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e4b94d8e58
* Copy code from Bert to Roberta and add safeguard script * Fix docstring * Comment code * Formatting * Update src/transformers/modeling_roberta.py Co-authored-by: Lysandre Debut <lysandre@huggingface.co> * Add test and fix bugs * Fix style and make new comand Co-authored-by: Lysandre Debut <lysandre@huggingface.co>
105 lines
4.0 KiB
Python
105 lines
4.0 KiB
Python
import os
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import re
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import shutil
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import sys
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import tempfile
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import unittest
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git_repo_path = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
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sys.path.append(os.path.join(git_repo_path, "utils"))
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import check_copies # noqa: E402
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# This is the reference code that will be used in the tests.
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# If BertLMPredictionHead is changed in modeling_bert.py, this code needs to be manually updated.
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REFERENCE_CODE = """ def __init__(self, config):
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super().__init__()
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self.transform = BertPredictionHeadTransform(config)
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# The output weights are the same as the input embeddings, but there is
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# an output-only bias for each token.
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self.decoder = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
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self.bias = nn.Parameter(torch.zeros(config.vocab_size))
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# Need a link between the two variables so that the bias is correctly resized with `resize_token_embeddings`
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self.decoder.bias = self.bias
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def forward(self, hidden_states):
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hidden_states = self.transform(hidden_states)
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hidden_states = self.decoder(hidden_states)
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return hidden_states
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"""
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class CopyCheckTester(unittest.TestCase):
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def setUp(self):
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self.transformer_dir = tempfile.mkdtemp()
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check_copies.TRANSFORMER_PATH = self.transformer_dir
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shutil.copy(
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os.path.join(git_repo_path, "src/transformers/modeling_bert.py"),
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os.path.join(self.transformer_dir, "modeling_bert.py"),
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)
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def tearDown(self):
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check_copies.TRANSFORMER_PATH = "src/transformers"
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shutil.rmtree(self.transformer_dir)
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def check_copy_consistency(self, comment, class_name, class_code, overwrite_result=None):
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code = comment + f"\nclass {class_name}(nn.Module):\n" + class_code
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if overwrite_result is not None:
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expected = comment + f"\nclass {class_name}(nn.Module):\n" + overwrite_result
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fname = os.path.join(self.transformer_dir, "new_code.py")
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with open(fname, "w") as f:
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f.write(code)
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if overwrite_result is None:
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self.assertTrue(check_copies.is_copy_consistent(fname))
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else:
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check_copies.is_copy_consistent(f.name, overwrite=True)
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with open(fname, "r") as f:
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self.assertTrue(f.read(), expected)
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def test_find_code_in_transformers(self):
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code = check_copies.find_code_in_transformers("modeling_bert.BertLMPredictionHead")
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self.assertEqual(code, REFERENCE_CODE)
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def test_is_copy_consistent(self):
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# Base copy consistency
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self.check_copy_consistency(
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"# Copied from transformers.modeling_bert.BertLMPredictionHead",
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"BertLMPredictionHead",
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REFERENCE_CODE + "\n",
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)
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# With no empty line at the end
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self.check_copy_consistency(
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"# Copied from transformers.modeling_bert.BertLMPredictionHead",
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"BertLMPredictionHead",
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REFERENCE_CODE,
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)
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# Copy consistency with rename
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self.check_copy_consistency(
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"# Copied from transformers.modeling_bert.BertLMPredictionHead with Bert->TestModel",
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"TestModelLMPredictionHead",
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re.sub("Bert", "TestModel", REFERENCE_CODE),
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)
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# Copy consistency with a really long name
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long_class_name = "TestModelWithAReallyLongNameBecauseSomePeopleLikeThatForSomeReasonIReallyDontUnderstand"
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self.check_copy_consistency(
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f"# Copied from transformers.modeling_bert.BertLMPredictionHead with Bert->{long_class_name}",
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f"{long_class_name}LMPredictionHead",
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re.sub("Bert", long_class_name, REFERENCE_CODE),
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)
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# Copy consistency with overwrite
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self.check_copy_consistency(
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"# Copied from transformers.modeling_bert.BertLMPredictionHead with Bert->TestModel",
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"TestModelLMPredictionHead",
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REFERENCE_CODE,
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overwrite_result=re.sub("Bert", "TestModel", REFERENCE_CODE),
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)
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