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 value and skip this transformation step (can combine with the D: flag, order is not important):

[pytest]
env =
R:RUN_PATH=/run/path/{USER}
R:D:RUN_PATH_IF_NOT_SET=/run/path/{USER}


## Project details

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