diff --git a/src/listener-rss.ts b/src/listener-rss.ts
index c57de80..9258ef7 100644
--- a/src/listener-rss.ts
+++ b/src/listener-rss.ts
@@ -13,11 +13,18 @@ export class ListenerRss {
   parser: Parser | undefined = undefined;
   loopRunning: boolean = false;
 
+  /**
+   * @brief constructor
+   * @param config ListenerRSSInfos interface who's contain the ListenerInfos
+   */
   constructor(config: ListenerInfo) {
     this.setData(config);
     this.setParser();
   }
 
+  /**
+   * @brief Private function. Is useed to initilize the parser object with the customfields var
+   */
   setParser() {
     // set parser
     this.parser = new Parser(
@@ -34,6 +41,10 @@ export class ListenerRss {
     ); // if customfield is set -> let's set the parser with, else let the option empty
   }
 
+  /**
+   * @brief Private function. Initialized the listener with an ListenerRSSInfos interface
+   * @param infos ListenerRSSInfos interface who's contain the ListenerInfos
+   */
   setData(infos: ListenerInfo) {
     // Set data
     this.name = infos.name;
@@ -43,8 +54,11 @@ export class ListenerRss {
     this.customfields = infos.customfields;
   }
 
-  fetchRSS(): Promise<any> {
-    // TODO Pas Bien
+  /**
+   * @brief use the parseURL function from rss-parser with the objects datas
+   * @return return a promise with the received data
+   */
+  fetchRSS(): Promise<Parser.Output<any>> {
     if (this.parser !== undefined && this.address !== undefined) {
       return this.parser.parseURL(this.address).catch((err) => {
         throw new Error("bad address or no access : " + err);
@@ -61,26 +75,27 @@ export class ListenerRss {
       obj: { [key: string]: any } | undefined,
       err: Error | undefined
     ) => void
-  ) {
+  ): void {
     this.loopRunning = true;
 
-    const fun = () => {
+    const fun: () => void = () => {
       this.fetchRSS()
         .then((obj: { [key: string]: any }) => callback(obj, undefined))
         .catch((err) => callback(undefined, err));
     };
-    let fun_loop = () => {
-      fun();
-      console.log("while");
-      if (this.loopRunning) setTimeout(fun_loop, this.timeloop * 1000);
-    };
-    fun_loop();
+
+    (async () => {
+      while (this.loopRunning) {
+        await fun();
+        await new Promise((res) => setTimeout(res, this.timeloop * 1000));
+      }
+    })();
   }
 
   /**
    * @brief stop the async function
    */
-  stop() {
+  stop(): void {
     this.loopRunning = false;
   }
 }
diff --git a/tests/index-spec.ts b/tests/index-spec.ts
index 36ce5ed..98bab4c 100644
--- a/tests/index-spec.ts
+++ b/tests/index-spec.ts
@@ -34,8 +34,9 @@ describe("test class RSS: jsonfile", function () {
   let stubListener: sinon.StubbedInstance<Listeners>;
   let stubParser: sinon.StubbedInstance<Parser>;
 
-  const mockedRSSOutput: any = {
-    // TODO any = pas bien
+  const mockedRSSOutput: Parser.Output<{
+    "media:group": { [key: string]: string | [any] };
+  }> = {
     items: [
       {
         title: "my title 00",
@@ -96,7 +97,7 @@ describe("test class RSS: jsonfile", function () {
         }
       });
       stubListener.setParser();
-      stubListener.fetchRSS.resolves(stubParser.parseURL(stubListener.address));
+      stubListener.fetchRSS.returns(stubParser.parseURL(stubListener.address));
     } else throw new Error("myListener need to be initiliaze before the stub");
   };