Java 如何使用 EasyMock 和 PowerMock 模拟字节数组
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How to mock a byte array by using EasyMock and PowerMock
提问by Rekoolno
I tyied just like this:
我是这样绑的：
byte[] mockByteArray = PowerMock.createMockAndExpectNew(byte[].class, 10);
But I got runtime exception: An object method could not be found! How to fix it?
但是我得到了运行时异常：找不到对象方法！如何解决？
[Edit]
I want to mock a RandomAccessFile.read(byte[] buffer):
[编辑] 我想模拟一个RandomAccessFile.read(byte[] buffer)：
byte[] fileCutter(RandomAccessFile randomAccessFile, long position, int filePartSize) throws IOException{
byte[] buffer = new byte[filePartSize];
randomAccessFile.seek(position);
randomAccessFile.read(buffer);
return buffer;
}
回答by LaurentG
If you want to test the fileCuttermethod, you don't need to mock a bytearray. You have to mock RandomAccessFile. For instance, like this (sorry for small syntax errors, I can't check now):
如果要测试该fileCutter方法，则不需要模拟byte数组。你必须嘲笑RandomAccessFile。例如，像这样（对不起，小的语法错误，我现在无法检查）：
RandomAccessFile raf = EasyMock.createMock(RandomAccessFile.class);
// replace the byte array by what you expect
byte[] expectedRead = new byte[] { (byte) 129, (byte) 130, (byte) 131};
EasyMock.expect(raf.seek(EasyMock.anyInt()).once();
EasyMock.expect(raf.read(expectedRead)).once();
// If you don't care about the content of the byte array, you can do:
// EasyMock.expect(raf.read((byte[]) EasyMock.anyObject())).once();
myObjToTest.fileCutter(raf, ..., ...);
