testing multiple node versions

.circleci/config.yml

@@ -1,27 +1,40 @@
 ---
 version: 2
 jobs:
-  build:
-    working_directory: /cli
+  node-latest: &test-build
     docker:
-      - image: node:8
+      - image: node:latest
+    working_directory: /cli
     steps:
       - checkout
       - restore_cache:
           keys:
-            - v2-yarn-{{ .Branch }}-{{checksum "yarn.lock"}}
-            - v2-yarn-{{ .Branch }}
-            - v2-yarn-master
+            - v0-yarn-{{ .Environment.CIRCLE_JOB }}-{{ .Branch }}-{{checksum "yarn.lock"}}
+            - v0-yarn-{{ .Environment.CIRCLE_JOB }}-{{ .Branch }}-
+            - v0-yarn-{{ .Environment.CIRCLE_JOB }}-master-
       - run: yarn
-      - run: {command: "./bin/run version", when: always}
-      - run:
-          when: always
-          command: |
-            npx jest --coverage --runInBand
-            bash <(curl -s https://codecov.io/bash)
+      - run: ./bin/run version
+      - run: yarn test --coverage
+      - run: curl -s https://codecov.io/bash | bash
       - save_cache:
-          key: v2-yarn-{{ .Branch }}-{{checksum "yarn.lock"}}
+          key: v0-yarn-{{ .Environment.CIRCLE_JOB }}-{{ .Branch }}-{{checksum "yarn.lock"}}
           paths:
             - /cli/node_modules
-            - /cli/npm-packages-offline-cache
             - /usr/local/share/.cache/yarn
+            - /root/.cache/cli-engine/yarn
+  node-8:
+    <<: *test-build
+    docker:
+      - image: node:8
+  node-6:
+    <<: *test-build
+    docker:
+      - image: node:6
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - node-latest
+      - node-8
+      - node-6