测试重定向向前的void方法 [英] Test a void method that redirect foward

问题描述

如何测试使用RequestDispatcher重定向我的void方法?

How can I test a void method that redirects me with RequestDispatcher?

我到目前为止所做的.

public void testAuthAction_userNull() {
    HttpServletRequest requestMock = createMock(HttpServletRequest.class);
    HttpServletResponse responseMock = createMock(HttpServletResponse.class);
    expect(requestMock.getSession().getAttribute("user")).andReturn(null);
    replay(requestMock);

    AuthAction action = new AuthAction();
    RequestDispatcher rd = requestMock.getRequestDispatcher("/User/login.jsp");
}

我要测试的方法是

public void execute(HttpServletRequest request, HttpServletResponse response) {
    User user = (User) request.getSession().getAttribute("User");
    try {
        if(user == null) {
            RequestDispatcher rd = request.getRequestDispatcher("/User/login.jsp");
            if(rd != null)
                rd.foward(request, response);
        } else {/* */}
    }
    catch(Exception e){/* */}
}

我正在使用JUnit和EasyMock.

I'm using JUnit and EasyMock.

推荐答案

您需要创建一个预期将被转发的RequestDispatcher的模拟，并从该模拟中将其返回:

You need to create a mock of RequestDispatcher expecting to be forwarded, and return it from your mock:

RequestDispatcher dispatcherMock = createMock(RequestDispatcher.class);
expect(requestMock.getRequestDispatcher("/User/login.jsp"))
    .andReturn(dispatcherMock);
// Expect to be forwarded.
dispatcherMock.forward(requestMock, responseMock);
EasyMock.expectLastCall().once();
replay(dispatcherMock);
replay(requestMock);

// Run your test on whatever instance has `execute`:
someInstance.execute(requestMock, responseMock);

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