Merge branch 'master' into fix-1448-discord-service-url

test/backend.spec.js

@@ -229,3 +229,25 @@ describe("Test Discord Notification Provider", () => {
         );
     });
 });
+
+describe("The function filterAndJoin", () => {
+    it("should join and array of strings to one string", () => {
+        const result = utilServerRewire.filterAndJoin(["one", "two", "three"]);
+        expect(result).toBe("onetwothree");
+    });
+
+    it("should join strings using a given connector", () => {
+        const result = utilServerRewire.filterAndJoin(["one", "two", "three"], "-");
+        expect(result).toBe("one-two-three");
+    });
+
+    it("should filter null, undefined and empty strings before joining", () => {
+        const result = utilServerRewire.filterAndJoin([undefined, "", "three"], "--");
+        expect(result).toBe("three");
+    });
+
+    it("should return an empty string if all parts are filtered out", () => {
+        const result = utilServerRewire.filterAndJoin([undefined, "", ""], "--");
+        expect(result).toBe("");
+    });
+});