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import os
import pickle
import subprocess
from functools import partial
from hashlib import md5
from pathlib import Path
from tempfile import gettempdir
from textwrap import dedent
from types import FunctionType
from unittest import TestCase
from unittest.mock import patch
import numpy as np
import pytest
from multiprocess import Pool
import datasets
from datasets.fingerprint import Hasher, fingerprint_transform
from datasets.table import InMemoryTable
from .utils import (
require_regex,
require_spacy,
require_spacy_model,
require_tiktoken,
require_torch,
require_transformers,
)
class Foo:
def __init__(self, foo):
self.foo = foo
def __call__(self):
return self.foo
class DatasetChild(datasets.Dataset):
@fingerprint_transform(inplace=False)
def func1(self, new_fingerprint, *args, **kwargs):
return DatasetChild(self.data, fingerprint=new_fingerprint)
@fingerprint_transform(inplace=False)
def func2(self, new_fingerprint, *args, **kwargs):
return DatasetChild(self.data, fingerprint=new_fingerprint)
class UnpicklableCallable:
def __init__(self, callable):
self.callable = callable
def __call__(self, *args, **kwargs):
if self.callable is not None:
return self.callable(*args, **kwargs)
def __getstate__(self):
raise pickle.PicklingError()
class TokenizersDumpTest(TestCase):
@require_transformers
@pytest.mark.integration
def test_hash_tokenizer(self):
from transformers import AutoTokenizer
def encode(x):
return tokenizer(x)
# TODO: add hash consistency tests across sessions
tokenizer = AutoTokenizer.from_pretrained("bert-base-uncased")
hash1 = md5(datasets.utils.py_utils.dumps(tokenizer)).hexdigest()
hash1_lambda = md5(datasets.utils.py_utils.dumps(lambda x: tokenizer(x))).hexdigest()
hash1_encode = md5(datasets.utils.py_utils.dumps(encode)).hexdigest()
tokenizer = AutoTokenizer.from_pretrained("bert-base-cased")
hash2 = md5(datasets.utils.py_utils.dumps(tokenizer)).hexdigest()
hash2_lambda = md5(datasets.utils.py_utils.dumps(lambda x: tokenizer(x))).hexdigest()
hash2_encode = md5(datasets.utils.py_utils.dumps(encode)).hexdigest()
tokenizer = AutoTokenizer.from_pretrained("bert-base-uncased")
hash3 = md5(datasets.utils.py_utils.dumps(tokenizer)).hexdigest()
hash3_lambda = md5(datasets.utils.py_utils.dumps(lambda x: tokenizer(x))).hexdigest()
hash3_encode = md5(datasets.utils.py_utils.dumps(encode)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
self.assertEqual(hash1_lambda, hash3_lambda)
self.assertNotEqual(hash1_lambda, hash2_lambda)
self.assertEqual(hash1_encode, hash3_encode)
self.assertNotEqual(hash1_encode, hash2_encode)
@require_transformers
@pytest.mark.integration
def test_hash_tokenizer_with_cache(self):
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("gpt2")
hash1 = md5(datasets.utils.py_utils.dumps(tokenizer)).hexdigest()
tokenizer("Hello world !") # call once to change the tokenizer's cache
hash2 = md5(datasets.utils.py_utils.dumps(tokenizer)).hexdigest()
self.assertEqual(hash1, hash2)
@require_regex
def test_hash_regex(self):
import regex
pat = regex.Regex("foo")
hash1 = md5(datasets.utils.py_utils.dumps(pat)).hexdigest()
pat = regex.Regex("bar")
hash2 = md5(datasets.utils.py_utils.dumps(pat)).hexdigest()
pat = regex.Regex("foo")
hash3 = md5(datasets.utils.py_utils.dumps(pat)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
class RecurseDumpTest(TestCase):
def test_recurse_dump_for_function(self):
def func():
return foo
foo = [0]
hash1 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
foo = [1]
hash2 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
foo = [0]
hash3 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
def test_dump_ignores_line_definition_of_function(self):
def func():
pass
hash1 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
def func():
pass
hash2 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
self.assertEqual(hash1, hash2)
def test_recurse_dump_for_class(self):
hash1 = md5(datasets.utils.py_utils.dumps(Foo([0]))).hexdigest()
hash2 = md5(datasets.utils.py_utils.dumps(Foo([1]))).hexdigest()
hash3 = md5(datasets.utils.py_utils.dumps(Foo([0]))).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
def test_recurse_dump_for_method(self):
hash1 = md5(datasets.utils.py_utils.dumps(Foo([0]).__call__)).hexdigest()
hash2 = md5(datasets.utils.py_utils.dumps(Foo([1]).__call__)).hexdigest()
hash3 = md5(datasets.utils.py_utils.dumps(Foo([0]).__call__)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
def test_dump_ipython_function(self):
def create_ipython_func(co_filename, returned_obj):
def func():
return returned_obj
code = func.__code__
# Use _create_code from dill in order to make it work for different python versions
code = code.replace(co_filename=co_filename)
return FunctionType(code, func.__globals__, func.__name__, func.__defaults__, func.__closure__)
co_filename, returned_obj = "<ipython-input-2-e0383a102aae>", [0]
hash1 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
co_filename, returned_obj = "<ipython-input-2-e0383a102aae>", [1]
hash2 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
co_filename, returned_obj = "<ipython-input-5-713f6613acf3>", [0]
hash3 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
co_filename, returned_obj = os.path.join(gettempdir(), "ipykernel_12345", "321456789.py"), [0]
hash4 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
co_filename, returned_obj = os.path.join(gettempdir(), "ipykernel_12345", "321456789.py"), [1]
hash5 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
co_filename, returned_obj = os.path.join(gettempdir(), "ipykernel_12345", "654123987.py"), [0]
hash6 = md5(datasets.utils.py_utils.dumps(create_ipython_func(co_filename, returned_obj))).hexdigest()
self.assertEqual(hash4, hash6)
self.assertNotEqual(hash4, hash5)
def test_recurse_dump_for_function_with_shuffled_globals(self):
foo, bar = [0], [1]
def func():
return foo, bar
func.__module__ = "__main__"
def globalvars_mock1_side_effect(func, *args, **kwargs):
return {"foo": foo, "bar": bar}
def globalvars_mock2_side_effect(func, *args, **kwargs):
return {"bar": bar, "foo": foo}
with patch("dill.detect.globalvars", side_effect=globalvars_mock1_side_effect) as globalvars_mock1:
hash1 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
self.assertGreater(globalvars_mock1.call_count, 0)
with patch("dill.detect.globalvars", side_effect=globalvars_mock2_side_effect) as globalvars_mock2:
hash2 = md5(datasets.utils.py_utils.dumps(func)).hexdigest()
self.assertGreater(globalvars_mock2.call_count, 0)
self.assertEqual(hash1, hash2)
class HashingTest(TestCase):
def test_hash_simple(self):
hash1 = Hasher.hash("hello")
hash2 = Hasher.hash("hello")
hash3 = Hasher.hash("there")
self.assertEqual(hash1, hash2)
self.assertNotEqual(hash1, hash3)
def test_hash_class_instance(self):
hash1 = Hasher.hash(Foo("hello"))
hash2 = Hasher.hash(Foo("hello"))
hash3 = Hasher.hash(Foo("there"))
self.assertEqual(hash1, hash2)
self.assertNotEqual(hash1, hash3)
def test_hash_update(self):
hasher = Hasher()
for x in ["hello", Foo("hello")]:
hasher.update(x)
hash1 = hasher.hexdigest()
hasher = Hasher()
for x in ["hello", Foo("hello")]:
hasher.update(x)
hash2 = hasher.hexdigest()
hasher = Hasher()
for x in ["there", Foo("there")]:
hasher.update(x)
hash3 = hasher.hexdigest()
self.assertEqual(hash1, hash2)
self.assertNotEqual(hash1, hash3)
def test_hash_unpicklable(self):
with self.assertRaises(pickle.PicklingError):
Hasher.hash(UnpicklableCallable(Foo("hello")))
def test_hash_same_strings(self):
string = "abc"
obj1 = [string, string] # two strings have the same ids
obj2 = [string, string]
obj3 = json.loads(f'["{string}", "{string}"]') # two strings have different ids
self.assertIs(obj1[0], string)
self.assertIs(obj1[0], obj1[1])
self.assertIs(obj2[0], string)
self.assertIs(obj2[0], obj2[1])
self.assertIsNot(obj3[0], string)
self.assertIsNot(obj3[0], obj3[1])
hash1 = Hasher.hash(obj1)
hash2 = Hasher.hash(obj2)
hash3 = Hasher.hash(obj3)
self.assertEqual(hash1, hash2)
self.assertEqual(hash1, hash3)
def test_set_stable(self):
rng = np.random.default_rng(42)
set_ = {rng.random() for _ in range(10_000)}
expected_hash = Hasher.hash(set_)
assert expected_hash == Pool(1).apply_async(partial(Hasher.hash, set(set_))).get()
def test_set_doesnt_depend_on_order(self):
set_ = set("abc")
hash1 = md5(datasets.utils.py_utils.dumps(set_)).hexdigest()
set_ = set("def")
hash2 = md5(datasets.utils.py_utils.dumps(set_)).hexdigest()
set_ = set("cba")
hash3 = md5(datasets.utils.py_utils.dumps(set_)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
@require_tiktoken
def test_hash_tiktoken_encoding(self):
import tiktoken
enc = tiktoken.get_encoding("gpt2")
hash1 = md5(datasets.utils.py_utils.dumps(enc)).hexdigest()
enc = tiktoken.get_encoding("r50k_base")
hash2 = md5(datasets.utils.py_utils.dumps(enc)).hexdigest()
enc = tiktoken.get_encoding("gpt2")
hash3 = md5(datasets.utils.py_utils.dumps(enc)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
@require_torch
def test_hash_torch_tensor(self):
import torch
t = torch.tensor([1.0])
hash1 = md5(datasets.utils.py_utils.dumps(t)).hexdigest()
t = torch.tensor([2.0])
hash2 = md5(datasets.utils.py_utils.dumps(t)).hexdigest()
t = torch.tensor([1.0])
hash3 = md5(datasets.utils.py_utils.dumps(t)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
@require_spacy
@require_spacy_model("en_core_web_sm")
@require_spacy_model("fr_core_news_sm")
@pytest.mark.integration
def test_hash_spacy_model(self):
import spacy
nlp = spacy.load("en_core_web_sm")
hash1 = md5(datasets.utils.py_utils.dumps(nlp)).hexdigest()
nlp = spacy.load("fr_core_news_sm")
hash2 = md5(datasets.utils.py_utils.dumps(nlp)).hexdigest()
nlp = spacy.load("en_core_web_sm")
hash3 = md5(datasets.utils.py_utils.dumps(nlp)).hexdigest()
self.assertEqual(hash1, hash3)
self.assertNotEqual(hash1, hash2)
@pytest.mark.integration
def test_move_script_doesnt_change_hash(tmp_path: Path):
dir1 = tmp_path / "dir1"
dir2 = tmp_path / "dir2"
dir1.mkdir()
dir2.mkdir()
script_filename = "script.py"
code = dedent(
"""
from datasets.fingerprint import Hasher
def foo():
pass
print(Hasher.hash(foo))
"""
)
script_path1 = dir1 / script_filename
script_path2 = dir2 / script_filename
with script_path1.open("w") as f:
f.write(code)
with script_path2.open("w") as f:
f.write(code)
fingerprint1 = subprocess.check_output(["python", str(script_path1)])
fingerprint2 = subprocess.check_output(["python", str(script_path2)])
assert fingerprint1 == fingerprint2
def test_fingerprint_in_multiprocessing():
data = {"a": [0, 1, 2]}
dataset = DatasetChild(InMemoryTable.from_pydict(data))
expected_fingerprint = dataset.func1()._fingerprint
assert expected_fingerprint == dataset.func1()._fingerprint
assert expected_fingerprint != dataset.func2()._fingerprint
with Pool(2) as p:
assert expected_fingerprint == p.apply_async(dataset.func1).get()._fingerprint
assert expected_fingerprint != p.apply_async(dataset.func2).get()._fingerprint
def test_fingerprint_when_transform_version_changes():
data = {"a": [0, 1, 2]}
class DummyDatasetChild(datasets.Dataset):
@fingerprint_transform(inplace=False)
def func(self, new_fingerprint):
return DummyDatasetChild(self.data, fingerprint=new_fingerprint)
fingeprint_no_version = DummyDatasetChild(InMemoryTable.from_pydict(data)).func()
class DummyDatasetChild(datasets.Dataset):
@fingerprint_transform(inplace=False, version="1.0.0")
def func(self, new_fingerprint):
return DummyDatasetChild(self.data, fingerprint=new_fingerprint)
fingeprint_1 = DummyDatasetChild(InMemoryTable.from_pydict(data)).func()
class DummyDatasetChild(datasets.Dataset):
@fingerprint_transform(inplace=False, version="2.0.0")
def func(self, new_fingerprint):
return DummyDatasetChild(self.data, fingerprint=new_fingerprint)
fingeprint_2 = DummyDatasetChild(InMemoryTable.from_pydict(data)).func()
assert len({fingeprint_no_version, fingeprint_1, fingeprint_2}) == 3
def test_dependency_on_dill():
# AttributeError: module 'dill._dill' has no attribute 'stack'
hasher = Hasher()
hasher.update(lambda x: x)
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