pytest: helps you write better Django apps

QZUFTU IFMQTZPVXSJUFCFUUFS %KBOHPBQQT "OESFBT1FMNF %KBOHP$PO&VSPQF 4MJEFTIUUQTQFBLFSEFDLDPNQFMNF personalkollen

5PQJDT w5FTUJOHJO%KBOHPPWFSWJFX w*OUSPEVDUJPOUPQZUFTU w%KBOHPBOEQZUFTU w5FTUPSHBOJ[BUJPO w'BTUFSUFTUSVOT wQZUFTUpYUVSFT

5FTUJOHJO%KBOHP

BGVMMGFBUVSFE1ZUIPOUFTUJOHUPPM QZUFTU

1MVHJOT w%KBOHPQZUFTUEKBOHP w%JTUSJCVUFEQBSBMMFMJ[FEQZUFTUYEJTU w-PHDBQUVSFQZUFTUDBQUVSFMPH w$PWFSBHFSFQPSUJOHQZUFTUDPW wBOENBOZNPSF wIUUQQZUFTUPSHMBUFTUQMVHJOTIUNMFYUFSOBM QMVHJOT

XJUIPVUCPJMFSQMBUF 1ZUIPOJDUFTUT

%FNPUJNF

%FNP#FGPSF from django.test import TestCase ! class TestHelloWorld(TestCase):
def test_hello_world(self): response = self.client.get('/') ! self.assertEqual(response.status_code, 200) self.assertIn('Hello', response.content.decode('utf-‐8'))

%FNP"GUFS def test_hello_world(client): response = client.get('/')
! assert response.status_code == 200 assert 'Hello' == response.content.decode('utf-‐8')

%FNPUJNF w"TTFSUJPOTXJUIBTTFSUTUBUFNFOU w/P5FTU$BTFTVCDMBTTJOH wQZUFTUpYUVSFTGPSUFTUEFQFOEFODJFT

*OUFHSBUJPOCFUXFFOQZUFTUBOE%KBOHP QZUFTUEKBOHP

*OTUBMMTQZUFTUEKBOHPBOEQZUFTU pip install pytest-‐django

"EETZPVSQSPKFDUUP1ZUIPOQBUI SFRVJSFTTFUVQQZUPCFQSFTFOU pip install -‐e .

"WFSZNJOJNBMTFUVQQZ from setuptools import setup setup(name='yourproject', version='1.0')

$POpHVSFTFUUJOHTJOQZUFTUJOJ [pytest] DJANGO_SETTINGS_MODULE=settings

%KBOHP5FTU$BTFT KVTUXPSLT

3VOOJOHUIFUFTUT

3VOBMMUIFUFTUT $ py.test

3VOBMMUFTUTJOBTQFDJpDpMF $ py.test test_views.py

3VOBMMUFTUDBTFTUIBUBSFOBNFE UFTU@GPP $ py.test -‐k test_foo

5FTUPSHBOJ[BUJPO

#ZEFGBVMU UFTUTBSFGPVOEJO test_*.py

$POpHVSBCMFJOQZUFTUJOJ [pytest] python_files = check_*.py

5FTUTDBOMJWFVOEFS%KBOHPBQQT polls/tests/views.py blog/tests/views.py

5FTUTDBOMJWFJOUIFJSPXOSPPUEJSFDUPSZ tests/polls/views.py tests/blog/models.py

5FTUTCFTQMJUVQJOUPEJGGFSFOUSPPU EJSFDUPSJFT unit_tests/blog/models.py integration_tests/test_foo.py browser_tests/test_login.py

testing Running tests

5FTUEBUBCBTFSFVTF

3FVTFEBUBCBTFGSPNMBTUSVO py.test -‐-‐reuse-‐db

1VUUIJTJOQZUFTUJOJUPBMXBZTSFVTFUIF EBUBCBTF ! ! [pytest] addopts = -‐-‐reuse-‐db

3FDSFBUFEBUBCBTFTDIFNBXIFOEPJOH NPEFMDIBOHFT py.test -‐-‐reuse-‐db -‐-‐create-‐db

.BLFVTFPGUIPTFFYUSBDPSFT 3VOUFTUTJOQBSBMMFM

YEJTUQSPWJEFTEJTUSJCVUFEUFTUJOH pip install pytest-‐xdist

3VOUFTUTJOGPVSQBSBMMFMQSPDFTTFT $ py.test -‐n 4

QZUFTUEKBOHPBOEEBUBCBTFT

5IJTXJMMBMMPXEBUBCBTFBDDFTT import pytest ! @pytest.mark.django_db def test_user_count():
assert User.objects.count() == 0

5IJTXJMMGBJM EBUBCBTFBDDFTTJTOPU BMMPXFE def test_user_count(): assert User.objects.count()
== 0

! ! ! ___________ test_user_count ____________ test_db_access.py:4: in test_user_count
> assert User.objects.count() == 0 ! ... ! E Failed: Database access not allowed, use the "django_db" mark to enable

.BSLBOFOUJSFNPEVMFGPSEBUBCBTF VTBHF import pytest ! pytestmark = pytest.mark.django_db
! def test_foo(): pass def test_bar(): pass

3VOBMMUFTUTXIJDIEPFTOPUUPVDIUIF EBUBCBTF $ py.test -‐m 'not django_db'

3FQMBDFNFOUGPSVOJUUFTUTFU6QUFBS%PXO QZUFTUpYUVSFT

[{"pk": 1, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐09T09:10:00Z", "is_scheduled": true, "stop":
"2011-‐08-‐09T09:40:00Z", "logged_time": 31946}}, {"pk": 2, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐10T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐10T09:30:00Z", "logged_time": 32038}}, {"pk": 3, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐10T09:10:00Z", "is_scheduled": true, "stop": "2011-‐08-‐10T09:40:00Z", "logged_time": 32039}}, {"pk": 4, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐11T09:10:00Z", "is_scheduled": true, "stop": "2011-‐08-‐11T09:40:00Z", "logged_time": 32104}}, {"pk": 5, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐11T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐11T09:30:00Z", "logged_time": 32105}}, {"pk": 6, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐12T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐12T09:30:00Z", "logged_time": 32161}}, {"pk": 7, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐12T09:10:00Z", "is_scheduled": true, "stop": "2011-‐08-‐12T09:40:00Z", "logged_time": 32162}}, {"pk": 8, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐15T15:30:00Z", "is_scheduled": true, "stop": "2011-‐08-‐15T16:00:00Z", "logged_time": 32390}}, {"pk": 9, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐22T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐22T09:30:00Z", "logged_time": 32784}}, {"pk": 10, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐23T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐23T09:30:00Z", "logged_time": 32838}}, {"pk": 11, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐24T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐24T09:30:00Z", "logged_time": 32903}}, {"pk": 12, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐25T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐25T09:30:00Z", "logged_time": 32964}}, {"pk": 13, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐26T09:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐26T09:30:00Z", "logged_time": 33029}}, {"pk": 14, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐29T12:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐29T12:30:00Z", "logged_time": 33244}}, {"pk": 15, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐29T15:30:00Z", "is_scheduled": true, "stop": "2011-‐08-‐29T16:00:00Z", "logged_time": 33253}}, {"pk": 16, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐30T11:30:00Z", "is_scheduled": true, "stop": "2011-‐08-‐30T12:00:00Z", "logged_time": 33281}}, {"pk": 17, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐30T12:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐30T12:30:00Z", "logged_time": 33283}}, {"pk": 18, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐08-‐31T12:00:00Z", "is_scheduled": true, "stop": "2011-‐08-‐31T12:30:00Z", "logged_time": 33341}}, {"pk": 19, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐01T11:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐01T12:00:00Z", "logged_time": 33400}}, {"pk": 20, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐01T15:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐01T16:00:00Z", "logged_time": 33414}}, {"pk": 21, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐02T11:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐02T12:00:00Z", "logged_time": 33453}}, {"pk": 22, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐02T15:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐02T16:00:00Z", "logged_time": 33475}}, {"pk": 23, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐02T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐02T12:30:00Z", "logged_time": 33484}}, {"pk": 24, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐03T09:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐03T10:00:00Z", "logged_time": 33579}}, {"pk": 25, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐03T10:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐03T10:30:00Z", "logged_time": 33586}}, {"pk": 26, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐03T10:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐03T11:00:00Z", "logged_time": 33587}}, {"pk": 27, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐03T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐03T12:30:00Z", "logged_time": 33589}}, {"pk": 28, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐03T12:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐03T13:00:00Z", "logged_time": 33591}}, {"pk": 29, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐04T09:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐04T10:00:00Z", "logged_time": 33700}}, {"pk": 30, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐04T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐04T12:30:00Z", "logged_time": 33702}}, {"pk": 31, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐04T12:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐04T13:00:00Z", "logged_time": 33703}}, {"pk": 32, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐05T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐05T12:30:00Z", "logged_time": 33732}}, {"pk": 33, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐05T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐05T12:30:00Z", "logged_time": 33734}}, {"pk": 34, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐05T15:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐05T16:00:00Z", "logged_time": 33744}}, {"pk": 35, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐06T11:30:00Z", "is_scheduled": true, "stop": "2011-‐09-‐06T12:00:00Z", "logged_time": 33794}}, {"pk": 36, "model": "tracker.loggedtimebreak", "fields": {"start": "2011-‐09-‐06T12:00:00Z", "is_scheduled": true, "stop": "2011-‐09-‐06T12:30:00Z", "logged_time": %KBOHPpYUVSFQZUFTUpYUVSF

(FUBOJOTUBODFPGUIFUFTUDMJFOU ! def test_with_client(client): response =
client.get('/foo/') assert response.status_code == 200

%FNPUJNF

%FpOJOHBpYUVSF QVUUIJTJODPOGUFTUQZ import pytest from selenium.webdriver import Firefox
! @pytest.yield_fixture(scope='session') def webdriver(): driver = Firefox() yield driver driver.quit()

8JMMIBWF'JSFGPYTUBSUFEXIFOUIFUFTU SVOT def test_hello(live_server, webdriver): webdriver.get(live_server.url
+ '/') h1 = (webdriver .find_element_by_css_selector('h1')) ! assert h1.text == 'Hello Djangocon'

3FRVFTU%KBOHPEBUBCBTFBDDFTT JOBpYUVSF import pytest ! ! @pytest.fixture def
person_in_db(db): return Person.objects.create( name='Andreas')

3FRVFTU%KBOHPEBUBCBTFBDDFTT JOBpYUVSF import pytest from factories import PersonFactory
! @pytest.fixture def person_in_db(db): return PersonFactory.create( name='Andreas') Use factory_boy for creating test model data

.PSFpYUVSFTGFBUVSFT w1BSBNFUSJ[BUJPO w4DPQJOH SFVTFFYQFOTJWFTFUVQ w"VUPVTFpYUVSFT

8PSLTXJUICPUI XPSMET

(SFBUSFTPVSDFT w$BSM.FZFS 5FTUJOHBOE%KBOHP 1Z$PO w%KBOHPUFTUJOHCFTUQSBDUJDFT wIUUQXXXZPVUVCFDPNXBUDI WJDL/2D/9J4 ! w)PMHFS,SFLFM QZUFTUSBQJEBOETJNQMFUFTUJOHXJUI1ZUIPO
&VSP1ZUIPO wIUUQXXXZPVUVCFDPNXBUDI WL;+)6N;9. ! wQZUFTUEPDVNFOUBUJPO wIUUQQZUFTUPSH ! wQZUFTUEKBOHPEPDVNFOUBUJPO wIUUQQZUFTUEKBOHPSFBEUIFEPDTPSH

&NBJMBOESFBT!QFMNFTF 5XJUUFS!BOESFBTQFMNF *3$QZMJCPO'SFFOPEF  4MJEFTIUUQTQFBLFSEFDLDPNQFMNF 2VFTUJPOT

pytest: helps you write better Django apps

pytest: helps you write better Django apps

More Decks by Andreas Pelme

Other Decks in Programming

Featured

Transcript