refactor: migrate on jest (#386)

Author: evilebottnawi

.travis.yml

@@ -18,10 +18,10 @@ cache:
 matrix:
   fast_finish: true
   include:
-    - env: JOB_PART=lint
-      node_js: 6
+    - env: JOB_PART=pretest
+      node_js: 11
     - &test
-      env: JOB_PART=test
+      env: JOB_PART=test:coverage
       node_js: 6
     - <<: *test
       node_js: 8

appveyor.yml

@@ -37,4 +37,4 @@ before_test:
 test_script:
   - node --version
   - npm --version
-  - cmd: npm test
+  - cmd: npm run test:only