使用@Capture Mockito 进行测试的问题

Problems testing with @Capture Mockito

我正在尝试用junit测试SftpSession.read方法,我不太确定测试这个方法的方法是什么,我使用的是@Captor,但我没有清楚地理解我可以实施这个测试吗?这是我的测试代码:

@Test
void getFileContent() throws IOException {
    String directory = "testDirectory";
    String fileName = "testFileName";
    ByteArrayOutputStream fileByteStream = new ByteArrayOutputStream();

    given(sessionFactory.getSession()).willReturn(sftpSession);

    sftpServiceImpl.getFileContent(directory, fileName);

    verify(sftpSession, times(1)).read(captor.capture(), eq(fileByteStream));
}

这是 getFileContent 方法:

@Override
    public byte[] getFileContent(String directory, String fileName) throws IOException {
        try (SftpSession session = sessionFactory.getSession()) {
            ByteArrayOutputStream fileByteStream = new ByteArrayOutputStream();
            session.read(directory + "/" + fileName, fileByteStream);
            return fileByteStream.toByteArray();
        }
    }

你可以这样做:

verify(sftpSession, times(1)).read(any(String.class), any(ByteArrayOutputStream.class));

verify(sftpSession, times(1)).read(argThat (arg -> arg.contains(directory) && arg.contains(fileName) ), argThat (arg -> arg != null));