Vehicle-Anti-Theft-Face-Rec.../venv/Lib/site-packages/nbformat/v3/tests/test_json.py

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2020-11-12 16:05:57 +00:00
import copy
import json
from unittest import TestCase
from ..._compat import decodebytes
from ..nbjson import reads, writes
from ..nbbase import from_dict
from .. import nbjson
from .nbexamples import nb0
from . import formattest
from .nbexamples import nb0
class TestJSON(formattest.NBFormatTest, TestCase):
nb0_ref = None
ext = 'ipynb'
mod = nbjson
def test_roundtrip_nosplit(self):
"""Ensure that multiline blobs are still readable"""
# ensures that notebooks written prior to splitlines change
# are still readable.
s = writes(nb0, split_lines=False)
self.assertEqual(nbjson.reads(s),nb0)
def test_roundtrip_split(self):
"""Ensure that splitting multiline blocks is safe"""
# This won't differ from test_roundtrip unless the default changes
s = writes(nb0, split_lines=True)
self.assertEqual(nbjson.reads(s),nb0)
def test_strip_transient(self):
"""transient values aren't written to files"""
nb = copy.deepcopy(nb0)
nb.orig_nbformat = 2
nb.orig_nbformat_minor = 3
nb.worksheets[0].cells[0].metadata.trusted = False
nbs = nbjson.writes(nb)
nb2 = from_dict(json.loads(nbs))
self.assertNotIn('orig_nbformat', nb2)
self.assertNotIn('orig_nbformat_minor', nb2)
for cell in nb2.worksheets[0].cells:
self.assertNotIn('trusted', cell.metadata)
def test_to_json(self):
"""to_notebook_json doesn't strip transient"""
nb = copy.deepcopy(nb0)
nb.orig_nbformat = 2
nb.orig_nbformat_minor = 3
nb.worksheets[0].cells[0].metadata.trusted = False
nbs = json.dumps(nb)
nb2 = nbjson.to_notebook(json.loads(nbs))
nb2 = from_dict(json.loads(nbs))
self.assertIn('orig_nbformat', nb2)
self.assertIn('orig_nbformat_minor', nb2)
cell = nb2.worksheets[0].cells[0]
self.assertIn('trusted', cell.metadata)
def test_read_png(self):
"""PNG output data is b64 unicode"""
s = writes(nb0)
nb1 = nbjson.reads(s)
found_png = False
for cell in nb1.worksheets[0].cells:
if not 'outputs' in cell:
continue
for output in cell.outputs:
if 'png' in output:
found_png = True
pngdata = output['png']
self.assertEqual(type(pngdata), str)
# test that it is valid b64 data
b64bytes = pngdata.encode('ascii')
raw_bytes = decodebytes(b64bytes)
assert found_png, "never found png output"
def test_read_jpeg(self):
"""JPEG output data is b64 unicode"""
s = writes(nb0)
nb1 = nbjson.reads(s)
found_jpeg = False
for cell in nb1.worksheets[0].cells:
if not 'outputs' in cell:
continue
for output in cell.outputs:
if 'jpeg' in output:
found_jpeg = True
jpegdata = output['jpeg']
self.assertEqual(type(jpegdata), str)
# test that it is valid b64 data
b64bytes = jpegdata.encode('ascii')
raw_bytes = decodebytes(b64bytes)
assert found_jpeg, "never found jpeg output"