public void testRead3() throws Exception {
  byte[] data=new byte[]{-127,-100,-50,-10,-1,0,1,10,50,127};
  TestInputStream tis=new TestInputStream(data);
  CipherInputStream cis=new CipherInputStream(tis,new NullCipher());
  int expected=data.length;
  byte[] result=new byte[expected];
  int skip=2;
  int ind=skip;
  cis.read(null,0,skip);
  int got=skip + cis.read(result,0,1);
  while (true) {
    for (int j=0; j < got - ind; j++) {
      assertEquals("read(byte[] b, int off, int len) " + "returned incorrect data.",result[j],data[ind + j]);
    }
    if (got == expected) {
      break;
    }
 else     if (got > expected) {
      fail("The data returned by " + "read(byte[] b, int off, int len) " + "is larger than expected.");
    }
 else {
      ind=got;
      got+=cis.read(result,0,3);
    }
  }
  if (cis.read(result,0,1) != -1) {
    fail("read() should return -1 at the end of the stream.");
  }
}

public void testRead3 ( ) throws Exception { byte [ ] data = new byte [ ] { - 127 , - 100 , - 50 , - 10 , - 1 , 0 , 1 , 10 , 50 , 127 } ; TestInputStream tis = new TestInputStream ( data ) ; CipherInputStream cis = new CipherInputStream ( tis , new NullCipher ( ) ) ; int expected = data . length ; byte [ ] result = new byte [ expected ] ; int skip = 2 ; int ind = skip ; cis . read ( null , 0 , skip ) ; int got = skip + cis . read ( result , 0 , 1 ) ; while ( true ) { for ( int j = 0 ; j < got - ind ; j ++ ) { assertEquals ( "read(byte[] b, int off, int len) " + "returned incorrect data." , result [ j ] , data [ ind + j ] ) ; } if ( got == expected ) { break ; } else if ( got > expected ) { fail ( "The data returned by " + "read(byte[] b, int off, int len) " + "is larger than expected." ) ; } else { ind = got ; got += cis . read ( result , 0 , 3 ) ; } } if ( cis . read ( result , 0 , 1 ) != - 1 ) { fail ( "read() should return -1 at the end of the stream." ) ; } }
read ( byte [ ] b , int off , int len ) method testing . tests that method returns the correct value ( related to the inputstream ) , that it discards bytes in the case of null buffer , and that it returns - 1 at the end of stream .
