Run tests against miniconda on circleci

Author: Doruk Ozturk

.circleci/config.yml

@@ -70,6 +70,10 @@ conda-steps: &conda-steps
           conda config --add channels conda-forge
           conda install virtualenv
           pip install tox
+    - run:
+        name: Run the tests
+        command: |
+          tox -e $TEST_TOX_ENV
     - run:
         name: Build wheel and source distribution
         command: |