@Test public void tokenizeEmptyString()
{

    final String str1 = "";
    final String str2 = "   \t   ";
    
    List<String> expectedTokens = Arrays.asList(new String[0]);
    
    ExecParameterTokenizer t = new ExecParameterTokenizer(str1);
    assertEquals("Wrong tokens", expectedTokens, t.getAllTokens());
    t = new ExecParameterTokenizer(str2);
    assertEquals("Wrong tokens", expectedTokens, t.getAllTokens());
}