func assertReadLine(t *testing.T, reader lexer.LineReader, want string) {
got, err := reader.ReadLine()
if err != nil {
t.Errorf("got error %v", err)
return
}
if got != want {
t.Errorf("got %q, want %q", got, want)
}
}
func assertReadEOF(t *testing.T, reader lexer.LineReader) {
_, err := reader.ReadLine()
if err != io.EOF {
t.Errorf("got %v, want %v", err, io.EOF)
}
}
