diff --git a/src/widgets/overseerr/component.test.jsx b/src/widgets/overseerr/component.test.jsx
new file mode 100644
index 000000000..689f10aba
--- /dev/null
+++ b/src/widgets/overseerr/component.test.jsx
@@ -0,0 +1,60 @@
+// @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/overseerr/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "overseerr" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("overseerr.pending")).toBeInTheDocument();
+    expect(screen.getByText("overseerr.processing")).toBeInTheDocument();
+    expect(screen.getByText("overseerr.approved")).toBeInTheDocument();
+    expect(screen.getByText("overseerr.available")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "overseerr" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders request counts when loaded", () => {
+    useWidgetAPI.mockReturnValue({ data: { pending: 1, processing: 2, approved: 3, available: 4 }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "overseerr" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "overseerr.pending", 1);
+    expectBlockValue(container, "overseerr.processing", 2);
+    expectBlockValue(container, "overseerr.approved", 3);
+    expectBlockValue(container, "overseerr.available", 4);
+  });
+});
diff --git a/src/widgets/pangolin/component.test.jsx b/src/widgets/pangolin/component.test.jsx
new file mode 100644
index 000000000..791a25808
--- /dev/null
+++ b/src/widgets/pangolin/component.test.jsx
@@ -0,0 +1,124 @@
+// @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/pangolin/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("defaults fields to 4 entries and renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "pangolin" } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["sites", "resources", "targets", "traffic"]);
+    // Container filters by widget.fields, so only the default 4 blocks are visible.
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("pangolin.sites")).toBeInTheDocument();
+    expect(screen.getByText("pangolin.resources")).toBeInTheDocument();
+    expect(screen.getByText("pangolin.targets")).toBeInTheDocument();
+    expect(screen.getByText("pangolin.traffic")).toBeInTheDocument();
+    expect(screen.queryByText("pangolin.in")).toBeNull();
+    expect(screen.queryByText("pangolin.out")).toBeNull();
+  });
+
+  it("caps widget.fields at 4 entries", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "pangolin", fields: ["sites", "resources", "targets", "traffic", "extra"] } };
+    renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["sites", "resources", "targets", "traffic"]);
+  });
+
+  it("renders computed site/resource/target totals and traffic bytes", () => {
+    useWidgetAPI.mockImplementation((_widget, endpoint) => {
+      if (endpoint === "sites") {
+        return {
+          data: {
+            data: {
+              sites: [
+                { online: true, megabytesIn: 1, megabytesOut: 2 },
+                { online: false, megabytesIn: 3, megabytesOut: 4 },
+              ],
+            },
+          },
+          error: undefined,
+        };
+      }
+
+      if (endpoint === "resources") {
+        return {
+          data: {
+            data: {
+              resources: [
+                { targets: [{ healthStatus: "healthy" }, { healthStatus: "unhealthy" }] },
+                { targets: [] }, // counts as healthy
+              ],
+            },
+          },
+          error: undefined,
+        };
+      }
+
+      return { data: undefined, error: undefined };
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "pangolin" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    // sites: 1 / 2 online
+    expectBlockValue(container, "pangolin.sites", "1 / 2");
+    // resources: both healthy => 2 / 2
+    expectBlockValue(container, "pangolin.resources", "2 / 2");
+    // targets: 1 healthy out of 2 total
+    expectBlockValue(container, "pangolin.targets", "1 / 2");
+
+    // traffic bytes: (1+3) MB in + (2+4) MB out = 10MB => 10_000_000 bytes.
+    expectBlockValue(container, "pangolin.traffic", 10_000_000);
+    expect(findServiceBlockByLabel(container, "pangolin.in")).toBeUndefined();
+    expect(findServiceBlockByLabel(container, "pangolin.out")).toBeUndefined();
+  });
+
+  it("can show in/out traffic when selected via widget.fields", () => {
+    useWidgetAPI.mockImplementation((_widget, endpoint) => {
+      if (endpoint === "sites") {
+        return {
+          data: { data: { sites: [{ online: true, megabytesIn: 1, megabytesOut: 2 }] } },
+          error: undefined,
+        };
+      }
+
+      if (endpoint === "resources") {
+        return { data: { data: { resources: [] } }, error: undefined };
+      }
+
+      return { data: undefined, error: undefined };
+    });
+
+    const service = { widget: { type: "pangolin", fields: ["sites", "resources", "in", "out"] } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expectBlockValue(container, "pangolin.in", 1_000_000);
+    expectBlockValue(container, "pangolin.out", 2_000_000);
+  });
+});
diff --git a/src/widgets/paperlessngx/component.test.jsx b/src/widgets/paperlessngx/component.test.jsx
new file mode 100644
index 000000000..8df49f97e
--- /dev/null
+++ b/src/widgets/paperlessngx/component.test.jsx
@@ -0,0 +1,69 @@
+// @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/paperlessngx/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "paperlessngx" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expect(screen.getByText("paperlessngx.inbox")).toBeInTheDocument();
+    expect(screen.getByText("paperlessngx.total")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "paperlessngx" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders total and inbox when present", () => {
+    useWidgetAPI.mockReturnValue({ data: { documents_inbox: 2, documents_total: 10 }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "paperlessngx" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "paperlessngx.inbox", 2);
+    expectBlockValue(container, "paperlessngx.total", 10);
+  });
+
+  it("omits inbox block when documents_inbox is undefined", () => {
+    useWidgetAPI.mockReturnValue({ data: { documents_total: 10 }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "paperlessngx" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(findServiceBlockByLabel(container, "paperlessngx.inbox")).toBeUndefined();
+    expectBlockValue(container, "paperlessngx.total", 10);
+  });
+});
diff --git a/src/widgets/pfsense/component.test.jsx b/src/widgets/pfsense/component.test.jsx
new file mode 100644
index 000000000..dbfa08944
--- /dev/null
+++ b/src/widgets/pfsense/component.test.jsx
@@ -0,0 +1,76 @@
+// @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/pfsense/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders only optional blocks when widget.fields filters to wanIP + disk", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "pfsense", fields: ["wanIP", "disk"] } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    // Container filters children based on widget.fields.
+    expect(container.querySelectorAll(".service-block")).toHaveLength(2);
+    expect(screen.queryByText("pfsense.load")).toBeNull();
+    expect(screen.queryByText("pfsense.memory")).toBeNull();
+    expect(screen.queryByText("pfsense.temp")).toBeNull();
+    expect(screen.queryByText("pfsense.wanStatus")).toBeNull();
+    expect(screen.getByText("pfsense.wanIP")).toBeInTheDocument();
+    expect(screen.getByText("pfsense.disk")).toBeInTheDocument();
+  });
+
+  it("renders values for version 2 (systemv2/interfacev2)", () => {
+    useWidgetAPI.mockImplementation((_widget, endpoint) => {
+      if (endpoint === "systemv2") {
+        return {
+          data: {
+            data: {
+              cpu_load_avg: [0.5],
+              mem_usage: 12.3456,
+              disk_usage: 78.9,
+              temp_c: 40,
+            },
+          },
+          error: undefined,
+        };
+      }
+      if (endpoint === "interfacev2") {
+        return { data: { data: [{ hwif: "wan0", status: "up", ipaddr: "1.2.3.4" }] }, error: undefined };
+      }
+      return { data: undefined, error: undefined };
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "pfsense", version: 2, wan: "wan0" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expectBlockValue(container, "pfsense.load", "0.5");
+    expectBlockValue(container, "pfsense.memory", "12.35");
+    expectBlockValue(container, "pfsense.temp", "40");
+    expectBlockValue(container, "pfsense.wanStatus", "pfsense.up");
+    expect(findServiceBlockByLabel(container, "pfsense.wanIP")).toBeUndefined();
+    expect(findServiceBlockByLabel(container, "pfsense.disk")).toBeUndefined();
+  });
+});
diff --git a/src/widgets/photoprism/component.test.jsx b/src/widgets/photoprism/component.test.jsx
new file mode 100644
index 000000000..3f95f1f88
--- /dev/null
+++ b/src/widgets/photoprism/component.test.jsx
@@ -0,0 +1,62 @@
+// @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/photoprism/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "photoprism" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("photoprism.albums")).toBeInTheDocument();
+    expect(screen.getByText("photoprism.photos")).toBeInTheDocument();
+    expect(screen.getByText("photoprism.videos")).toBeInTheDocument();
+    expect(screen.getByText("photoprism.people")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "photoprism" } }} />, {
+      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: { albums: 1, photos: 2, videos: 3, people: 4 }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "photoprism" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "photoprism.albums", 1);
+    expectBlockValue(container, "photoprism.photos", 2);
+    expectBlockValue(container, "photoprism.videos", 3);
+    expectBlockValue(container, "photoprism.people", 4);
+  });
+});
diff --git a/src/widgets/plantit/component.test.jsx b/src/widgets/plantit/component.test.jsx
new file mode 100644
index 000000000..61502f8cf
--- /dev/null
+++ b/src/widgets/plantit/component.test.jsx
@@ -0,0 +1,63 @@
+// @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/plantit/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "plantit" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("plantit.events")).toBeInTheDocument();
+    expect(screen.getByText("plantit.plants")).toBeInTheDocument();
+    expect(screen.getByText("plantit.photos")).toBeInTheDocument();
+    expect(screen.getByText("plantit.species")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "plantit" } }} />, { 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: { diaryEntryCount: 1, plantCount: 2, imageCount: 3, botanicalInfoCount: 4 },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "plantit" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "plantit.events", 1);
+    expectBlockValue(container, "plantit.plants", 2);
+    expectBlockValue(container, "plantit.photos", 3);
+    expectBlockValue(container, "plantit.species", 4);
+  });
+});
diff --git a/src/widgets/plex/component.test.jsx b/src/widgets/plex/component.test.jsx
new file mode 100644
index 000000000..301d0b08b
--- /dev/null
+++ b/src/widgets/plex/component.test.jsx
@@ -0,0 +1,60 @@
+// @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/plex/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "plex" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("plex.streams")).toBeInTheDocument();
+    expect(screen.getByText("plex.albums")).toBeInTheDocument();
+    expect(screen.getByText("plex.movies")).toBeInTheDocument();
+    expect(screen.getByText("plex.tv")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "plex" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders plex unified counts when loaded", () => {
+    useWidgetAPI.mockReturnValue({ data: { streams: 1, albums: 2, movies: 3, tv: 4 }, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "plex" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "plex.streams", 1);
+    expectBlockValue(container, "plex.albums", 2);
+    expectBlockValue(container, "plex.movies", 3);
+    expectBlockValue(container, "plex.tv", 4);
+  });
+});
diff --git a/src/widgets/portainer/component.test.jsx b/src/widgets/portainer/component.test.jsx
new file mode 100644
index 000000000..49bb5b782
--- /dev/null
+++ b/src/widgets/portainer/component.test.jsx
@@ -0,0 +1,86 @@
+// @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/portainer/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("defaults fields for non-kubernetes and renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "portainer", kubernetes: false } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["running", "stopped", "total"]);
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("portainer.running")).toBeInTheDocument();
+    expect(screen.getByText("portainer.stopped")).toBeInTheDocument();
+    expect(screen.getByText("portainer.total")).toBeInTheDocument();
+  });
+
+  it("renders running/stopped/total when container list is loaded", () => {
+    useWidgetAPI.mockReturnValue({
+      data: [{ State: "running" }, { State: "running" }, { State: "exited" }],
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "portainer" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "portainer.running", 2);
+    expectBlockValue(container, "portainer.stopped", 1);
+    expectBlockValue(container, "portainer.total", 3);
+  });
+
+  it("renders kubernetes placeholders when enabled", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const service = { widget: { type: "portainer", kubernetes: true } };
+    const { container } = renderWithProviders(<Component service={service} />, { settings: { hideErrors: false } });
+
+    expect(service.widget.fields).toEqual(["applications", "services", "namespaces"]);
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("portainer.applications")).toBeInTheDocument();
+    expect(screen.getByText("portainer.services")).toBeInTheDocument();
+    expect(screen.getByText("portainer.namespaces")).toBeInTheDocument();
+  });
+
+  it("renders kubernetes counts when loaded", () => {
+    useWidgetAPI.mockImplementation((_widget, endpoint) => {
+      if (endpoint === "kubernetes/applications") return { data: 1, error: undefined };
+      if (endpoint === "kubernetes/services") return { data: 2, error: undefined };
+      if (endpoint === "kubernetes/namespaces") return { data: 3, error: undefined };
+      // container count isn't used in kubernetes mode (endpoint = "" => url null)
+      return { data: undefined, error: undefined };
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "portainer", kubernetes: true } }} />,
+      {
+        settings: { hideErrors: false },
+      },
+    );
+
+    expectBlockValue(container, "portainer.applications", 1);
+    expectBlockValue(container, "portainer.services", 2);
+    expectBlockValue(container, "portainer.namespaces", 3);
+  });
+});
diff --git a/src/widgets/prometheus/component.test.jsx b/src/widgets/prometheus/component.test.jsx
new file mode 100644
index 000000000..f714f653c
--- /dev/null
+++ b/src/widgets/prometheus/component.test.jsx
@@ -0,0 +1,63 @@
+// @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/prometheus/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "prometheus" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(3);
+    expect(screen.getByText("prometheus.targets_up")).toBeInTheDocument();
+    expect(screen.getByText("prometheus.targets_down")).toBeInTheDocument();
+    expect(screen.getByText("prometheus.targets_total")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "prometheus" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders up/down/total counts from activeTargets", () => {
+    useWidgetAPI.mockReturnValue({
+      data: { data: { activeTargets: [{ health: "up" }, { health: "down" }, { health: "up" }] } },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "prometheus" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "prometheus.targets_up", 2);
+    expectBlockValue(container, "prometheus.targets_down", 1);
+    expectBlockValue(container, "prometheus.targets_total", 3);
+  });
+});
diff --git a/src/widgets/prowlarr/component.test.jsx b/src/widgets/prowlarr/component.test.jsx
new file mode 100644
index 000000000..b9111a5db
--- /dev/null
+++ b/src/widgets/prowlarr/component.test.jsx
@@ -0,0 +1,68 @@
+// @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/prowlarr/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders placeholders while loading", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "prowlarr" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("prowlarr.numberOfGrabs")).toBeInTheDocument();
+    expect(screen.getByText("prowlarr.numberOfQueries")).toBeInTheDocument();
+    expect(screen.getByText("prowlarr.numberOfFailGrabs")).toBeInTheDocument();
+    expect(screen.getByText("prowlarr.numberOfFailQueries")).toBeInTheDocument();
+  });
+
+  it("renders error UI when endpoint errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "prowlarr" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("sums grabs/queries and failed counts across indexers", () => {
+    useWidgetAPI.mockReturnValue({
+      data: {
+        indexers: [
+          { numberOfGrabs: 1, numberOfQueries: 2, numberOfFailedGrabs: 3, numberOfFailedQueries: 4 },
+          { numberOfGrabs: 10, numberOfQueries: 20, numberOfFailedGrabs: 30, numberOfFailedQueries: 40 },
+        ],
+      },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(<Component service={{ widget: { type: "prowlarr" } }} />, {
+      settings: { hideErrors: false },
+    });
+
+    expectBlockValue(container, "prowlarr.numberOfGrabs", 11);
+    expectBlockValue(container, "prowlarr.numberOfQueries", 22);
+    expectBlockValue(container, "prowlarr.numberOfFailGrabs", 33);
+    expectBlockValue(container, "prowlarr.numberOfFailQueries", 44);
+  });
+});