How to pass environment variables to pytest

Question

Before I start executing the tests in my Python project, I read some environment variables and set some variables with these values read. My tests will run on the desired en

Answer 1

I finally found the answer i was looking for.

we can set the environment variables like this before running tests using py.test

ENV_NAME='staging' ENV_NUMBER='5' py.test

Answer 2

There are few ways you can achieve this

1. If you dont want to use the environment variable , you can use pytest addoptions as https://docs.pytest.org/en/latest/example/simple.html

2. You can write a wrapper script like this to call enviornment variables

   import os
   import py
   env_name = os.environ["ENV_NAME"]
   env_no = os.environ["ENV_NUMBER"]
   pytest_args=(env_name,env_no)
   pytest.main('-s' ,pytest_args,test_file.py) 
   

in test_file.py you can use

   env_n, env_n = pytest.config.getoption('pytest_args')

  

3. Alternate method if you just want to pass the date not set enviornment variable

on command line you can use it as

   py.test --testdata ="ENV_NAME:staging,ENV_NUMBER:5"

You can use in your test file

pytest_params = pytest.config.getoption('testdata')
params = pytest_params.split(":")
param_dict = dict(params[i:i+2] for i in range(0,len(params),2))
env_name = param_dict["ENV_Name"]