@Test
public void testMultiplex() {

    final Object[] src = new Object[4];
    final String[] expectedResults = new String[4];
    final String data = "abcdefghijklmnopqrstuvwxyz";
    for (int ix = 0; ix < 4; ix++) {
        final String val = data.substring(0, 5 + ix);
        src[ix] = new KeyObject(val);
        expectedResults[ix] = val;
    }
    final String [] results = cut.generateKeys(src);
    assertArrayEquals(expectedResults, results);
}