Java 模拟 FTP session

Question

我有一个处理 ftp 服务器的应用程序，现在我想写一些测试，但一开始我遇到了麻烦，我试图模拟 session 工厂但它抛出异常并且无法理解为什么，这是我的代码:

@Mock
SessionFactory<FTPFile> sessionFactory;


@Before
public void initMocks() {
    MockitoAnnotations.initMocks(this);
    DefaultFtpSessionFactory sf = new DefaultFtpSessionFactory();
    sf.setHost(host);
    sf.setPort(port);
    sf.setUsername(username);
    sf.setPassword(password);
    Mockito.when(sessionFactory.getSession()).thenReturn((Session<FTPFile>) new CachingSessionFactory<FTPFile>(sf));
}

这是我遇到的异常:

java.lang.IllegalArgumentException: [Assertion failed] - this String argument must have text; it must not be null, empty, or blank
    at org.springframework.util.Assert.hasText(Assert.java:168)
    at org.springframework.util.Assert.hasText(Assert.java:181)
    at org.springframework.integration.ftp.session.AbstractFtpSessionFactory.setHost(AbstractFtpSessionFactory.java:101)
    at com.melita.maltapay.schedule._ScheduledTasks.initMocks(_ScheduledTasks.java:48)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

有人能告诉我哪里做错了吗？ :/

Answer 1

如果您想测试您的 FtpClient，您可以使用 MockFtpServer在测试中配置和使用非常简单。

The MockFtpServer project provides mock/dummy FTP server implementations that can be very useful for testing of FTP client code. Two FTP Server implementations are provided, each at a different level of abstraction.