added formatting stage to ci

.circleci/config.yml

@@ -1,28 +1,49 @@
 version: 2
 jobs:
-  build:
+  format:
     docker:
       - image: circleci/python:3.6.7
     working_directory: ~/repo
     steps:
       - checkout
-
       - restore_cache:
           keys:
             - v1-dependencies-{{ checksum "Pipfile.lock" }}
-
       - run:
           name: install dependencies
           command: |
             pip install pipenv
             export PIPENV_VENV_IN_PROJECT=1
             pipenv install --dev
-
       - save_cache:
           paths:
             - ./venv
           key: v1-dependencies-{{ checksum "Pipfile.lock" }}
+      - run:
+          name: run tests
+          command: |
+            export PIPENV_VENV_IN_PROJECT=1
+            pipenv run black --check .
 
+  test:
+    docker:
+      - image: circleci/python:3.6.7
+    working_directory: ~/repo
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "Pipfile.lock" }}
+      - run:
+          name: install dependencies
+          command: |
+            pip install pipenv
+            export PIPENV_VENV_IN_PROJECT=1
+            pipenv install --dev
+      - save_cache:
+          paths:
+            - ./venv
+          key: v1-dependencies-{{ checksum "Pipfile.lock" }}
       - run:
           name: run tests
           command: |