java Mockito - 拦截模拟上的任何方法调用
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10839253/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Mockito - intercept any method invocation on a mock
提问by Karle
Is it possible to intercept all method invocations on a mock in a generic way?
是否可以以通用方式拦截模拟上的所有方法调用？
Example
例子
Given a vendor provided class such as:
给定供应商提供的类，例如：
public class VendorObject {
public int someIntMethod() {
// ...
}
public String someStringMethod() {
// ...
}
}
I would like to create a mock that re-directs allmethod calls to another class where there are matching method signatures:
我想创建一个模拟，将所有方法调用重定向到另一个具有匹配方法签名的类：
public class RedirectedToObject {
public int someIntMethod() {
// Accepts re-direct
}
}
The when().thenAnswer() construct in Mockito seems to fit the bill but I cannot find a way to match any method call with any args. The InvocationOnMock certainly gives me all these details anyway. Is there a generic way to do this? Something that would look like this, where the when(vo.*) is replaced with appropriate code:
Mockito 中的 when().thenAnswer() 构造似乎符合要求，但我找不到将任何方法调用与任何参数匹配的方法。无论如何，InvocationOnMock 肯定给了我所有这些细节。有没有通用的方法来做到这一点？看起来像这样的东西，其中 when(vo.*) 被替换为适当的代码：
VendorObject vo = mock(VendorObject.class);
when(vo.anyMethod(anyArgs)).thenAnswer(
new Answer() {
@Override
public Object answer(InvocationOnMock invocation) {
// 1. Check if method exists on RedirectToObject.
// 2a. If it does, call the method with the args and return the result.
// 2b. If it does not, throw an exception to fail the unit test.
}
}
);
Adding wrappers around the vendor classes to make mocking easy is not an option because:
在供应商类周围添加包装器以简化模拟不是一种选择，因为：
- Too large an existing code base.
- Part of extremely performance critical applications.
- 现有代码库太大。
- 极端性能关键应用程序的一部分。
回答by jhericks
I think what you want is:
我想你想要的是：
VendorObject vo = mock(VendorObject.class, new Answer() {
@Override
public Object answer(InvocationOnMock invocation) {
// 1. Check if method exists on RedirectToObject.
// 2a. If it does, call the method with the args and return the
// result.
// 2b. If it does not, throw an exception to fail the unit test.
}
});
Of course, if you want to use this approach frequently, no need for the Answer to be anonymous.
当然，如果你想经常使用这种方式，也不需要Answer是匿名的。
From the documentation: "It's quite advanced feature and typically you don't need it to write decent tests. However it can be helpful when working with legacy systems." Sounds like you.
来自文档：“这是非常高级的功能，通常您不需要它来编写体面的测试。但是，在使用遗留系统时它会很有帮助。” 听起来像你。
