theskumar / python-dotenv / 354

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Fix empty self-referential variable issue (#135)

* Show empty self-referential variable issue

theskumar/python-dotenv#132

* Correct test names to use interpolation

* Only use previously defined variables when handling interpolation

* Recover original os.environ after tweaking it in a test

4 of 4 new or added lines in 1 file covered. (100.0%)

250 of 270 relevant lines covered (92.59%)

5.54 hits per line