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import contextlib
from RestrictedPython import compile_restricted_exec
from RestrictedPython.Guards import guarded_unpack_sequence
from tests.helper import restricted_exec
WITH_STMT_WITH_UNPACK_SEQUENCE = """
def call(ctx):
with ctx() as (a, (c, b)):
return a, c, b
"""
def test_with_stmt_unpack_sequence(mocker):
@contextlib.contextmanager
def ctx():
yield (1, (2, 3))
_getiter_ = mocker.stub()
_getiter_.side_effect = lambda ob: ob
glb = {
'_getiter_': _getiter_,
'_unpack_sequence_': guarded_unpack_sequence
}
restricted_exec(WITH_STMT_WITH_UNPACK_SEQUENCE, glb)
ret = glb['call'](ctx)
assert ret == (1, 2, 3)
_getiter_.assert_has_calls([
mocker.call((1, (2, 3))),
mocker.call((2, 3))])
WITH_STMT_MULTI_CTX_WITH_UNPACK_SEQUENCE = """
def call(ctx1, ctx2):
with ctx1() as (a, (b, c)), ctx2() as ((x, z), (s, h)):
return a, b, c, x, z, s, h
"""
def test_with_stmt_multi_ctx_unpack_sequence(mocker):
result = compile_restricted_exec(WITH_STMT_MULTI_CTX_WITH_UNPACK_SEQUENCE)
assert result.errors == ()
@contextlib.contextmanager
def ctx1():
yield (1, (2, 3))
@contextlib.contextmanager
def ctx2():
yield (4, 5), (6, 7)
_getiter_ = mocker.stub()
_getiter_.side_effect = lambda ob: ob
glb = {
'_getiter_': _getiter_,
'_unpack_sequence_': guarded_unpack_sequence
}
exec(result.code, glb)
ret = glb['call'](ctx1, ctx2)
assert ret == (1, 2, 3, 4, 5, 6, 7)
_getiter_.assert_has_calls([
mocker.call((1, (2, 3))),
mocker.call((2, 3)),
mocker.call(((4, 5), (6, 7))),
mocker.call((4, 5)),
mocker.call((6, 7))
])
WITH_STMT_ATTRIBUTE_ACCESS = """
def simple(ctx):
with ctx as x:
x.z = x.y + 1
def assign_attr(ctx, x):
with ctx as x.y:
x.z = 1
def load_attr(w):
with w.ctx as x:
x.z = 1
"""
def test_with_stmt_attribute_access(mocker):
_getattr_ = mocker.stub()
_getattr_.side_effect = getattr
_write_ = mocker.stub()
_write_.side_effect = lambda ob: ob
glb = {'_getattr_': _getattr_, '_write_': _write_}
restricted_exec(WITH_STMT_ATTRIBUTE_ACCESS, glb)
# Test simple
ctx = mocker.MagicMock(y=1)
ctx.__enter__.return_value = ctx
glb['simple'](ctx)
assert ctx.z == 2
_write_.assert_called_once_with(ctx)
_getattr_.assert_called_once_with(ctx, 'y')
_write_.reset_mock()
_getattr_.reset_mock()
# Test assign_attr
x = mocker.Mock()
glb['assign_attr'](ctx, x)
assert x.z == 1
assert x.y == ctx
_write_.assert_has_calls([
mocker.call(x),
mocker.call(x)
])
_write_.reset_mock()
# Test load_attr
ctx = mocker.MagicMock()
ctx.__enter__.return_value = ctx
w = mocker.Mock(ctx=ctx)
glb['load_attr'](w)
assert w.ctx.z == 1
_getattr_.assert_called_once_with(w, 'ctx')
_write_.assert_called_once_with(w.ctx)
WITH_STMT_SUBSCRIPT = """
def single_key(ctx, x):
with ctx as x['key']:
pass
def slice_key(ctx, x):
with ctx as x[2:3]:
pass
"""
def test_with_stmt_subscript(mocker):
_write_ = mocker.stub()
_write_.side_effect = lambda ob: ob
glb = {'_write_': _write_}
restricted_exec(WITH_STMT_SUBSCRIPT, glb)
# Test single_key
ctx = mocker.MagicMock()
ctx.__enter__.return_value = ctx
x = {}
glb['single_key'](ctx, x)
assert x['key'] == ctx
_write_.assert_called_once_with(x)
_write_.reset_mock()
# Test slice_key
ctx = mocker.MagicMock()
ctx.__enter__.return_value = (1, 2)
x = [0, 0, 0, 0, 0, 0]
glb['slice_key'](ctx, x)
assert x == [0, 0, 1, 2, 0, 0, 0]
_write_.assert_called_once_with(x)
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