java - 在 Mockito 2 中 stub 静态方法会抛出 InvalidUseOfMatchersException

Question

我有一个类，我使用 Powermock + Mockito 来抑制实用程序类中的静态方法。它与 Powermock 1.6.2 和 Mockito 1.10.19 配合得很好，但我的任务是迁移到 Java 10(JRE:我们仍在使用 Java 8 进行编译)，所以我已经迁移到 Powermock 2(目前处于测试阶段) )和 Mockito 2.16.1。现在，我一直得到 org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Misplaced or misused argument matcher detected here 。

一个简单的例子，MyMockito.java:

import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import java.lang.reflect.Method;

import static org.mockito.Mockito.any;
import static org.powermock.api.mockito.PowerMockito.spy;
import static org.powermock.api.mockito.PowerMockito.when;
import static org.powermock.api.support.membermodification.MemberMatcher.method;
import static org.powermock.api.support.membermodification.MemberModifier.suppress;

@RunWith(PowerMockRunner.class)
@PrepareForTest(StringMeasurer.class)
public class MyMockito {
    @Test
    public void testSuppressMethod() throws Exception {
        spy(StringMeasurer.class);
        Method measure = method(StringMeasurer.class, "measure", String.class);
        suppress(measure);
        when(StringMeasurer.class, measure)
                .withArguments(any(String.class))
                .thenReturn(10);
        System.out.println(StringMeasurer.measure("Hello"));
    }

和 StringMeasurer.java:

    public class StringMeasurer {
        private StringMeasurer() {}
        public static int measure(String s) {
            return s.length();
        }
    }
}

我假设要么对如何使用匹配器来匹配 stub 静态方法中的参数进行了一些更改，要么这应该永远在 Mockito 2 中不起作用并以某种方式通过(或者这可能是 Powermock beta 中的一个错误)。谁能告诉我我做错了什么？

Answer 1

PowerMock 2.0.0-beta.5的工作解决方案:

import static org.mockito.ArgumentMatchers.any;
import static org.powermock.api.mockito.PowerMockito.when;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest(StringMeasurer.class)
public class MyMockito {
    @Test
    public void testSuppressMethod() throws Exception {
        PowerMockito.mockStatic(StringMeasurer.class);
        when(StringMeasurer.measure(any(String.class))).thenReturn(10);
        System.out.println(StringMeasurer.measure("Hello"));
    }
}

更多详细信息可以参见PowerMock官方文档:Mocking Static Method