Java PowerMockito.verifyStatic() 问题

PowerMockito.verifyStatic() Problems

提问by John A Qualls

I need to use PowerMockito to test if a specific static method is called. I am using the following PowerMockito and JUnit libraries ...

我需要使用 PowerMockito 来测试是否调用了特定的静态方法。我正在使用以下 PowerMockito 和 JUnit 库...

• powermock-mockito-1.6.2-full.jar
• junit-4.12.jar

• powermock-mockito-1.6.2-full.jar
• junit-4.12.jar

I am having issues getting the PowerMockito.verifyStatic() method to work properly. In the following code example, I have tried using the @PrepareForTest, and mockStatic(), and I have tried excluding them. In the code example I include them.

我在使 PowerMockito.verifyStatic() 方法正常工作时遇到问题。在以下代码示例中，我尝试使用 @PrepareForTest 和 mockStatic()，并尝试排除它们。在代码示例中，我包含了它们。

Test Class:

测试类：

import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import org.junit.Test;
import org.junit.runner.RunWith;

@RunWith(PowerMockRunner.class)
@PrepareForTest(Test1.class)
public class PowerMockTest {
    @Test
    public void staticVerifyTest() {
        PowerMockito.mockStatic(Test1.class);

        // Test
        PowerMockito.verifyStatic();
        //Test1.staticMethod();
    }
}

Class Under Test:

被测类：

public class Test1 {
    public static void staticMethod() {
        System.out.println("Static Method!");
    }
}

The test passes when it is run, but it should fail because Test1.staticMethod() is never called. Any help on this would be greatly appreciated!

测试在运行时通过，但它应该会失败，因为从未调用 Test1.staticMethod()。对此的任何帮助将不胜感激！

回答by John A Qualls

Alright, I figured it out thanks to Stefan Birkner's reference

好的，多亏了 Stefan Birkner 的参考，我才知道

Here is the correction to my sample code:

这是对我的示例代码的更正：

import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import org.junit.Test;
import org.junit.runner.RunWith;

@RunWith(PowerMockRunner.class)
@PrepareForTest(Test1.class)
public class PowerMockTest {
    @Test
    public void staticVerifyTest() {
        PowerMockito.mockStatic(Test1.class);
        // Test
        Test1.staticMethod();
        PowerMockito.verifyStatic();
        Test1.staticMethod();
    }
}

After the static method is invoked, you need to verify that it was called by calling it again after your verifyStatic() call.

调用静态方法后，您需要在调用 verifyStatic() 后再次调用它来验证它是否被调用。

i.e.

IE

        Test1.staticMethod();
        PowerMockito.verifyStatic();
        Test1.staticMethod();

You can also check if it was called multiple times like this...

您还可以检查它是否像这样被多次调用...

Test1.staticMethod();
Test1.staticMethod();
Test1.staticMethod();
PowerMockito.verifyStatic(Mockito.times(3));
Test1.staticMethod();

回答by Oliver Collins

For me, I encountered this issue when upgrading to powermock 2.0.0-beta.5from 1.7.0and so these solutions posted above DID NOThelp solve my problem. Instead, I had to add the mocked class inside of the verify static call as posted within the documentation for powermock (https://static.javadoc.io/org.powermock/powermock-api-mockito/1.7.1/deprecated-list.html)

对于我来说，我遇到了这个问题，当升级到powermock2.0.0-beta.5从1.7.0等这些解决方案上面贴没有帮助解决我的问题。相反，我必须在 powermock 文档中发布的 verify static 调用中添加模拟类（https://static.javadoc.io/org.powermock/powermock-api-mockito/1.7.1/deprecated-list .html)

So I went from:

所以我从：

PowerMockito.verifyStatic(Mockito.times(1));

to:

到：

PowerMockito.verifyStatic(Test1.class, Mockito.times(1));

This solved my problem when using the libraries below:

这解决了我在使用以下库时的问题：

testCompile group: 'org.mockito', name: 'mockito-core', version: '2.18.0'
testCompile group: 'org.powermock', name: 'powermock-api-mockito2', version: '2.0.0-beta.5'
testCompile group: 'org.powermock', name: 'powermock-module-junit4', version: '2.0.0-beta.5'

回答by Fabio

It's not an answer in itself but A) a confirmation that Oliver's comment about the method change is still valid at PowerMock 2.0.2 and B) a note with additional information on how it works.

这本身不是答案，而是 A) 确认 Oliver 关于方法更改的评论在 PowerMock 2.0.2 中仍然有效，以及 B) 附有有关其工作原理的附加信息的说明。

PowerMockito.verifyStatic()calls Mockito.verify()which has a few examples at its Javadoc:

PowerMockito.verifyStatic()调用Mockito.verify()，它的 Javadoc 中有一些示例：

verify(mock, times(5)).someMethod("was called five times");
verify(mock, atLeast(2)).someMethod("was called at least two times");

As this sintax is not available anymore we need 2 lines of code to declare the validation rule. Using John's example this means that the first 3 lines would be "actual" business calls and the one after verifyStaticis just telling it which call counter must match the 2nd parameter:

由于此语法不再可用，我们需要 2 行代码来声明验证规则。使用 John 的示例，这意味着前 3 行将是“实际”业务调用，而verifyStatic之后的一行只是告诉它哪个调用计数器必须与第二个参数匹配：

PowerMockito.mockStatic(Test1.class);

// Test
Test1.staticMethod();
Test1.staticMethod();
Test1.staticMethod();

// Validation
PowerMockito.verifyStatic(Test1.class, Mockito.times(3));
Test1.staticMethod();