py.test plugin that allows you to add environment variables.

pytest-env This is a pytest plugin that enables you to set environment variables in a pytest.ini or pyproject.toml file. Installation Install with pip: pip install pytest-env Usage In your pytest.ini file add a key value pair with env as the key and the environment variables as a line separated list of KEY=VALUE entries. The defined variables will be added to the environment before any tests are run: [pytest] env = HOME=~/tmp RUN_ENV=test Or with pyproject.toml: [tool.pytest.ini_options] env = [ "HOME=~/tmp", "RUN_ENV=test", ] Only set if not already set You can use D: (default) as prefix if you don't want to override existing environment variables: [pytest] env = D:HOME=~/tmp D:RUN_ENV=test Transformation You can use existing environment variables using a python-like format, these environment variables will be expended before setting the environment variable: [pytest] env = RUN_PATH=/run/path/{USER} You can apply the R: prefix to keep the raw valu