Version without design pattern builder + some new test

src/ListenerRss.js

@@ -1,22 +1,25 @@
 const Parser = require('rss-parser');
+const ListenerInfo = require('./Models/ListenerRSSInfos');
 
+const DEFAULT_TIMELOOP = 5 * 60; // default timeloop is 5 min
 
 class ListenerRss {
     name = undefined;
     address = undefined;
-    timeloop = 5 * 60; // time in seconds
+    timeloop = DEFAULT_TIMELOOP; // time in seconds
     customfields = [];
 
     // private fields
     parser = null;
-    obj = null;
     loopRunning = false;
 
-    constructor(info) {
-        if(info !== undefined) {
-            this.setData(info);
-            this.setParser();
-        }
+    constructor(name, address, timeloop, customfields) {
+        if(name !== undefined && name instanceof ListenerInfo) { // constructor with 1 arg
+            this.setData(name);
+        } else if (address !== undefined && typeof(address) === 'string') { // construct with between 2 and 4 args
+            this.setData(new ListenerInfo(name, address, timeloop, customfields));
+        } else throw new Error('the constructor must have args');
+        this.setParser();
     }
 
     setParser() {
@@ -27,15 +30,15 @@ class ListenerRss {
                     return Array.isArray(elt[1]) ? elt[1][0] : elt[1];
                 })
             }
-        } : undefined); // if customfield is set -> let's set the parser with, else let the option empty
+        } : {}); // if customfield is set -> let's set the parser with, else let the option empty
     }
 
     setData(infos) {
         // Set data
-        this.name = infos._name === undefined ? infos._address : infos._name; // if name is undefined let's take the address
+        this.name = infos._name;
         this.address = infos._address;
-        this.timeloop = infos._timeloop;
-        this.customfields = infos._customfields;
+        this.timeloop = infos._timeloop === undefined ? DEFAULT_TIMELOOP : infos._timeloop;
+        this.customfields = infos._customfields === undefined ? [] : infos._customfields;
     }
 
     fetchRSS() {
@@ -52,8 +55,8 @@ class ListenerRss {
 
         (async () => {
             while(this.loopRunning === true) {
-                callback(await this.fetchRSS());
-                await new Promise(res => setTimeout(res, this.timeloop * 1000));
+                this.fetchRSS().then((obj, err) => callback(obj, err))
+                await new Promise(res => setTimeout(res, 2000));
             }
         })();
     }