方法实例化与类级别实例化的Junit测试

Question

代码发布在链接

现在，当我试图写junit为第一种情况，我得到错误

"需要重放B类".

，但同样的junit也适用于第二种情况。

my junit is

@RunWith(PowerMockRunner.class)
public class TestClass {
    @Test
    public void testDoSomeThing() {
        B b = createMock(B.class)
        expectNew(b.CallMe()).andReturns(xxx)
        A a=new A();
        replayAll();
        a.doSomething();
        verifyAll();
    }
}

Answer 1

下面是使用EasyMock和PowerMock的解决方案:

TestClass.java

import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.easymock.PowerMock;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
@RunWith(PowerMockRunner.class)
@PrepareForTest({ A.class, B.class })
public class TestClass {
    @Test
    public void testDoSomeThing() throws Exception {
        /* Setup */
        B bMock = PowerMock.createMock(B.class);
        /* Mocks */
        PowerMock.expectNew(B.class).andReturn(bMock).atLeastOnce();
        bMock.callMe();
        /* Activate */
        PowerMock.replayAll();
        /* Test */
        A cut = new A();
        cut.doSomething();
        /* Asserts */
        PowerMock.verifyAll();
    }
}

A.java

public class A {
    B b = new B();
    public void doSomething() {
        b.callMe();
    }
}

B.java

public class B {
    public void callMe() {
    }
}

Answer 2

你忘了添加

@PrepareForTest({A.class, B.class})

该注释必须包含您正在模拟的类和将使用这些模拟的类。