Add some more tests

src/widgets/kopia/component.test.jsx

@@ -0,0 +1,83 @@
+// @vitest-environment jsdom
+
+import { screen } from "@testing-library/react";
+import { afterEach, 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/kopia/component", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2020-01-01T00:00:00Z"));
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it("renders placeholders when status data is missing or source filter finds nothing", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: undefined });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "kopia", snapshotHost: "nope" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expect(container.querySelectorAll(".service-block")).toHaveLength(4);
+    expect(screen.getByText("kopia.status")).toBeInTheDocument();
+    expect(screen.getByText("kopia.size")).toBeInTheDocument();
+    expect(screen.getByText("kopia.lastrun")).toBeInTheDocument();
+    expect(screen.getByText("kopia.nextrun")).toBeInTheDocument();
+  });
+
+  it("renders error UI when widget API errors", () => {
+    useWidgetAPI.mockReturnValue({ data: undefined, error: { message: "nope" } });
+
+    renderWithProviders(<Component service={{ widget: { type: "kopia" } }} />, { settings: { hideErrors: false } });
+
+    expect(screen.getAllByText(/widget\.api_error/i).length).toBeGreaterThan(0);
+    expect(screen.getByText("nope")).toBeInTheDocument();
+  });
+
+  it("renders filtered snapshot status, size, and relative last/next run times", () => {
+    useWidgetAPI.mockReturnValue({
+      data: {
+        sources: [
+          {
+            source: { host: "hostA", path: "/data" },
+            status: "OK",
+            lastSnapshot: {
+              startTime: "2019-12-31T22:00:00Z", // 2 hours ago
+              stats: { errorCount: 0, totalSize: 1024 },
+            },
+            nextSnapshotTime: "2020-01-01T00:30:00Z", // 30 minutes ahead
+          },
+        ],
+      },
+      error: undefined,
+    });
+
+    const { container } = renderWithProviders(
+      <Component service={{ widget: { type: "kopia", snapshotHost: "hostA", snapshotPath: "/data" } }} />,
+      { settings: { hideErrors: false } },
+    );
+
+    expectBlockValue(container, "kopia.status", "OK");
+    expectBlockValue(container, "kopia.size", 1024);
+    expectBlockValue(container, "kopia.lastrun", "2 h");
+    expectBlockValue(container, "kopia.nextrun", "30 m");
+  });
+});