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# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
from libcst.codemod import CodemodTest
from hypothesis.extra import codemods
def test_refactor_function_is_idempotent():
before = (
"from hypothesis.strategies import complex_numbers\n\n"
+ "complex_numbers(None)\n"
)
after = codemods.refactor(before)
assert before.replace("None", "min_magnitude=0") == after
assert codemods.refactor(after) == after
class TestFixComplexMinMagnitude(CodemodTest):
TRANSFORM = codemods.HypothesisFixComplexMinMagnitude
def test_noop(self) -> None:
before = """
from hypothesis.strategies import complex_numbers, complex_numbers as cn
complex_numbers(min_magnitude=1) # value OK
complex_numbers(max_magnitude=None) # different argument
class Foo:
def complex_numbers(self, **kw): pass
complex_numbers(min_magnitude=None) # defined in a different scope
"""
self.assertCodemod(before=before, after=before)
def test_substitution(self) -> None:
before = """
from hypothesis.strategies import complex_numbers, complex_numbers as cn
complex_numbers(min_magnitude=None) # simple call to fix
complex_numbers(min_magnitude=None, max_magnitude=1) # plus arg after
complex_numbers(allow_infinity=False, min_magnitude=None) # plus arg before
cn(min_magnitude=None) # imported as alias
"""
self.assertCodemod(before=before, after=before.replace("None", "0"))
class TestFixPositionalKeywonlyArgs(CodemodTest):
TRANSFORM = codemods.HypothesisFixPositionalKeywonlyArgs
def test_substitution(self) -> None:
before = """
import hypothesis.strategies as st
st.floats(0, 1, False, False, 32)
st.fractions(0, 1, 9)
"""
after = """
import hypothesis.strategies as st
st.floats(0, 1, allow_nan=False, allow_infinity=False, width=32)
st.fractions(0, 1, max_denominator=9)
"""
self.assertCodemod(before=before, after=after)
def test_noop_with_new_floats_kw(self) -> None:
before = """
import hypothesis.strategies as st
st.floats(0, 1, False, False, True, 32, False, False) # allow_subnormal=True
"""
self.assertCodemod(before=before, after=before)
def test_noop_if_unsure(self) -> None:
before = """
import random
if random.getrandbits(1):
from hypothesis import target
from hypothesis.strategies import lists as sets
def fractions(*args):
pass
else:
from hypothesis import target
from hypothesis.strategies import fractions, sets
fractions(0, 1, 9)
sets(None, 1)
target(0, 'label')
"""
after = before.replace("'label'", "label='label'")
self.assertCodemod(before=before, after=after)
def test_stateful_rule_noop(self):
# `rule()(lambda self: None)` is a call with a positional argument, and
# so we need an additional check that the "func" node is a Name rather than
# itself being a Call, lest we rewrite the outer instead of the inner.
# (this may be an upstream bug in metadata processing)
before = """
from hypothesis.stateful import RuleBasedStateMachine, rule
class MultipleRulesSameFuncMachine(RuleBasedStateMachine):
rule1 = rule()(lambda self: None)
"""
self.assertCodemod(before=before, after=before)
def test_kwargs_noop(self):
before = """
from hypothesis import target
kwargs = {"observation": 1, "label": "foobar"}
target(**kwargs)
"""
self.assertCodemod(before=before, after=before)
def test_noop_with_too_many_arguments_passed(self) -> None:
# If there are too many arguments, we should leave this alone to raise
# TypeError on older versions instead of deleting the additional args.
before = """
import hypothesis.strategies as st
st.sets(st.integers(), 0, 1, True)
"""
self.assertCodemod(before=before, after=before)
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