add test for problem

Author: haschek

src/components/Badge/Badge.test.tsx

@@ -0,0 +1,22 @@
+import React from "react";
+import { render } from "@testing-library/react";
+
+import "@testing-library/jest-dom";
+
+import { IconButton } from "../../../index";
+import { CLASSPREFIX as eccgui } from "../../configuration/constants";
+
+describe("Badge", () => {
+    it("should render badge markup with correct content when used on an icon button", () => {
+        const { container } = render(<IconButton name="item-info" badge={"badge content"} />);
+        const badge = container.querySelector(`.${eccgui}-badge`);
+        expect(badge).not.toBeNull();
+        expect(badge).toHaveTextContent("badge content");
+    });
+    it("should render badge markup with correct content when batch displays a 0 (zero) number on an icon button", () => {
+        const { container } = render(<IconButton name="item-info" badge={0} />);
+        const badge = container.querySelector(`.${eccgui}-badge`);
+        expect(badge).not.toBeNull();
+        expect(badge).toHaveTextContent("0");
+    });
+});