add OLX scraper test NPM script

package.json

@@ -12,7 +12,8 @@
     "docker-start": "docker start pg_marketalerts",
     "docker-stop": "docker stop pg_marketalerts",
     "crawl": "cd app/crawler && node npmCrawl.js",
-    "test-search": "cd test && node searchTest.js"
+    "test-search": "cd test && node searchTest.js",
+    "test-olx-scraper": "cd test && node olxScrapeTest.js"
   },
   "repository": {
     "type": "git",

test/olxScrapeTest.js

@@ -0,0 +1,17 @@
+"use strict";
+
+const olxCrawler = require("../app/crawler/specific/olx");
+
+const urlToScrape = process.argv[2] || undefined;
+
+if (urlToScrape) {
+  const crawler = new olxCrawler();
+
+  (async () => {
+    const data = await crawler.scrapeAd(urlToScrape);
+    console.log(data);
+  })();
+} else {
+  console.log("No URL to scrape. Use like this : ");
+  console.log("npm run test-olx-scraper -- URL_TO_SCRAPE");
+}