我一直在使用JMockit来模拟机器人的依赖关系(例如传感器,操纵杆等)。对于我的班级测试之一,我需要模拟两个操纵杆对象。
在我拥有的代码中,操纵杆的实例化如下:
Joystick joystick1 = new Joystick(0);
Joystick joystick2 = new Joystick(1);
我一直在学习如何匹配Instance matching section in the JMockit documentation中对象的特定实例。
但是这些步骤似乎不适用于验证(或者我做错了),或者它们涉及在每个测试方法的参数中使用@Mocked
标记,鉴于事实,这很麻烦我希望这种行为能够在整个班级进行几次测试。
我不能简单地将模拟的实例注入到测试的类中,因为被测试的类实际上是从应用程序中的另一个类接收它们的,我宁愿不模拟自己的代码库以传递可注入的操纵杆。 p >
我要针对的行为是这样的:
public class ClassUsingJoysticksTest {
@Injectable
private Joystick joystick1;
@Injectable
private Joystick joystick2;
@Before
public void setUp() {
new Expectations() {{
new Joystick(0);
result = joystick1;
new Joystick(1);
result = joystick2;
}};
}
@Test
public void someTest() {
ClassThatUsesJoysticks classThatUsesJoysticks = new ClassThatUsesJoysticks();
classThatUsesJoysticks.doSomething();
new Verifications() {{
joystick1.setRumble(1D);
joystick2.setRumble(2D);
}};
}
}
被测课程的相关部分:
public class ClassThatUsesJoysticks {
public void doSomething() {
Joystick joystick1 = OI.getInstance().getJoystick1(); // OI is our own class.
Joystick joystick2 = OI.getInstance().getJoystick2();
joystick1.setRumble(1);
joystick2.setRumble(2);
}
}
// OI class that we used to keep track of operator interface.
public class OI {
private Joystick joystick1, joystick2;
public OI() {
joystick1 = new Joystick(0); // First joystick is always on port 0.
joystick2 = new Joystick(1); // Next joystick is port 1.
}
public Joystick getJoystick1() {
return joystick1;
}
public Joystick getJoystick2() {
return joystick2;
}
}
使用JMockit可以实现这种功能吗?
如果您愿意,可以here找到我尝试实现的实际实现(带有我自己的代码库的错误模拟)。
答案 0 :(得分:1)
我正在使用当前设置,例如documented。
public class ClassUsingJoysticksTest {
@Mocked Joystick joystick1;
@Mocked Joystick joystick2;
@Before
public void setUp() {
new Expectations() {
new Joystick(0);
result = joystick1;
new Joystick(1);
result = joystick2;
}
}
@Test
public void testRumbles() {
classThatUsesJoysticks.doSomething();
new Verifications() {{
joystick1.setRumble(1.0);
joystick2.setRumble(1.0);
}};
}
}
如果您想查看实际的实现,则代码为here。