Incorrect introspection for MagicMock.assert_has_calls #234
Description
Hi,
I wrote a test that calls a MagicMock() with a list of bytes, then uses assert_has_calls with a different argument (list of strings).
Here is pytest's output:
def test_foo():
from unittest.mock import MagicMock, call
f = MagicMock()
f("foo", [b"bar"])
f("foo", [b"baz"])
f.assert_has_calls(
[
call("foo", ["bar"]),
call("foo", ["baz"]),
],
> any_order=True
)
E AssertionError: (call('foo', ['bar']), call('foo', ['baz'])) not all found in call list
E
E pytest introspection follows:
E
E Args:
E assert ('foo', [b'baz']) == ([call('foo', ['bar']), call('foo', ['baz'])],)
E At index 0 diff: 'foo' != [call('foo', ['bar']), call('foo', ['baz'])]
E Left contains one more item: [b'baz']
E Full diff:
E - ([call('foo', ['bar']), call('foo', ['baz'])],)
E + ('foo', [b'baz'])
E Kwargs:
E assert {} == {'any_order': True}
E Right contains 1 more item:
E {'any_order': True}
E Full diff:
E - {'any_order': True}
E + {}
The first line of the error(AssertionError) is correct, but the other ones aren't:
('foo', [b'baz']) == ([call('foo', ['bar']), call('foo', ['baz'])],)is not exactly what was asserted; instead the assertion was that the left side is inside the right side's first elementassert {} == {'any_order': True}this is not part of the assertion,any_orderis just an argument of the function
Instead, I would probably expect something like this:
E AssertionError: (call('foo', ['bar']), call('foo', ['baz'])) not all found in call list
E
E pytest introspection follows:
E
E assert call('foo', [b'baz']) in [call('foo', ['bar']), call('foo', ['baz'])]
OS: Debian 10
Python version: 3.7.3
pytest version: 6.2.2
pip list
Package Version Location
----------------------------- ------------------------------- ---------------------------------------------------------------------------
aiohttp 3.5.1
aiohttp-utils 3.1.1
aiosqlite 0.16.0
alabaster 0.7.12
amqp 2.5.2
ansible 2.7.7
anyjson 0.3.3
apache-libcloud 2.4.0
apipkg 1.5
appdirs 1.4.3
argcomplete 1.8.1
arrow 0.12.1
asgiref 3.2.10
asn1crypto 0.24.0
aspy.yaml 1.3.0
async-generator 1.10
async-timeout 3.0.1
atomicwrites 1.1.5
attrs 19.3.0
attrs-strict 0.1.0
azure-common 1.1.24
azure-nspkg 3.0.2
azure-storage 0.36.0
Babel 2.7.0
bcrypt 3.1.6
beautifulsoup4 4.8.1
billiard 3.6.3.0
binwalk 2.1.2
black 19.10b0
bleach 3.1.2
blessed 1.15.0
blinker 1.4
borgbackup 1.1.9
Brlapi 0.6.7
Brotli 1.0.7
cached-property 1.5.2
cachetools 4.2.0
cassandra-driver 3.20.1
celery 4.4.0
certifi 2018.8.24
cffi 1.14.3
cfgv 2.0.1
chardet 3.0.4
click 7.1.2
colorama 0.3.7
commonmark 0.9.1
confluent-kafka 1.5.0
coreapi 2.3.3
coreschema 0.0.4
coverage 5.0
cryptography 2.6.1
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cycler 0.10.0
daiquiri 2.1.1
dash 1.12.0
dash-bootstrap-components 0.10.2
dash-core-components 1.10.0
dash-html-components 1.0.3
dash-renderer 1.4.1
dash-table 4.7.0
decorator 4.3.0
defusedxml 0.5.0
Deprecated 1.2.6
devscripts 2.19.5+deb10u1
diffoscope 113
distro 1.5.0
distro-info 0.21
Django 2.2.15
django-cors-headers 3.2.0
django-extensions 2.2.5
django-js-reverse 0.9.1
django-stubs 1.7.0
django-test-migrations 1.1.0
django-webpack-loader 0.6.0
djangorestframework 3.10.3
djangorestframework-stubs 1.4.0
docker 4.3.1
docker-compose 1.27.4
dockerpty 0.4.1
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dulwich 0.19.13
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entrypoints 0.3
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fastimport 0.9.8
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fixtures 3.0.0
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future 0.18.2
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identify 1.4.7
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isort 5.5.3
itsdangerous 0.24
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Jinja2 2.10.3
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junit-xml 1.8
jupyter-client 5.2.3
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kafka-python 2.0.0
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launchpadlib 1.10.13
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lazr.uri 1.0.3
libarchive-c 2.8
linecache2 1.0.0
llfuse 1.3.6
lockfile 0.12.2
louis 3.8.0
lxml 4.4.1
markdown-it-py 0.5.6
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matplotlib 3.0.2
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mercurial 5.7
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oauthlib 3.1.0
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parso 0.7.0
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patool 1.12
pbr 5.4.5
pexpect 4.6.0
pg-activity 2.1.0
pg8000 1.13.2
pickleshare 0.7.5
pifpaf 3.0.0
pika 1.1.0
Pillow 5.4.1
pip 21.0.1
pkginfo 1.5.0.1
plotille 3.7.2
plotly 4.5.4
pluggy 0.13.1
pony 0.7.13
port-for 0.4
powerline-status 2.7
pre-commit 1.20.0
pristine-zip 0.1.dev73+gefd1d06.d20200805 /home/dev/pristine_zip
progressbar 2.5
prometheus-client 0.6.0
prompt-toolkit 1.0.15
psutil 5.5.1
psycopg2 2.8.6
py 1.9.0
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pysmbc 1.0.15.6
pytest 6.2.2
pytest-cov 2.10.0
pytest-cover 3.0.0
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pytest-mock 1.13.0
pytest-parallel 0.0.10
pytest-postgresql 2.5.3
pytest-xdist 1.31.0
python-apt 1.8.4.3
python-cephlibs 0.94.5.post1
python-daemon 2.2.4
python-dateutil 2.8.1
python-debian 0.1.35
python-debianbts 2.8.2
python-dotenv 0.15.0
python-hglib 2.6.1
python-jose 3.1.0
python-json-logger 0.1.11
python-keycloak 0.20.0
python-magic 0.4.16
python-memcached 1.58
python-mimeparse 1.6.0
pytz 2019.1
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pyxattr 0.6.1
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redis 3.3.11
regex 2020.2.20
reportbug 7.5.3-deb10u1
reportlab 3.5.13
requests 2.25.1
requests-ftp 0.3.1
requests-kerberos 0.11.0
requests-mock 1.8.0
requests-ntlm 1.1.0
retrying 1.3.3
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swh.web 0.0.284.dev6+g0b974c89 /home/dev/swh-environment/swh-web
swh.web.client 0.2.2 /home/dev/.local/lib/python3.7/site-packages
systemd-python 234
tables 3.4.4
tblib 1.6.0
tenacity 6.0.0
terminado 0.8.1
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testresources 2.0.1
testtools 2.4.0
texttable 1.6.3
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toml 0.10.2
tornado 5.1.1
tox 3.7.0
traceback2 1.4.0
traitlets 4.3.2
trio 0.17.0
typed-ast 1.4.0
typing-extensions 3.7.4.1
unattended-upgrades 0.1
unidiff 0.5.4
unittest2 1.1.0
uritemplate 3.0.1
urllib3 1.24.1
vcversioner 2.16.0.0
vine 1.3.0
virtualenv 16.7.7
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wcwidth 0.1.7
webencodings 0.5.1
websocket-client 0.57.0
Werkzeug 0.16.0
wheel 0.32.3
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wrapt 1.11.2
xattr 0.9.7
xmlschema 1.3.1
xmltodict 0.11.0
yarl 1.3.0
zipp 0.6.0
Thanks!