Chore: homepage tests (#6278)

src/widgets/esphome/component.test.jsx

@@ -0,0 +1,57 @@
+// @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/esphome/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("defaults fields and filters placeholders to 4 blocks while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "esphome" } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["online", "offline", "offline_alt", "total"]);
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("esphome.online")).toBeInTheDocument();
+    expect(screen.getByText("esphome.offline")).toBeInTheDocument();
+    expect(screen.getByText("esphome.offline_alt")).toBeInTheDocument();
+    expect(screen.getByText("esphome.total")).toBeInTheDocument();
+    expect(screen.queryByText("esphome.unknown")).toBeNull();
+  });
+
+  it("computes online/offline/unknown and filters to default fields", () => {
+    useWidgetAPI.mockReturnValue({
+      data: { a: true, b: false, c: null },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "esphome" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expectBlockValue(container, "esphome.online", 1);
+    expectBlockValue(container, "esphome.offline", 1);
+    // offline_alt is count of not-true, i.e. false+null = 2
+    expectBlockValue(container, "esphome.offline_alt", 2);
+    expectBlockValue(container, "esphome.total", 3);
+  });
+});

src/widgets/esphome/widget.test.js

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+import { describe, it } from "vitest";
+
+import { expectWidgetConfigShape } from "test-utils/widget-config";
+
+import widget from "./widget";
+
+describe("esphome widget config", () => {
+  it("exports a valid widget config", () => {
+    expectWidgetConfigShape(widget);
+  });
+});