pytest – Keycode

Count how many tests related to a keyword via pytest

pytest -k <keyword> --co | grep "collected" | tail -1 | awk '{print $2}'

python -m pytest --co -q | grep "::" | awk -F'::' '{print $1}' | uniq -c

Command	Uses which Python?	Risk
`pytest`	Whatever executable is first in PATH	May run wrong environment
`python -m pytest`	The Python you explicitly called	Much safer

cat $(which pytest)

The shebang line can show which “python” that pytest uses.

python -c "import sys; print(sys.executable)"

which python

This shows the interpreter you’re explicitly invoking.

unittest:

import unittest

class MyTest( unittest.TestCase ):
  def setUp( self ):
    self.variable = ...

pytest:

import pytest

class MyTest:
  @classmethod
  def setup_class( cls ):
    cls.variable = ...

If using unittest:

import unittest

with self.assertRaises( Exception ) as error:
   ...

If using pytest:

import pytest

with pytest.raises( Exception ) as error:
   ...