testStreamingEncodingWithSeparators(base64(), "fooba", "Zm9vYmE=");
    testStreamingEncodingWithSeparators(base64(), "foobar", "Zm9vYmFy");
  }

  public void testBase64LenientPadding() {
    testDecodes(base64(), "Zg", "f");
    testDecodes(base64(), "Zg=", "f");
    testDecodes(base64(), "Zg==", "f"); // proper padding length
    testDecodes(base64(), "Zg===", "f");