Test failure due to undocumented required environmental variable $PRIVATE_KEY

[josh-marshall-jax]

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The tests fail due to the following:

File "/home/marshjo/Documents/clarity-docusign/docusign-python-client/test/unit_tests.py", line 22, in <module>
    PrivateKeyBytes = base64.b64decode(os.environ.get("PRIVATE_KEY"))

I suspect that is because your default internal setup includes this. Please add a "Testing" section to the README to cover testing requirements.

[LarryKlugerDS]

Good point, thank you. I have filed internal ticket DCM-4067

[Anntoin]

Would also appreciate a Testing section in the README so we can easily validate these tests independently.