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|
import pytest
from RestrictedPython import compile_restricted_exec
from RestrictedPython._compat import IS_PY311_OR_GREATER
from tests.helper import restricted_exec
TRY_EXCEPT = """
def try_except(m):
try:
m('try')
raise IndentationError('f1')
except IndentationError as error:
m('except')
"""
def test_RestrictingNodeTransformer__visit_Try__1(
mocker):
"""It allows try-except statements."""
trace = mocker.stub()
restricted_exec(TRY_EXCEPT)['try_except'](trace)
trace.assert_has_calls([
mocker.call('try'),
mocker.call('except')
])
TRY_EXCEPT_ELSE = """
def try_except_else(m):
try:
m('try')
except:
m('except')
else:
m('else')
"""
def test_RestrictingNodeTransformer__visit_Try__2(
mocker):
"""It allows try-except-else statements."""
trace = mocker.stub()
restricted_exec(TRY_EXCEPT_ELSE)['try_except_else'](trace)
trace.assert_has_calls([
mocker.call('try'),
mocker.call('else')
])
TRY_EXCEPT_STAR = """
def try_except_star(m):
try:
m('try')
raise ExceptionGroup("group", [IndentationError('f1'), ValueError(65)])
except* IndentationError:
m('IndentationError')
except* ValueError:
m('ValueError')
except* RuntimeError:
m('RuntimeError')
"""
@pytest.mark.skipif(
not IS_PY311_OR_GREATER,
reason="ExceptionGroup class was added in Python 3.11.",
)
def test_RestrictingNodeTransformer__visit_TryStar__1():
"""It denies try-except* PEP 654 statements."""
result = compile_restricted_exec(TRY_EXCEPT_STAR)
assert result.errors == (
'Line 3: TryStar statements are not allowed.',
)
assert result.code is None
TRY_FINALLY = """
def try_finally(m):
try:
m('try')
1 / 0
finally:
m('finally')
return
"""
def test_RestrictingNodeTransformer__visit_TryFinally__1(
mocker):
"""It allows try-finally statements."""
trace = mocker.stub()
restricted_exec(TRY_FINALLY)['try_finally'](trace)
trace.assert_has_calls([
mocker.call('try'),
mocker.call('finally')
])
TRY_EXCEPT_FINALLY = """
def try_except_finally(m):
try:
m('try')
1 / 0
except:
m('except')
finally:
m('finally')
"""
def test_RestrictingNodeTransformer__visit_TryFinally__2(
mocker):
"""It allows try-except-finally statements."""
trace = mocker.stub()
restricted_exec(TRY_EXCEPT_FINALLY)['try_except_finally'](trace)
trace.assert_has_calls([
mocker.call('try'),
mocker.call('except'),
mocker.call('finally')
])
TRY_EXCEPT_ELSE_FINALLY = """
def try_except_else_finally(m):
try:
m('try')
except:
m('except')
else:
m('else')
finally:
m('finally')
"""
def test_RestrictingNodeTransformer__visit_TryFinally__3(
mocker):
"""It allows try-except-else-finally statements."""
trace = mocker.stub()
restricted_exec(TRY_EXCEPT_ELSE_FINALLY)['try_except_else_finally'](trace)
trace.assert_has_calls([
mocker.call('try'),
mocker.call('else'),
mocker.call('finally')
])
BAD_TRY_EXCEPT = """
def except_using_bad_name():
try:
foo
except NameError as _leading_underscore:
# The name of choice (say, _write) is now assigned to an exception
# object. Hard to exploit, but conceivable.
pass
"""
def test_RestrictingNodeTransformer__visit_ExceptHandler__2():
"""It denies bad names in the except as statement."""
result = compile_restricted_exec(BAD_TRY_EXCEPT)
assert result.errors == (
'Line 5: "_leading_underscore" is an invalid variable name because '
'it starts with "_"',)
|
