PowerMockito模拟单个静态方法并在另一个静态方法中返回对象 [英] PowerMockito mock single static method and return object inside another static method

问题描述

我已经编写了一些测试案例，以使用PowerMockito的mockStatic功能来模拟静态类和方法.但是我正在努力在另一个静态方法中模拟一个静态方法.我确实看到了几个例子，包括 ，但实际上都没有帮助我还是我不了解实际功能? (我一无所知)

I have written test cases to mock static classes and methods using PowerMockito's mockStatic feature. But I am strugling to mock one static method inside another static method. I did see few examples including this but none of them actually helping me or I am not understanding the actual functionality? (I'm clueless)

例如.我有一个下面的类，完整的代码是

Eg. I have a class as below and complete code is here.

public static byte[] encrypt(File file, byte[] publicKey, boolean verify) throws Exception {
        //some logic here
        PGPPublicKey encryptionKey = OpenPgpUtility.readPublicKey(new ByteArrayInputStream(publicKey));
        //some other logic here
}

public/private static PGPPublicKey readPublicKey(InputStream in) throws IOException, PGPException {
 //Impl of this method is here
}

我的测试用例是:

@Test
    public void testEncrypt() throws Exception {
        File mockFile = Mockito.mock(File.class);
        byte[] publicKey = { 'Z', 'G', 'V', 'j', 'b', '2', 'R', 'l', 'Z', 'F', 'B', 'L', 'Z', 'X', 'k', '=' };
        boolean flag = false;

        PGPPublicKey mockPGPPublicKey = Mockito.mock(PGPPublicKey.class);
        InputStream mockInputStream = Mockito.mock(InputStream.class);

        PowerMockito.mockStatic(OpenPgpUtility.class);

        PowerMockito.when(OpenPgpUtility.readPublicKey(mockInputStream)).thenReturn(mockPGPPublicKey);

        System.out.println("Hashcode for PGPPublicKey: " + OpenPgpUtility.readPublicKey(mockInputStream));
        System.out.println("Hashcode for Encrypt: " + OpenPgpUtility.encrypt(mockFile, publicKey, flag));
    }

当我调用OpenPgpUtility.encrypt(mockFile, publicKey, flag)时，实际上未调用此方法. 如何在侧面encrypt(...)中模拟readPublicKey(...)方法的结果?

When I call OpenPgpUtility.encrypt(mockFile, publicKey, flag) this method is not actually getting called. How Can I mock the result of readPublicKey(...) method in side encrypt(...)?

推荐答案

我在某人的在我的情况下，我使用了PowerMockito的部分模拟，如下所示.

In my case, I have used same partial mock of PowerMockito as below.

PowerMockito.stub(PowerMockito.method(OpenPgpUtility.class, "readPublicKey", InputStream.class)).toReturn(mockPGPPublicKey);

这让我可以模拟readPublicKey()，但实际上是对encrypt()

which letting me to mock readPublicKey() but an actual call to encrypt()

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