问题描述
通常在使用mockito时我会做类似
Normally when using mockito I will do something like
Mockito.when(myObject.myFunction(myParameter)).thenReturn(myResult);
是否有可能做点什么
myParameter.setProperty("value");
Mockito.when(myObject.myFunction(myParameter)).thenReturn("myResult");
myParameter.setProperty("otherValue");
Mockito.when(myObject.myFunction(myParameter)).thenReturn("otherResult");
所以而不是仅使用参数来确定结果。它使用参数内的属性值来确定结果。
So rather than when just using the parameter to determine the result. It is using a value of a property inside the parameter to determine the result.
所以当代码执行时它的行为就像这样
so when the code is executed it behaves like so
public void myTestMethod(MyParameter myParameter,MyObject myObject){
myParameter.setProperty("value");
System.out.println(myObject.myFunction(myParameter));// outputs myResult
myParameter.setProperty("otherValue");
System.out.println(myObject.myFunction(myParameter));// outputs otherResult
}
目前的解决方案,希望可以提出更好的建议。
current solution, hopefully something better can be suggested.
private class MyObjectMatcher extends ArgumentMatcher<MyObject> {
private final String compareValue;
public ApplicationContextMatcher(String compareValue) {
this.compareValue= compareValue;
}
@Override
public boolean matches(Object argument) {
MyObject item= (MyObject) argument;
if(compareValue!= null){
if (item != null) {
return compareValue.equals(item.getMyParameter());
}
}else {
return item == null || item.getMyParameter() == null;
}
return false;
}
}
public void initMock(MyObject myObject){
MyObjectMatcher valueMatcher = new MyObjectMatcher("value");
MyObjectMatcher otherValueMatcher = new MyObjectMatcher("otherValue");
Mockito.when(myObject.myFunction(Matchers.argThat(valueMatcher))).thenReturn("myResult");
Mockito.when(myObject.myFunction(Matchers.argThat(otherValueMatcher))).thenReturn("otherResult");
}
推荐答案
这是一种方法。这使用 Answer
对象来检查属性的值。
Here's one way of doing it. This uses an Answer
object to check the value of the property.
@RunWith(MockitoJUnitRunner.class)
public class MyTestClass {
private String theProperty;
@Mock private MyClass mockObject;
@Before
public void setUp() {
when(mockObject.myMethod(anyString())).thenAnswer(
new Answer<String>(){
@Override
public String answer(InvocationOnMock invocation){
if ("value".equals(theProperty)){
return "result";
}
else if("otherValue".equals(theProperty)) {
return "otherResult";
}
return theProperty;
}});
}
}
有一种替代语法,我实际上更喜欢它,将实现完全相同的事情。在你的选择中选择哪一个。这只是 setUp
方法 - 测试类的其余部分应与上面相同。
There's an alternative syntax, which I actually prefer, which will achieve exactly the same thing. Over to you which one of these you choose. This is just the setUp
method - the rest of the test class should be the same as above.
@Before
public void setUp() {
doAnswer(new Answer<String>(){
@Override
public String answer(InvocationOnMock invocation){
if ("value".equals(theProperty)){
return "result";
}
else if("otherValue".equals(theProperty)) {
return "otherResult";
}
return theProperty;
}}).when(mockObject).myMethod(anyString());
}
这篇关于mockito返回值基于参数的属性的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!