diff --git a/src/widgets/gitea/component.test.jsx b/src/widgets/gitea/component.test.jsx
new file mode 100644
index 000000000..c54267677
--- /dev/null
+++ b/src/widgets/gitea/component.test.jsx
@@ -0,0 +1,75 @@
+// @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/gitea/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // notifications
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // issues
+      .mockReturnValueOnce({ data: undefined, error: undefined }); // repositories
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gitea", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("gitea.notifications")).toBeInTheDocument();
+    expect(screen.getByText("gitea.issues")).toBeInTheDocument();
+    expect(screen.getByText("gitea.pulls")).toBeInTheDocument();
+    expect(screen.getByText("gitea.repositories")).toBeInTheDocument();
+    expect(screen.getAllByText("-")).toHaveLength(4);
+  });
+
+  it("renders error UI when any endpoint errors", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined })
+      .mockReturnValueOnce({ data: undefined, error: { message: "nope" } })
+      .mockReturnValueOnce({ data: undefined, error: undefined });
+
+    renderWithProviders(<Component service={{ widget: { type: "gitea", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders computed counts when loaded", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: [{ id: 1 }, { id: 2 }], error: undefined })
+      .mockReturnValueOnce({
+        data: { issues: [{ id: 1 }], pulls: [{ id: 1 }, { id: 2 }, { id: 3 }] },
+        error: undefined,
+      })
+      .mockReturnValueOnce({ data: { data: [{ id: 1 }] }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gitea", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "gitea.notifications", 2);
+    expectBlockValue(container, "gitea.issues", 1);
+    expectBlockValue(container, "gitea.pulls", 3);
+    expectBlockValue(container, "gitea.repositories", 1);
+  });
+});
diff --git a/src/widgets/gitlab/component.test.jsx b/src/widgets/gitlab/component.test.jsx
new file mode 100644
index 000000000..f19cbf3bc
--- /dev/null
+++ b/src/widgets/gitlab/component.test.jsx
@@ -0,0 +1,66 @@
+// @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/gitlab/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gitlab", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("gitlab.groups")).toBeInTheDocument();
+    expect(screen.getByText("gitlab.issues")).toBeInTheDocument();
+    expect(screen.getByText("gitlab.merges")).toBeInTheDocument();
+    expect(screen.getByText("gitlab.projects")).toBeInTheDocument();
+    expect(screen.getAllByText("-")).toHaveLength(4);
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "gitlab", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders counts when loaded", () => {
+    useWidgetAPI.mockReturnValue({
+      data: { groups_count: 1, issues_count: 2, merge_requests_count: 3, projects_count: 4 },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gitlab", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "gitlab.groups", 1);
+    expectBlockValue(container, "gitlab.issues", 2);
+    expectBlockValue(container, "gitlab.merges", 3);
+    expectBlockValue(container, "gitlab.projects", 4);
+  });
+});
diff --git a/src/widgets/glances/component.test.jsx b/src/widgets/glances/component.test.jsx
new file mode 100644
index 000000000..dabe779c2
--- /dev/null
+++ b/src/widgets/glances/component.test.jsx
@@ -0,0 +1,59 @@
+// @vitest-environment jsdom
+
+import { screen } from "@testing-library/react";
+import { describe, expect, it, vi } from "vitest";
+
+import { renderWithProviders } from "test-utils/render-with-providers";
+
+vi.mock("./metrics/info", () => ({ default: () => <div>glances-info</div> }));
+vi.mock("./metrics/memory", () => ({ default: () => <div>glances-memory</div> }));
+vi.mock("./metrics/process", () => ({ default: () => <div>glances-process</div> }));
+vi.mock("./metrics/containers", () => ({ default: () => <div>glances-containers</div> }));
+vi.mock("./metrics/cpu", () => ({ default: () => <div>glances-cpu</div> }));
+vi.mock("./metrics/net", () => ({ default: () => <div>glances-net</div> }));
+vi.mock("./metrics/sensor", () => ({ default: () => <div>glances-sensor</div> }));
+vi.mock("./metrics/disk", () => ({ default: () => <div>glances-disk</div> }));
+vi.mock("./metrics/gpu", () => ({ default: () => <div>glances-gpu</div> }));
+vi.mock("./metrics/fs", () => ({ default: () => <div>glances-fs</div> }));
+
+import Component from "./component";
+
+describe("widgets/glances/component", () => {
+  it("routes metric=info to Info", () => {
+    renderWithProviders(<Component service={{ widget: { type: "glances", metric: "info" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getByText("glances-info")).toBeInTheDocument();
+  });
+
+  it("routes metric=cpu to Cpu", () => {
+    renderWithProviders(<Component service={{ widget: { type: "glances", metric: "cpu" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getByText("glances-cpu")).toBeInTheDocument();
+  });
+
+  it("routes metric patterns (network:, sensor:, disk:, gpu:, fs:) to their modules", () => {
+    const { rerender } = renderWithProviders(
+      <Component service={{ widget: { type: "glances", metric: "network:eth0" } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+    expect(screen.getByText("glances-net")).toBeInTheDocument();
+
+    rerender(<Component service={{ widget: { type: "glances", metric: "sensor:temp" } }} />);
+    expect(screen.getByText("glances-sensor")).toBeInTheDocument();
+
+    rerender(<Component service={{ widget: { type: "glances", metric: "disk:sda" } }} />);
+    expect(screen.getByText("glances-disk")).toBeInTheDocument();
+
+    rerender(<Component service={{ widget: { type: "glances", metric: "gpu:nvidia" } }} />);
+    expect(screen.getByText("glances-gpu")).toBeInTheDocument();
+
+    rerender(<Component service={{ widget: { type: "glances", metric: "fs:/" } }} />);
+    expect(screen.getByText("glances-fs")).toBeInTheDocument();
+  });
+});
diff --git a/src/widgets/gluetun/component.test.jsx b/src/widgets/gluetun/component.test.jsx
new file mode 100644
index 000000000..0e6c1b35a
--- /dev/null
+++ b/src/widgets/gluetun/component.test.jsx
@@ -0,0 +1,75 @@
+// @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/gluetun/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("defaults fields and filters to 3 blocks while loading (no port_forwarded)", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "gluetun", url: "http://x" } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["public_ip", "region", "country"]);
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("gluetun.public_ip")).toBeInTheDocument();
+    expect(screen.getByText("gluetun.region")).toBeInTheDocument();
+    expect(screen.getByText("gluetun.country")).toBeInTheDocument();
+    expect(screen.queryByText("gluetun.port_forwarded")).toBeNull();
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "gluetun", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("includes port_forwarded and uses the v2 endpoint when widget.version > 1", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: { public_ip: "1.2.3.4", region: "CA", country: "US" }, error: undefined })
+      .mockReturnValueOnce({ data: { port: 12345 }, error: undefined });
+
+    const service = {
+      widget: {
+        type: "gluetun",
+        url: "http://x",
+        version: 2,
+        fields: ["public_ip", "region", "country", "port_forwarded"],
+      },
+    };
+
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(useWidgetAPI.mock.calls[0][1]).toBe("ip");
+    expect(useWidgetAPI.mock.calls[1][1]).toBe("port_forwarded_v2");
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expectBlockValue(container, "gluetun.public_ip", "1.2.3.4");
+    expectBlockValue(container, "gluetun.region", "CA");
+    expectBlockValue(container, "gluetun.country", "US");
+    expectBlockValue(container, "gluetun.port_forwarded", 12345);
+  });
+});
diff --git a/src/widgets/gotify/component.test.jsx b/src/widgets/gotify/component.test.jsx
new file mode 100644
index 000000000..b83f7cc4e
--- /dev/null
+++ b/src/widgets/gotify/component.test.jsx
@@ -0,0 +1,70 @@
+// @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/gotify/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // application
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // message
+      .mockReturnValueOnce({ data: undefined, error: undefined }); // client
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gotify", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("gotify.apps")).toBeInTheDocument();
+    expect(screen.getByText("gotify.clients")).toBeInTheDocument();
+    expect(screen.getByText("gotify.messages")).toBeInTheDocument();
+    expect(screen.getAllByText("-")).toHaveLength(3);
+  });
+
+  it("renders error UI when any endpoint errors", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined })
+      .mockReturnValueOnce({ data: undefined, error: { message: "nope" } })
+      .mockReturnValueOnce({ data: undefined, error: undefined });
+
+    renderWithProviders(<Component service={{ widget: { type: "gotify", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders computed counts when loaded", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: [{ id: 1 }, { id: 2 }], error: undefined })
+      .mockReturnValueOnce({ data: { messages: [{ id: 1 }] }, error: undefined })
+      .mockReturnValueOnce({ data: [{ id: 1 }, { id: 2 }, { id: 3 }], error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "gotify", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "gotify.apps", 2);
+    expectBlockValue(container, "gotify.clients", 3);
+    expectBlockValue(container, "gotify.messages", 1);
+  });
+});
diff --git a/src/widgets/grafana/component.test.jsx b/src/widgets/grafana/component.test.jsx
new file mode 100644
index 000000000..30e39c1ea
--- /dev/null
+++ b/src/widgets/grafana/component.test.jsx
@@ -0,0 +1,95 @@
+// @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/grafana/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading (stats missing)", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // stats
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // alerts
+      .mockReturnValueOnce({ data: undefined, error: undefined }); // grafana
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "grafana", url: "http://x" } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("grafana.dashboards")).toBeInTheDocument();
+    expect(screen.getByText("grafana.datasources")).toBeInTheDocument();
+    expect(screen.getByText("grafana.totalalerts")).toBeInTheDocument();
+    expect(screen.getByText("grafana.alertstriggered")).toBeInTheDocument();
+  });
+
+  it("computes triggered alerts for v1 from alert state=alerting", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: { dashboards: 1, datasources: 2, alerts: 3 }, error: undefined }) // stats
+      .mockReturnValueOnce(
+        {
+          data: [{ state: "ok" }, { state: "alerting" }, { state: "alerting" }],
+          error: undefined,
+        }, // alerts
+      )
+      .mockReturnValueOnce({ data: [{ id: 1 }], error: undefined }); // grafana (unused)
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "grafana", url: "http://x", version: 1 } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expectBlockValue(container, "grafana.dashboards", 1);
+    expectBlockValue(container, "grafana.datasources", 2);
+    expectBlockValue(container, "grafana.totalalerts", 3);
+    expectBlockValue(container, "grafana.alertstriggered", 2);
+  });
+
+  it("falls back to the secondary endpoint for v1 when the primary alerts endpoint errors", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: { dashboards: 0, datasources: 0, alerts: 0 }, error: undefined }) // stats
+      .mockReturnValueOnce({ data: undefined, error: { message: "primary down" } }) // alerts
+      .mockReturnValueOnce({ data: [{ id: 1 }, { id: 2 }, { id: 3 }], error: undefined }); // grafana
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "grafana", url: "http://x", version: 1 } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    // Should not error if only the primary endpoint failed.
+    expect(screen.queryAllByText(/widget\.api_error/i)).toHaveLength(0);
+    expectBlockValue(container, "grafana.alertstriggered", 3);
+  });
+
+  it("uses the configured alerts endpoint for v2 and counts all returned alerts", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: { dashboards: 9, datasources: 8, alerts: 7 }, error: undefined }) // stats
+      .mockReturnValueOnce({ data: [{ id: 1 }, { id: 2 }], error: undefined }) // primary (custom)
+      .mockReturnValueOnce({ data: undefined, error: undefined }); // secondary (disabled)
+
+    const service = { widget: { type: "grafana", url: "http://x", version: 2, alerts: "custom" } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(useWidgetAPI.mock.calls[1][1]).toBe("custom");
+    expectBlockValue(container, "grafana.alertstriggered", 2);
+  });
+});
diff --git a/src/widgets/hdhomerun/component.test.jsx b/src/widgets/hdhomerun/component.test.jsx
new file mode 100644
index 000000000..7f4ef5452
--- /dev/null
+++ b/src/widgets/hdhomerun/component.test.jsx
@@ -0,0 +1,80 @@
+// @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/hdhomerun/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({ data: undefined, error: undefined }) // lineup
+      .mockReturnValueOnce({ data: undefined, error: undefined }); // status
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "hdhomerun", url: "http://x" } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expect(screen.getByText("hdhomerun.channels")).toBeInTheDocument();
+    expect(screen.getByText("hdhomerun.hd")).toBeInTheDocument();
+    expect(screen.getAllByText("-")).toHaveLength(2);
+  });
+
+  it("caps widget.fields at 4 and filters blocks accordingly", () => {
+    useWidgetAPI
+      .mockReturnValueOnce({
+        data: [{ HD: 1 }, { HD: 0 }, { HD: 1 }],
+        error: undefined,
+      })
+      .mockReturnValueOnce({
+        data: [
+          { VctNumber: "5.1", VctName: "ABC", SignalStrengthPercent: 90 },
+          { VctNumber: null, VctName: null, SignalStrengthPercent: null },
+        ],
+        error: undefined,
+      });
+
+    const service = {
+      widget: {
+        type: "hdhomerun",
+        url: "http://x",
+        fields: ["channels", "hd", "tunerCount", "channelNumber", "signalStrength"],
+      },
+    };
+
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["channels", "hd", "tunerCount", "channelNumber"]);
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("hdhomerun.channels")).toBeInTheDocument();
+    expect(screen.getByText("hdhomerun.hd")).toBeInTheDocument();
+    expect(screen.getByText("hdhomerun.tunerCount")).toBeInTheDocument();
+    expect(screen.getByText("hdhomerun.channelNumber")).toBeInTheDocument();
+    expect(screen.queryByText("hdhomerun.signalStrength")).toBeNull();
+
+    expectBlockValue(container, "hdhomerun.channels", 3);
+    expectBlockValue(container, "hdhomerun.hd", 2);
+    expectBlockValue(container, "hdhomerun.tunerCount", "1 / 2");
+    expectBlockValue(container, "hdhomerun.channelNumber", "5.1");
+  });
+});
diff --git a/src/widgets/headscale/component.test.jsx b/src/widgets/headscale/component.test.jsx
new file mode 100644
index 000000000..39715ec1f
--- /dev/null
+++ b/src/widgets/headscale/component.test.jsx
@@ -0,0 +1,78 @@
+// @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/headscale/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "headscale", url: "http://x" } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("headscale.name")).toBeInTheDocument();
+    expect(screen.getByText("headscale.address")).toBeInTheDocument();
+    expect(screen.getByText("headscale.last_seen")).toBeInTheDocument();
+    expect(screen.getByText("headscale.status")).toBeInTheDocument();
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "headscale", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders node details when loaded", () => {
+    useWidgetAPI.mockReturnValue({
+      data: {
+        node: {
+          givenName: "node1",
+          ipAddresses: ["100.64.0.1"],
+          lastSeen: 123,
+          online: true,
+        },
+      },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "headscale", url: "http://x" } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+
+    expectBlockValue(container, "headscale.name", "node1");
+    expectBlockValue(container, "headscale.address", "100.64.0.1");
+    expectBlockValue(container, "headscale.last_seen", 123);
+    expectBlockValue(container, "headscale.status", "headscale.online");
+  });
+});
diff --git a/src/widgets/healthchecks/component.test.jsx b/src/widgets/healthchecks/component.test.jsx
new file mode 100644
index 000000000..92a11f105
--- /dev/null
+++ b/src/widgets/healthchecks/component.test.jsx
@@ -0,0 +1,82 @@
+// @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/healthchecks/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "healthchecks", url: "http://x" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expect(screen.getByText("healthchecks.status")).toBeInTheDocument();
+    expect(screen.getByText("healthchecks.last_ping")).toBeInTheDocument();
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "healthchecks", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders up/down counts when widget.uuid is not set", () => {
+    useWidgetAPI.mockReturnValue({
+      data: {
+        checks: [{ status: "up" }, { status: "down" }, { status: "up" }, { status: "paused" }],
+      },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "healthchecks", url: "http://x" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expectBlockValue(container, "healthchecks.up", 2);
+    expectBlockValue(container, "healthchecks.down", 1);
+  });
+
+  it("renders status and never when widget.uuid is set but last_ping is missing", () => {
+    useWidgetAPI.mockReturnValue({
+      data: { status: "up", last_ping: null, checks: [] },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "healthchecks", url: "http://x", uuid: "abc" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expectBlockValue(container, "healthchecks.status", "healthchecks.up");
+    expectBlockValue(container, "healthchecks.last_ping", "healthchecks.never");
+  });
+});
diff --git a/src/widgets/homeassistant/component.test.jsx b/src/widgets/homeassistant/component.test.jsx
new file mode 100644
index 000000000..97d26db57
--- /dev/null
+++ b/src/widgets/homeassistant/component.test.jsx
@@ -0,0 +1,47 @@
+// @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/homeassistant/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "homeassistant", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders blocks returned from the API", () => {
+    useWidgetAPI.mockReturnValue({
+      data: [
+        { label: "ha.temp", value: "72" },
+        { label: "ha.mode", value: "cool" },
+      ],
+      error: undefined,
+    });
+
+    renderWithProviders(<Component service={{ widget: { type: "homeassistant", url: "http://x" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getByText("ha.temp")).toBeInTheDocument();
+    expect(screen.getByText("72")).toBeInTheDocument();
+    expect(screen.getByText("ha.mode")).toBeInTheDocument();
+    expect(screen.getByText("cool")).toBeInTheDocument();
+  });
+});