PowerMockito 如何捕获传递给模拟对象的参数？

Question

我正在尝试使用 PowerMockito 捕获传入模拟对象的参数，这是代码：

//I create a mock object
ClassMocked mock = PowerMockito.mock(ClassMocked.class);

//Create the captor that will capture the String passed in input to the mock object
ArgumentCaptor<String> argumentCaptor = ArgumentCaptor.forClass(String.class);

//When the method put is executed on my mock I want the second parameter (that is a String) to be captured
Mockito.verify(mock).put(anyString(), inputDataMapCaptor.capture());

//Creates the instance of the class that I want to test passing the mock as parameter
ClassToTest instance = new ClassToTest(mock);

//Executes the method that I want to test
instance.methodToTest();

/* I know that during the execution of "methodToTest()" mock.put(String,String) will be executed and I want to get the second string parameter. */

当我执行测试时，我在执行 Mockito.verify(mock).put(...) 行时出现异常；

"Wanted but not invoked mock.put(any,Capturing argument);"

怎么了？

Answer 1

你应该在 Mockito.verify(mock).put(anyString(), inputDataMapCaptor.capture());

之前调用 instance.methodToTest();

Answer 2

verify() 验证指定的方法调用确实发生了。

您无法验证"upfront"方法调用是否应该发生。

因此：verify()需要发生在事实之后，而不是之前！

PowerMockito 如何捕获传递给模拟对象的参数？

PowerMockito how to capture a parameter passed to a mock object?

java

junit

unit-testing

mockito

powermockito