对下面三个类进行单元测试 ，组成套件测试。

public class Calculate {    public int add(int a, int b) {        return a + b;    }    public int sub(int a, int b) {        return a - b;    }}

public class Car {    public int getWheels() {        return 4;    }}

public class  Rectangle{    public int getArea(int width,int height){        return width*height;    }}

 测试代码：建议把测试代码放在test源文件中

public class CalculateTest {    Calculate calculate;    @Before    public void setUp() throws Exception {        calculate = new Calculate();    }    @Test    public void testAdd() {        int result = calculate.add(12, 12);        assertEquals(24, result);    }    @Test    public void testSub() {        int result = calculate.sub(12, 12);        assertEquals(0, result);    }}

public class CarTest {    Car car;    @Before    public void setUp() throws Exception {        car = new Car();    }    @Test    public void testGetWheels() {        int result = car.getWheels();        assertEquals(4, result);    }}

public class RectangleTest {    Rectangle rectangle;    @Before    public void setUp() throws Exception {        rectangle=new Rectangle();    }    @Test    public void testGetArea() {        int result = rectangle.getArea(12, 2);        assertEquals(24, result);    }}

测试套件代码：

@RunWith(Suite.class)@SuiteClasses({ CalculateTest.class, CarTest.class, RectangleTest.class })public class AllTests {}

 

请用下面的参数对Calculate类的add方法进行参数化的测试

              {2,1,1},

              {2,0,2},

              {0,2,-2},

@RunWith(Parameterized.class)public class CalculateTest2 {    Calculate calculate;    private int input1;    private int input2;    private int expected;    @Parameters    public static Collection prepareData() {        Object[][] object = { { -1, -2, -3 }, { 0, 2, 2 }, { -1, 1, 0 },                { 1, 2, 3 } };        return Arrays.asList(object);    }    public CalculateTest2(int input1, int input2, int expected) {        this.input1 = input1;        this.input2 = input2;        this.expected = expected;    }    @Before    public void setUp() throws Exception {        calculate = new Calculate();    }    @Test    public void testAdd() {        int result = calculate.add(input1, input2);        assertEquals(expected, result);    }}