testCar.getGasInTank();
assertEquals(17.5, gallons, 1e-6);
}
@Test
public void test() {
Car car = new Car(50);
car.addGas(20); // Tank 20 gallons
car.drive(100); // Drive 100 miles
double gasLeft = car.getGasInTank(); // Get gas remaining in tank
// expected 18
assertEquals(18, gasLeft, 0);
}