Add MapPage pagination and page-size selector; update Web-Design docs

frontend/src/pages/__tests__/MapPage.test.tsx

@@ -2,42 +2,43 @@ import { describe, expect, it, vi } from "vitest";
 import { render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 import { FluentProvider, webLightTheme } from "@fluentui/react-components";
+import { getLastArgs, setMapData } from "../../hooks/useMapData";
 import { MapPage } from "../MapPage";
 
-const mockFetchMapColorThresholds = vi.fn(async () => ({
-  threshold_low: 10,
-  threshold_medium: 50,
-  threshold_high: 100,
-}));
-
-let lastArgs: { range: string; origin: string } = { range: "", origin: "" };
-const mockUseMapData = vi.fn((range: string, origin: string) => {
-  lastArgs = { range, origin };
-  return {
+vi.mock("../../hooks/useMapData", () => {
+  let lastArgs: { range: string; origin: string } = { range: "", origin: "" };
+  let dataState = {
     countries: {},
     countryNames: {},
     bans: [],
     total: 0,
     loading: false,
     error: null,
-    refresh: vi.fn(),
+    refresh: () => {},
+  };
+
+  return {
+    useMapData: (range: string, origin: string) => {
+      lastArgs = { range, origin };
+      return { ...dataState };
+    },
+    setMapData: (newState: Partial<typeof dataState>) => {
+      dataState = { ...dataState, ...newState };
+    },
+    getLastArgs: () => lastArgs,
   };
 });
 
-vi.mock("../hooks/useMapData", () => ({
-  useMapData: (range: string, origin: string) => mockUseMapData(range, origin),
+vi.mock("../../api/config", () => ({
+  fetchMapColorThresholds: vi.fn(async () => ({
+    threshold_low: 10,
+    threshold_medium: 50,
+    threshold_high: 100,
+  })),
 }));
 
-vi.mock("../api/config", async () => ({
-  fetchMapColorThresholds: mockFetchMapColorThresholds,
-}));
-
-const mockWorldMap = vi.fn((_props: unknown) => <div data-testid="world-map" />);
-vi.mock("../components/WorldMap", () => ({
-  WorldMap: (props: unknown) => {
-    mockWorldMap(props);
-    return <div data-testid="world-map" />;
-  },
+vi.mock("../../components/WorldMap", () => ({
+  WorldMap: () => <div data-testid="world-map" />,
 }));
 
 describe("MapPage", () => {
@@ -51,17 +52,63 @@ describe("MapPage", () => {
     );
 
     // Initial load should call useMapData with default filters.
-    expect(lastArgs).toEqual({ range: "24h", origin: "all" });
-
-    // Map should receive country names from the hook so tooltips can show human-readable labels.
-    expect(mockWorldMap).toHaveBeenCalled();
-    const firstCallArgs = mockWorldMap.mock.calls[0]?.[0];
-    expect(firstCallArgs).toMatchObject({ countryNames: {} });
+    expect(getLastArgs()).toEqual({ range: "24h", origin: "all" });
 
     await user.click(screen.getByRole("button", { name: /Last 7 days/i }));
-    expect(lastArgs.range).toBe("7d");
+    expect(getLastArgs().range).toBe("7d");
 
     await user.click(screen.getByRole("button", { name: /Blocklist/i }));
-    expect(lastArgs.origin).toBe("blocklist");
+    expect(getLastArgs().origin).toBe("blocklist");
+  });
+
+  it("supports pagination with 100 items per page and reset on filter changes", async () => {
+    const user = userEvent.setup();
+
+    const bans = Array.from({ length: 120 }, (_, index) => ({
+      ip: `192.0.2.${index}`,
+      jail: "ssh",
+      banned_at: new Date(Date.now() - index * 1000).toISOString(),
+      service: null,
+      country_code: "US",
+      country_name: "United States",
+      asn: null,
+      org: null,
+      ban_count: 1,
+      origin: "selfblock",
+    }));
+
+    setMapData({
+      countries: { US: 120 },
+      countryNames: { US: "United States" },
+      bans,
+      total: 120,
+      loading: false,
+      error: null,
+    });
+
+    render(
+      <FluentProvider theme={webLightTheme}>
+        <MapPage />
+      </FluentProvider>,
+    );
+
+    expect(await screen.findByText(/Page 1 of 2/i)).toBeInTheDocument();
+    expect(screen.getByText(/Showing 100 of 120 filtered bans/i)).toBeInTheDocument();
+
+    await user.click(screen.getByRole("button", { name: /Next page/i }));
+    expect(await screen.findByText(/Page 2 of 2/i)).toBeInTheDocument();
+
+    await user.click(screen.getByRole("button", { name: /Previous page/i }));
+    expect(await screen.findByText(/Page 1 of 2/i)).toBeInTheDocument();
+
+    // Page size selector should adjust pagination
+    await user.selectOptions(screen.getByRole("combobox", { name: /Page size/i }), "25");
+    expect(await screen.findByText(/Page 1 of 5/i)).toBeInTheDocument();
+    expect(screen.getByText(/Showing 25 of 120 filtered bans/i)).toBeInTheDocument();
+
+    // Changing filter keeps page reset to 1
+    await user.click(screen.getByRole("button", { name: /Blocklist/i }));
+    expect(getLastArgs().origin).toBe("blocklist");
+    expect(await screen.findByText(/Page 1 of 5/i)).toBeInTheDocument();
   });
 });