fix sync-lists script and tests

Run schema validation tests first to ensure the app will be able to run

scripts/sync-lists.js

@@ -8,10 +8,13 @@ function generateLists() {
   }
 
   for (let i = 0; i < mentors.length; i++) {
-    json.tags.push(...mentors[i].tags);
+    json.tags.push(...(mentors[i].tags || []));
     json.countries.push(mentors[i].country);
   }
 
+  json.tags = [...new Set(json.tags)]
+  json.countries = [...new Set(json.countries)]
+
   return json;
 }
 

src/components/App/App.test.js → src/__tests__/App.test.js

@@ -1,6 +1,9 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
-import App from './App';
+import App from '../components/App/App'
+
+// run this tests first
+import './mentors.json-test';
 
 it('renders without crashing', () => {
   const div = document.createElement('div');

src/mentors.json.spec.js → src/__tests__/mentors.json-test.js

@@ -1,8 +1,8 @@
-import mentors from './mentors.json';
+import mentors from '../mentors.json';
 import Ajv from 'ajv';
-import lists from './lists.json';
+import lists from '../lists.json';
 
-import generateLists from '../scripts/sync-lists';
+import generateLists from '../../scripts/sync-lists';
 
 it('should mentors json contains all fields', () => {
   var ajv = new Ajv({ removeAdditional: false });

src/lists.json

@@ -1 +1 @@
-{"tags":["frontend","javascript","reactjs","html","css","frontend","javascript","react","native","css"],"countries":["Israel","USA"]}
+{"tags":["frontend","javascript","reactjs","html","css","react","native"],"countries":["Israel","USA"]}