java - Mockito 和 PowerMockito 错误

Question

以下代码适用于 PowerMockito 版本 1.7.3 和 Mockito 版本 2.9.0

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

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

@RunWith(PowerMockRunner.class)
@PrepareForTest({FileUtils.class, Paths.class, Files.class})
public class FileUtilsTest {

    @Test
    public void testGetFileContents_Success() throws Exception {
        String filePath = "c:\\temp\\file.txt";

        Path mockPath = PowerMockito.mock(Path.class);
        PowerMockito.mockStatic(Paths.class);
        PowerMockito.mockStatic(Files.class);

        Mockito.when(Paths.get(Mockito.anyString())).thenReturn(mockPath);
        Mockito.when(Files.readAllBytes(Mockito.isA(Path.class))).thenReturn("hello".getBytes());

        String fileContents = FileUtils.getFileContents(filePath);
        assertNotNull(fileContents);
        assertTrue(fileContents.length() > 0);

        PowerMockito.verifyStatic(Paths.class);
        Paths.get(Mockito.anyString());
        PowerMockito.verifyStatic(Files.class);
        Files.readAllBytes(Mockito.isA(Path.class));
    }

}

但是 - 当我转到以下版本时 - PowerMockito 版本 2.0.0-beta.5 和 Mockito 版本 2.12.0 - 我收到以下错误

    org.mockito.exceptions.base.MockitoException: 
Cannot mock/spy class java.nio.file.Paths
Mockito cannot mock/spy because :
 - final class

有什么想法可能导致此问题或我需要更改什么吗？

谢谢达米恩

Answer 1

我认为您必须降级/推迟升级到 PowerMock v2.x。

参见PowerMockito not compatible Mockito2 since their v2.0.55-beta release .

所有 PowerMock v2.x/Mockito v2.x 集成工作都包含在这两个问题中:

• PowerMock:https://github.com/powermock/powermock/issues/726
• Mockito:https://github.com/mockito/mockito/issues/1110

看起来目标是在 PowerMock v2.0.0(以及某些 Mockito 2.x 版本)中运行此功能，但没有明确说明何时可用。