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test_sign.py
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test_sign.py
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"""Test Notebook signing"""
#-----------------------------------------------------------------------------
# Copyright (C) 2014, The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from .. import sign
from .base import TestsBase
from ..current import read
from IPython.core.getipython import get_ipython
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
class TestNotary(TestsBase):
def setUp(self):
self.notary = sign.NotebookNotary(
secret=b'secret',
profile_dir=get_ipython().profile_dir
)
with self.fopen(u'test3.ipynb', u'r') as f:
self.nb = read(f, u'json')
def test_algorithms(self):
last_sig = ''
for algo in sign.algorithms:
self.notary.algorithm = algo
self.notary.sign(self.nb)
sig = self.nb.metadata.signature
print(sig)
self.assertEqual(sig[:len(self.notary.algorithm)+1], '%s:' % self.notary.algorithm)
self.assertNotEqual(last_sig, sig)
last_sig = sig
def test_sign_same(self):
"""Multiple signatures of the same notebook are the same"""
sig1 = self.notary.compute_signature(self.nb)
sig2 = self.notary.compute_signature(self.nb)
self.assertEqual(sig1, sig2)
def test_change_secret(self):
"""Changing the secret changes the signature"""
sig1 = self.notary.compute_signature(self.nb)
self.notary.secret = b'different'
sig2 = self.notary.compute_signature(self.nb)
self.assertNotEqual(sig1, sig2)
def test_sign(self):
self.notary.sign(self.nb)
sig = self.nb.metadata.signature
self.assertEqual(sig[:len(self.notary.algorithm)+1], '%s:' % self.notary.algorithm)
def test_check_signature(self):
nb = self.nb
md = nb.metadata
notary = self.notary
check_signature = notary.check_signature
# no signature:
md.pop('signature', None)
self.assertFalse(check_signature(nb))
# hash only, no algo
md.signature = notary.compute_signature(nb)
self.assertFalse(check_signature(nb))
# proper signature, algo mismatch
notary.algorithm = 'sha224'
notary.sign(nb)
notary.algorithm = 'sha256'
self.assertFalse(check_signature(nb))
# check correctly signed notebook
notary.sign(nb)
self.assertTrue(check_signature(nb))
def test_mark_cells_untrusted(self):
cells = self.nb.worksheets[0].cells
self.notary.mark_cells(self.nb, False)
for cell in cells:
if cell.cell_type == 'code':
self.assertIn('trusted', cell)
self.assertFalse(cell.trusted)
else:
self.assertNotIn('trusted', cell)
def test_mark_cells_trusted(self):
cells = self.nb.worksheets[0].cells
self.notary.mark_cells(self.nb, True)
for cell in cells:
if cell.cell_type == 'code':
self.assertIn('trusted', cell)
self.assertTrue(cell.trusted)
else:
self.assertNotIn('trusted', cell)
def test_check_cells(self):
nb = self.nb
self.notary.mark_cells(nb, True)
self.assertTrue(self.notary.check_cells(nb))
for cell in nb.worksheets[0].cells:
self.assertNotIn('trusted', cell)
self.notary.mark_cells(nb, False)
self.assertFalse(self.notary.check_cells(nb))
for cell in nb.worksheets[0].cells:
self.assertNotIn('trusted', cell)
def test_trust_no_output(self):
nb = self.nb
self.notary.mark_cells(nb, False)
for cell in nb.worksheets[0].cells:
if cell.cell_type == 'code':
cell.outputs = []
self.assertTrue(self.notary.check_cells(nb))