Merge 345423715f76ac991e6a7176aecb5fbea882633c into f0323731dd3007c65a5cf940837ab41d96ddc940

web/components/ui/Statusbar/Statusbar.tsx

@@ -18,8 +18,9 @@ export type StatusbarProps = {
   className?: string;
 };
 
-function makeDurationString(lastConnectTime: Date): string {
+export function makeDurationString(lastConnectTime: Date): string {
   const diff = intervalToDuration({ start: lastConnectTime, end: new Date() });
+  
   if (diff.days >= 1) {
     return formatDuration({
       days: diff.days,

web/tests/statusbar.test.ts

@@ -0,0 +1,27 @@
+import { makeDurationString } from "../components/ui/Statusbar/Statusbar";
+
+// Testing the string displayed on the statusbar
+describe('testStatusbar', () => {
+    test('function should return a string', () => {
+        const typeResult = makeDurationString(new Date(2005, 0, 24));
+        expect(typeof typeResult).toBe('string');
+    });
+
+    test('function should not return a string that contains undefined', () => {
+        let count = 0;
+        while (count < 100) {
+            const result = makeDurationString(randomDate);
+            expect(result).not.toContain("undefined");
+            count++;
+        }
+    });
+});
+
+const randomDate = getRandomDate(Date.now()-30, Date.now(), 0, 24);
+
+function getRandomDate(start, end, startHour, endHour): Date {
+    var date = new Date(+start + Math.random() * (end - start));
+    var hour = startHour + Math.random() * (endHour - startHour) | 0;
+    date.setHours(hour);
+    return date;
+  }