Add gitlab ci job

.gitlab-ci.yml

@@ -0,0 +1,12 @@
+tests:
+  stage: test
+  coverage: '/TOTAL\s+\d+\s+\d+\s+(\d+%)/'
+  image: python:3.7
+  before_script:
+    - pip install poetry --quiet
+    - poetry config cache-dir .cache/poetry
+    - poetry config virtualenvs.in-project true
+    - poetry install --no-interaction --quiet
+  script:
+    - poetry run coverage run --module unittest
+    - poetry run coverage report