Add widget component tests (netdata..opnsense)

src/widgets/nextdns/component.test.jsx

@@ -0,0 +1,53 @@
+// @vitest-environment jsdom
+
+import { screen } from "@testing-library/react";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import { renderWithProviders } from "test-utils/render-with-providers";
+
+const { useWidgetAPI } = vi.hoisted(() => ({ useWidgetAPI: vi.fn() }));
+vi.mock("utils/proxy/use-widget-api", () => ({ default: useWidgetAPI }));
+
+import Component from "./component";
+
+describe("widgets/nextdns/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders waiting status while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    renderWithProviders(<Component service={{ widget: { type: "nextdns" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getByText("widget.status")).toBeInTheDocument();
+    expect(screen.getByText("nextdns.wait")).toBeInTheDocument();
+  });
+
+  it("renders no-devices status when data array is empty", () => {
+    useWidgetAPI.mockReturnValue({ data: { data: [] }, error: undefined });
+
+    renderWithProviders(<Component service={{ widget: { type: "nextdns" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getByText("nextdns.no_devices")).toBeInTheDocument();
+  });
+
+  it("renders a block per device status with query counts", () => {
+    useWidgetAPI.mockReturnValue({
+      data: {
+        data: [
+          { status: "nextdns.active", queries: 10 },
+          { status: "nextdns.offline", queries: 2 },
+        ],
+      },
+      error: undefined,
+    });
+
+    renderWithProviders(<Component service={{ widget: { type: "nextdns" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getByText("nextdns.active")).toBeInTheDocument();
+    expect(screen.getByText("nextdns.offline")).toBeInTheDocument();
+    expect(screen.getByText("10")).toBeInTheDocument();
+    expect(screen.getByText("2")).toBeInTheDocument();
+  });
+});