Add widget component tests (scrutiny..tailscale)

src/widgets/strelaysrv/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";
+import { findServiceBlockByLabel } from "test-utils/widget-assertions";
+
+const { useWidgetAPI } = vi.hoisted(() => ({ useWidgetAPI: vi.fn() }));
+vi.mock("utils/proxy/use-widget-api", () => ({ default: useWidgetAPI }));
+
+import Component from "./component";
+
+function expectBlockValue(container, label, value) {
+  const block = findServiceBlockByLabel(container, label);
+  expect(block, `missing block for ${label}`).toBeTruthy();
+  expect(block.textContent).toContain(String(value));
+}
+
+describe("widgets/strelaysrv/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "strelaysrv" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("strelaysrv.numActiveSessions")).toBeInTheDocument();
+    expect(screen.getByText("strelaysrv.numConnections")).toBeInTheDocument();
+    expect(screen.getByText("strelaysrv.bytesProxied")).toBeInTheDocument();
+  });
+
+  it("renders metrics when loaded", () => {
+    useWidgetAPI.mockReturnValue({
+      data: { numActiveSessions: 1, numConnections: 2, bytesProxied: 3, kbps10s1m5m15m30m60m: [0, 0, 0, 0, 0, 123] },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "strelaysrv" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "strelaysrv.numActiveSessions", 1);
+    expectBlockValue(container, "strelaysrv.numConnections", 2);
+    expectBlockValue(container, "strelaysrv.dataRelayed", 3);
+    expectBlockValue(container, "strelaysrv.transferRate", 123);
+  });
+});