模拟 Java InputStream

Please provide pointers to help me mock that java InputStream object. This is the line of code that I would wish to Mock:

InputStreamReader inputData = new InputStreamReader(System.in);
bufferdReader = new BufferedReader(inputData);
bufferdReader.readLine(); 

推荐答案

BufferedReader bufferedReader = org.mockito.Mockito.mock(BufferedReader.class);
when(bufferedReader.readLine())
  .thenReturn("first line")
  .thenReturn("second line");

org.junit.Assert.when(new Client(bufferedReader).parseLine())
  .thenEquals(IsEqual.equalTo("first line"));