java - 如何模拟InputStream和ByteString

Question

我有一个这样的方法

private byte[] getInternalMDPayload(String metaDataDirString)
{

    byte[] data = new byte[16384];

    try
    {
        final InputStream internalMetadataInputStream = this.getClass().getClassLoader()
                .getResourceAsStream(metaDataDirString);        
        data = ByteStreams.toByteArray(internalMetadataInputStream);
        byteString = ByteString.copyFrom(data);

    } catch (IOException e)
    {
        dl.debug("Error occurred while loading the metadata file" + metaDataDirString);
    }
} 

有什么方法可以模拟这些对象吗？

目前我正在使用@Mocked Final Process mockProcess来模拟输入流无法找出如何模拟ByteString和byte[].

Answer 1

我会选择这个:

Mockito
    .when(ByteString.copyFrom(Mockito.<byte[]>any()))
    .thenReturn(ByteString.copyFromUtf8("byteString was mocked"));