modified base to take in envar

Author: brentru

.github/workflows/build.yml

@@ -24,4 +24,4 @@ jobs:
         SECRET_IO_USER: ${{ secrets.CI_IO_USERNAME }}
       run: |
         cd tests/
-        python -m unittest discover
+        ADAFRUIT_IO_KEY="$SECRET_IO_KEY" ADAFRUIT_IO_USERNAME="$SECRET_IO_USER" python unittest discover

tests/base.py

@@ -28,7 +28,7 @@ def get_test_key(self):
         """Return the AIO key specified in the ADAFRUIT_IO_KEY environment
         variable, or raise an exception if it doesn't exist.
         """
-        key = os.environ[SECRET_IO_KEY]
+        key = os.environ.get('ADAFRUIT_IO_KEY', None)
         if key is None:
             raise RuntimeError("ADAFRUIT_IO_KEY environment variable must be " \
               "set with valid Adafruit IO key to run this test!")
@@ -38,7 +38,7 @@ def get_test_username(self):
         """Return the AIO username specified in the ADAFRUIT_IO_USERNAME
         environment variable, or raise an exception if it doesn't exist.
         """
-        username = os.environ[SECRET_IO_USER]
+        username = os.environ.get('ADAFRUIT_IO_USERNAME', None)
         if username is None:
             raise RuntimeError("ADAFRUIT_IO_USERNAME environment variable must be " \
               "set with valid Adafruit IO username to run this test!")