mod test_utils;
use rust_tokenizers::tokenizer::{
AlbertTokenizer, MultiThreadedTokenizer, Tokenizer, TruncationStrategy,
};
use rust_tokenizers::{Offset, TokenizedInput};
use test_utils::download_file_to_cache;
#[test]
fn test_albert_tokenization() -> anyhow::Result<()> {
let vocab_path = download_file_to_cache(
"https://s3.amazonaws.com/models.huggingface.co/bert/albert-base-v2-spiece.model",
)?;
let albert_tokenizer = AlbertTokenizer::from_file(vocab_path, true, true)?;
let original_strings = [
"…",
"This is a sample sentence to be tokénized",
"Wondering how this will get tokenized 🤔 ?",
"İs th!s 𩸽 Ϻ Šœ Ugljšić dấu nặng",
" İs th!s 𩸽 Ϻ Šœ Ugljšić dấu nặng ",
" � İs th!s �� 𩸽 Ϻ Šœ Ugljšić dấu nặng ",
];
let expected_results = [
TokenizedInput {
token_ids: vec![2, 13, 9, 9, 9, 3],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 1 }),
Some(Offset { begin: 0, end: 1 }),
Some(Offset { begin: 0, end: 1 }),
Some(Offset { begin: 0, end: 1 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
TokenizedInput {
token_ids: vec![2, 48, 25, 21, 5717, 5123, 20, 44, 20, 2853, 1333, 3],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 4 }),
Some(Offset { begin: 4, end: 7 }),
Some(Offset { begin: 7, end: 9 }),
Some(Offset { begin: 9, end: 16 }),
Some(Offset { begin: 16, end: 25 }),
Some(Offset { begin: 25, end: 28 }),
Some(Offset { begin: 28, end: 31 }),
Some(Offset { begin: 31, end: 34 }),
Some(Offset { begin: 34, end: 38 }),
Some(Offset { begin: 38, end: 42 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
TokenizedInput {
token_ids: vec![2, 5712, 184, 48, 129, 164, 20, 2853, 1333, 13, 1, 13, 60, 3],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 9 }),
Some(Offset { begin: 9, end: 13 }),
Some(Offset { begin: 13, end: 18 }),
Some(Offset { begin: 18, end: 23 }),
Some(Offset { begin: 23, end: 27 }),
Some(Offset { begin: 27, end: 30 }),
Some(Offset { begin: 30, end: 33 }),
Some(Offset { begin: 33, end: 37 }),
Some(Offset { begin: 37, end: 38 }),
Some(Offset { begin: 38, end: 39 }),
Some(Offset { begin: 39, end: 40 }),
Some(Offset { begin: 40, end: 41 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
TokenizedInput {
token_ids: vec![
2, 25, 13, 96, 187, 18, 13, 1, 13, 1, 13, 18, 1, 13, 5127, 15664, 7820, 18758, 13,
103, 1712, 3,
],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 2 }),
Some(Offset { begin: 2, end: 3 }),
Some(Offset { begin: 3, end: 5 }),
Some(Offset { begin: 5, end: 6 }),
Some(Offset { begin: 6, end: 7 }),
Some(Offset { begin: 7, end: 8 }),
Some(Offset { begin: 8, end: 9 }),
Some(Offset { begin: 9, end: 10 }),
Some(Offset { begin: 10, end: 11 }),
Some(Offset { begin: 11, end: 12 }),
Some(Offset { begin: 12, end: 13 }),
Some(Offset { begin: 13, end: 14 }),
Some(Offset { begin: 14, end: 15 }),
Some(Offset { begin: 15, end: 17 }),
Some(Offset { begin: 17, end: 19 }),
Some(Offset { begin: 19, end: 22 }),
Some(Offset { begin: 22, end: 26 }),
Some(Offset { begin: 26, end: 27 }),
Some(Offset { begin: 27, end: 28 }),
Some(Offset { begin: 28, end: 31 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
TokenizedInput {
token_ids: vec![
2, 13, 13, 25, 13, 96, 187, 18, 13, 13, 13, 13, 1, 13, 1, 13, 18, 1, 13, 13, 13,
5127, 15664, 7820, 13, 18758, 13, 103, 1712, 13, 13, 13, 13, 13, 3,
],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 1 }),
Some(Offset { begin: 1, end: 2 }),
Some(Offset { begin: 2, end: 5 }),
Some(Offset { begin: 5, end: 6 }),
Some(Offset { begin: 6, end: 8 }),
Some(Offset { begin: 8, end: 9 }),
Some(Offset { begin: 9, end: 10 }),
Some(Offset { begin: 10, end: 11 }),
Some(Offset { begin: 11, end: 12 }),
Some(Offset { begin: 12, end: 13 }),
Some(Offset { begin: 13, end: 14 }),
Some(Offset { begin: 14, end: 15 }),
Some(Offset { begin: 15, end: 16 }),
Some(Offset { begin: 16, end: 17 }),
Some(Offset { begin: 17, end: 18 }),
Some(Offset { begin: 18, end: 19 }),
Some(Offset { begin: 19, end: 20 }),
Some(Offset { begin: 20, end: 21 }),
Some(Offset { begin: 21, end: 22 }),
Some(Offset { begin: 22, end: 23 }),
Some(Offset { begin: 23, end: 25 }),
Some(Offset { begin: 25, end: 27 }),
Some(Offset { begin: 27, end: 30 }),
Some(Offset { begin: 30, end: 31 }),
Some(Offset { begin: 31, end: 35 }),
Some(Offset { begin: 35, end: 36 }),
Some(Offset { begin: 36, end: 37 }),
Some(Offset { begin: 37, end: 40 }),
Some(Offset { begin: 40, end: 41 }),
Some(Offset { begin: 41, end: 42 }),
Some(Offset { begin: 42, end: 43 }),
Some(Offset { begin: 43, end: 44 }),
Some(Offset { begin: 44, end: 45 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
TokenizedInput {
token_ids: vec![
2, 13, 25, 13, 96, 187, 18, 13, 13, 1, 13, 1, 13, 18, 1, 13, 13, 13, 5127, 15664,
7820, 13, 18758, 13, 103, 1712, 13, 13, 13, 13, 13, 3,
],
segment_ids: vec![],
special_tokens_mask: vec![],
overflowing_tokens: vec![],
num_truncated_tokens: 0,
token_offsets: vec![
None,
Some(Offset { begin: 0, end: 1 }),
Some(Offset { begin: 2, end: 5 }),
Some(Offset { begin: 5, end: 6 }),
Some(Offset { begin: 6, end: 8 }),
Some(Offset { begin: 8, end: 9 }),
Some(Offset { begin: 9, end: 10 }),
Some(Offset { begin: 10, end: 11 }),
Some(Offset { begin: 13, end: 14 }),
Some(Offset { begin: 14, end: 15 }),
Some(Offset { begin: 15, end: 16 }),
Some(Offset { begin: 16, end: 17 }),
Some(Offset { begin: 17, end: 18 }),
Some(Offset { begin: 18, end: 19 }),
Some(Offset { begin: 19, end: 20 }),
Some(Offset { begin: 20, end: 21 }),
Some(Offset { begin: 21, end: 22 }),
Some(Offset { begin: 22, end: 23 }),
Some(Offset { begin: 23, end: 25 }),
Some(Offset { begin: 25, end: 27 }),
Some(Offset { begin: 27, end: 30 }),
Some(Offset { begin: 30, end: 31 }),
Some(Offset { begin: 31, end: 35 }),
Some(Offset { begin: 35, end: 36 }),
Some(Offset { begin: 36, end: 37 }),
Some(Offset { begin: 37, end: 40 }),
Some(Offset { begin: 40, end: 41 }),
Some(Offset { begin: 41, end: 42 }),
Some(Offset { begin: 42, end: 43 }),
Some(Offset { begin: 43, end: 44 }),
Some(Offset { begin: 44, end: 45 }),
None,
],
reference_offsets: vec![],
mask: vec![],
},
]
.to_vec();
let output = MultiThreadedTokenizer::encode_list(
&albert_tokenizer,
&original_strings,
128,
&TruncationStrategy::LongestFirst,
0,
);
for (_idx, (predicted, expected)) in output.iter().zip(expected_results.iter()).enumerate() {
let original_sentence_chars: Vec<char> = original_strings[_idx].chars().collect();
for (idx, offset) in predicted.token_offsets.iter().enumerate() {
match offset {
Some(offset) => {
let (start_char, end_char) = (offset.begin as usize, offset.end as usize);
let text: String = original_sentence_chars[start_char..end_char]
.iter()
.collect();
println!(
"{:<2?} | {:<10} | {:<10} | {:<10?}",
offset,
text,
albert_tokenizer.decode(&[predicted.token_ids[idx]], false, false),
predicted.mask[idx]
)
}
None => continue,
}
}
assert_eq!(predicted.token_ids, expected.token_ids);
assert_eq!(predicted.token_offsets, expected.token_offsets);
}
Ok(())
}