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39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
"""Tests for the bundled T5-XXL tokenizer used by Anima.
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Anima feeds T5-XXL token IDs into the LLM Adapter's learned embedding table
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(nn.Embedding(32128, 1024)). The tokenizer is vendored in the package so users
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do not need to install a 9GB T5-XXL encoder just to obtain a ~2MB tokenizer.
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"""
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from invokeai.backend.anima.t5_tokenizer import ANIMA_T5_VOCAB_SIZE, load_bundled_t5_tokenizer
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def test_bundled_tokenizer_is_fast() -> None:
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tokenizer = load_bundled_t5_tokenizer()
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assert tokenizer.is_fast
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def test_bundled_tokenizer_known_ids() -> None:
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tokenizer = load_bundled_t5_tokenizer()
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ids = tokenizer("a cat sitting on a mat", truncation=True, max_length=512).input_ids
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assert ids == [3, 9, 1712, 3823, 30, 3, 9, 6928, 1]
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def test_bundled_tokenizer_appends_eos() -> None:
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tokenizer = load_bundled_t5_tokenizer()
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assert tokenizer("", truncation=True, max_length=512).input_ids == [1]
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def test_bundled_tokenizer_ids_within_adapter_embedding() -> None:
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tokenizer = load_bundled_t5_tokenizer()
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ids = tokenizer(
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"a very long and unusual prompt with rare tokens: zxqwv 12345",
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truncation=True,
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max_length=512,
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).input_ids
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assert all(0 <= i < ANIMA_T5_VOCAB_SIZE for i in ids)
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def test_bundled_tokenizer_is_cached() -> None:
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assert load_bundled_t5_tokenizer() is load_bundled_t5_tokenizer()
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