Resolve "Add some tests"

Closes #19 (closed)

.gitlab-ci.yml

-image: 'continuumio/miniconda:4.7.12'
-
-before_script:
-    - conda env create -f env_test.yml
-    - conda activate bolsonaro
-    
-test:
-    script:
-        - pytest tests/
\ No newline at end of file