Powermock calling actual private method instead of mocking - spring-boot

Question

I want to mock the private method "downloadFromNexus" but instead of mocking, actual method gets called while trying to mock here PowerMockito.doReturn("").when(spy, "downloadFromNexus", "", "");
#Component(value = "DownloadXFile")
#Order(1)
#Slf4j
public class DownloadXFile implements DownloadJarFiles {
#Value("${path}")
private String path;
#Override
public void download() throws IOException {
....
downloadFromNexus(path, outputFilePath);
log.info("jar {} downloaded", jar);
}
private void downloadFromNexus(final String url, final String outputFilePath) throws IOException {
FileUtils.copyURLToFile(
new URL(url),
new File(outputFilePath),
2000,
2000);
}
}
Test
#RunWith(PowerMockRunner.class)
#PrepareForTest(DownloadXFile.class)
#SpringBootTest(classes = DownloadXFile.class)
class DownloadXTest {
#Autowired
DownloadXFile downloadXFile;
#Test
public void test() throws Exception {
final DownloadXFilespy = PowerMockito.spy(downloadXFile);
PowerMockito.doReturn("").when(spy, "downloadFromNexus", "", "");
downloadXFile.download();
PowerMockito.verifyPrivate(spy, Mockito.times(1)).invoke("downloadFromNexus");
}
}
pom.xml
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.7.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito2</artifactId>
<version>1.6.6</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mockito/mockito-all -->
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.0.42-beta</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

Answer 1

You called downloadXFile.download(); on original object instead of the spy.