separating tests

.travis.yml

   - ./scripts/clean.sh
 
 install:
-  #- npm i -g yarn
-  #- yarn
-  - source ./scripts/installAndroidSDK.sh
+  - npm i -g yarn
+  - yarn
 
 script:
-  #- npm run test
-  - cd android && ./gradlew clean testDebugUnitTest
+  - npm run lint
+  - npm run test:js
+  - source ./scripts/installAndroidSDK.sh
+  - npm run test:android
 
 after_script:
   - echo "BUILD FINISHED"

package.json

   "scripts": {
     "build": ":",
     "lint": "eslint src test",
+    "test:js": "jest",
+    "test:android": "cd android && ./gradlew clean testDebugUnitTest",
+    "test:ios": ":",
     "pretest": "npm run lint",
-    "test": "cd android && ./gradlew clean testDebugUnitTest",
+    "test": "npm run test:js && npm run test:android && npm run test:ios",
     "release": "npm version prerelease && npm publish --tag next && npm view react-native-navigation dist-tags && git push"
   },
   "peerDependencies": {