如何使用 Mockito & Java 在方法中传递模拟参数
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How to pass mock parameter in a method using Mockito & Java
提问by Sumit
I have class like the following:
我有如下课程：
public class Service {
public String method1 (class1, class2){
//do something
return result //Returns a string based on something
}
}
I want to test the class Service by calling the method 'method1' with mocked parameter (objects of Class1 & Class2). I don't have any idea, how to do this using Mockito.Can anyone help me with the initial push ?
我想通过使用模拟参数（Class1 和 Class2 的对象）调用方法“method1”来测试类 Service。我不知道如何使用 Mockito 做到这一点。有人可以帮助我进行初始推送吗？
回答by Lorenzo Murrocu
If class1 and class2 are simple values or POJOs, you should just not mock them:
如果 class1 和 class2 是简单值或 POJO，则不应模拟它们：
public class ServiceTest {
Service service;
@Before
public void setup() throws Exception {
service = new Service();
}
@Test
public void testMethod1() throws Exception {
// Prepare data
Class1 class1 = new Class1();
Class2 class2 = new Class2();
// maybe set some values
....
// Test
String result = this.service.method1(class1, class2);
// asserts here...
}
}
If class1 and class2 are more complicated classes, like services, it is strange to pass them as arguments... However I don't want to discuss your design, so I will just write an example of how you can do it:
如果 class1 和 class2 是更复杂的类，如服务，将它们作为参数传递会很奇怪……但是我不想讨论你的设计，所以我只会写一个例子来说明你如何做到这一点：
public class ServiceTest {
Service service;
@Mock Class1 class1Mock;
@Mock Class2 class2Mock;
@Before
public void setup() throws Exception {
MockitoAnnotations.initMocks(this);
service = new Service();
}
@Test
public void testMethod1() throws Exception {
// Mock each invocation of the "do something" section of the method
when(class1Mock.someMethod).thenReturn(someValue1);
when(class2Mock.someMethod).thenReturn(someValue2);
....
// Test
String result = this.service.method1(class1Mock, class2Mock);
// asserts here...
}
}
