在 JUnit 中进行测试时,有什么方法可以模拟静态 util 方法吗?
Is there any way we can mock the static util method while testing in JUnit?
我知道 Powermock 可以模拟静态调用,但我不想使用 Powermock.
I know Powermock can mock static calls, but I don't want to use Powermock.
还有其他选择吗?
推荐答案(不过我假设你可以使用 Mockito)我没有想到任何专门的东西,但是当涉及到这样的情况时,我倾向于使用以下策略:
(I assume you can use Mockito though) Nothing dedicated comes to my mind but I tend to use the following strategy when it comes to situations like that:
1) 在被测类中,将静态直接调用替换为对封装静态调用本身的包级方法的调用:
1) In the class under test, replace the static direct call with a call to a package level method that wraps the static call itself:
public class ToBeTested{ public void myMethodToTest(){ ... String s = makeStaticWrappedCall(); ... } String makeStaticWrappedCall(){ return Util.staticMethodCall(); } }2) 在测试和模拟封装的包级方法时监视被测类:
2) Spy the class under test while testing and mock the wrapped package level method:
public class ToBeTestedTest{ @Spy ToBeTested tbTestedSpy = new ToBeTested(); @Before public void init(){ MockitoAnnotations.initMocks(this); } @Test public void myMethodToTestTest() throws Exception{ // Arrange doReturn("Expected String").when(tbTestedSpy).makeStaticWrappedCall(); // Act tbTestedSpy.myMethodToTest(); } }这是我写的一篇关于间谍的文章,其中包括类似的案例,如果您需要更多见解:sourceartists/mockito-spying
Here is an article I wrote on spying that includes similar case, if you need more insight: sourceartists/mockito-spying
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