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"""
Tests about imports
"""
import pytest
from RestrictedPython import compile_restricted_exec
from RestrictedPython import safe_builtins
from tests.helper import restricted_exec
OS_IMPORT_EXAMPLE = """
import os
os.listdir('/')
"""
def test_os_import():
"""It does not allow to import anything by default.
The `__import__` function is not provided as it is not safe.
"""
# Caution: This test is broken on PyPy until the following issue is fixed:
# https://bitbucket.org/pypy/pypy/issues/2653
# PyPy currently ignores the restriction of the `__builtins__`.
glb = {'__builtins__': safe_builtins}
with pytest.raises(ImportError) as err:
restricted_exec(OS_IMPORT_EXAMPLE, glb)
assert '__import__ not found' == str(err.value)
BUILTINS_EXAMPLE = """
import builtins
mygetattr = builtins['getattr']
"""
def test_import_py3_builtins():
"""It should not be allowed to access global builtins in Python3."""
result = compile_restricted_exec(BUILTINS_EXAMPLE)
assert result.code is None
assert result.errors == (
'Line 2: "builtins" is a reserved name.',
'Line 4: "builtins" is a reserved name.'
)
BUILTINS_AS_EXAMPLE = """
import builtins as glb
mygetattr = glb['getattr']
"""
def test_import_py3_as_builtins():
"""It should not be allowed to access global builtins in Python3."""
result = compile_restricted_exec(BUILTINS_AS_EXAMPLE)
assert result.code is None
assert result.errors == ('Line 2: "builtins" is a reserved name.',)
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