public void testSkipUntilNonExistentMarkerShouldReturnEOF() throws IOException {
final LexerSource src = newSource("abcd\n1234");
assertEquals(RubyLexer.EOF, src.skipUntil('z'));
}
public void testSkipUntilShouldSkipPastNonMatchingChars() throws IOException {
LexerSource src = newSource("abcd1234");
src.skipUntil('1');
assertReadShouldProduce(src, "234");
}