PyTest

install pytest

pip install pytest

Pytest requires the test function names to start with test

Run all tests

pytest Or pytest -v

To execute the tests from a specific file

pytest <filename> -v

To execute the tests containing a string in its name we can use the following syntax −

pytest -k <substring> -v

group the tests using markers

import pytest
@pytest.mark.<markername>

Run the tests using markers

pytest -m <markername> -v

Fixture the tests

Fixtures are used to feed some data to the tests

import pytest
@pytest.fixture

make fixtures accessible across multiple test files

create conftest.py file

import pytest
@pytest.fixture

Parameterizing a test

import pytest
@pytest.mark.parametrize

xfail tests

import pytest
@pytest.mark.xfail

skip tests

import pytest
@pytest.mark.skip

stop the execution of test suite soon after n number of test fails

pytest --maxfail = <num>

Run Tests in Parallel

install pytest-xdist

pip install pytest-xdist

run tests parallely

pytest -n 3

generate the details of the test execution in an xml file

pytest <file-name>.py -v --junitxml="result.xml"