test_tokenization_blenderbot.py
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	#!/usr/bin/env python3
	# coding=utf-8
	# Copyright 2020 The HuggingFace Team. All rights reserved.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	"""Tests for Blenderbot Tokenizers, including common tests for BlenderbotSmallTokenizer."""
	import unittest

	from transformers.file_utils import cached_property
	from transformers.models.blenderbot.tokenization_blenderbot import BlenderbotTokenizer


	class Blenderbot3BTokenizerTests(unittest.TestCase):
	@cached_property
	def tokenizer_3b(self):
	return BlenderbotTokenizer.from_pretrained("facebook/blenderbot-3B")

	def test_encode_decode_cycle(self):
	tok = self.tokenizer_3b
	src_text = " I am a small frog."
	encoded = tok([src_text], padding=False, truncation=False)["input_ids"]
	decoded = tok.batch_decode(encoded, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
	assert src_text == decoded

	def test_3B_tokenization_same_as_parlai(self):
	assert self.tokenizer_3b.add_prefix_space
	assert self.tokenizer_3b([" Sam", "Sam"]).input_ids == [[5502, 2], [5502, 2]]