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import ast
import random
import sys
from pysource_minimize import minimize
from inline_snapshot import UsageError
from inline_snapshot.testing import Example
header = """
from dataclasses import dataclass
@dataclass
class A:
a:int
b:int=5
c:int=5
def f(v):
return v
"""
def chose(l):
return random.choice(l)
def gen_new_value(values):
kind = chose(["dataclass", "dict", "tuple", "list", "f"])
if kind == "dataclass":
data_type = chose(["A"])
num_args = chose(range(1, 3))
num_pos_args = chose(range(num_args))
assert num_pos_args <= num_args
args_names = ["a", "b", "c"]
random.shuffle(args_names)
args = [
*[chose(values) for _ in range(num_pos_args)],
*[
f"{args_names.pop()}={chose(values)}"
for _ in range(num_args - num_pos_args)
],
]
return f"{data_type}({', '.join(args)})"
if kind == "tuple":
return "(" + ", ".join(chose(values) for _ in range(3)) + ")"
if kind == "list":
return "[" + ", ".join(chose(values) for _ in range(3)) + "]"
if kind == "dict":
return (
"[" + ", ".join(f"{chose(values)}:{chose(values)}" for _ in range(3)) + "]"
)
if kind == "f":
return f"f({chose(values)})"
context = dict()
exec(header, context, context)
def is_valid_value(v):
try:
eval(v, context, {})
except:
return False
return True
def value_of(v):
return eval(v, context, {})
def gen_values():
values = [
"1",
"'abc'",
"True",
"list()",
"dict()",
"set()",
"tuple()",
"[]",
"{}",
"()",
"{*()}",
]
while len(values) <= 500:
new_value = gen_new_value([v for v in values if len(v) < 50])
if is_valid_value(new_value):
values.append(new_value)
return values
def fmt(code):
return ast.unparse(ast.parse(code))
class Store:
def __eq__(self, other):
self.value = other
return True
def gen_test(values):
va = chose(values)
vb = chose(values)
test = f"""
from inline_snapshot import snapshot
{header}
def test_a():
assert {va} == snapshot({vb})
assert {vb} == snapshot({va})
def test_b():
for _ in [1,2,3]:
assert {va} == snapshot({vb})
assert {vb} == snapshot({va})
def test_c():
snapshot({vb})
snapshot({va})
"""
test = fmt(test)
if value_of(va) == value_of(vb):
return
def contains_bug(code):
try:
Example({"test.py": code}).run_inline(["--inline-snapshot=fix"])
except UsageError:
return False
except KeyboardInterrupt:
raise
except AssertionError:
return True
except:
return True
return False
if not contains_bug(test):
return
test = minimize(test, checker=contains_bug)
print("minimal code:")
print("=" * 20)
print(test)
sys.exit()
if __name__ == "__main__":
values = gen_values()
for i in range(100000):
gen_test(values)
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