testEncodes(base64().withSeparator("\n", 3), "foobar", "Zm9\nvYm\nFy");
    testEncodes(base64().withSeparator("$", 4), "foobar", "Zm9v$YmFy");
    testEncodes(base32().withSeparator("*", 4), "foobar", "MZXW*6YTB*OI==*====");
  }

  public void testSeparatorSameAsPadChar() {
    try {
      base64().withSeparator("=", 3);
      fail("Expected IllegalArgumentException");
    } catch (IllegalArgumentException expected) {

		// Normal case, this is valid input
		{"fooba", [][]string{
			{"MZXW6YTB"},
			{"MZXW6YT", "B"},
			{"MZXW6Y", "TB"},
			{"MZXW6", "YTB"},
			{"MZXW6", "YT", "B"},
			{"MZXW", "6YTB"},
			{"MZXW", "6Y", "TB"},
		}, nil},
	}

	for _, testcase := range testcases {
		for _, chunks := range testcase.chunkCombinations {
			pr, pw := io.Pipe()