Files
gitmost/apps/client/src/features/page/components/breadcrumbs/breadcrumb-path-equal.test.ts
T
agent_coder 6e59793643 fix(#344 review F1-F4): test-mock coverage + getSpaces freshness + comment/test fixes
- F1 [blocking]: share-modal.test.tsx + comment-content-view.test.tsx mocked
  page-query without usePageMetaQuery → 3 tests threw (ShareModal uses it
  directly, comment-content-view via MentionContent). Added usePageMetaQuery to
  both mocks (the space-tree mocks were already fixed; these two were missed).
- F2: restored refetchOnMount:true on useGetSpacesQuery — ["spaces"] is
  invalidated only by same-tab mutations (no socket path), so a cross-actor
  change (an admin adding/removing THIS user from a space) left the list stale
  until a hard reload. The other refetchOnMount removals (favorites/watched —
  per-user, same-tab-only gap) stay removed.
- F3: corrected the trash-list + recent-changes KEEP comments — both keys ARE
  invalidated (trash-list by 3 mutations, recent-changes by page CRUD), but
  invalidateQueries only marks an UNMOUNTED query stale without refetching, so the
  mount refetch closes the gap. The old "never invalidated" wording was wrong and
  risked a maintainer deleting a live invalidation as dead code.
- F4: tests for the two load-bearing pure paths — invalidate-on-update-page (the
  undefined-guard: a title-only event keeps the icon; sibling/unrelated subtrees
  untouched) and breadcrumb-path-equal (equal chain → true; any id/slugId/name/
  icon change or length diff → false; both-null → true). Exported
  breadcrumbPathEqual for the test.

Gate: client tsc 0; the 4 affected/new test files 33 passed.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-10 04:37:36 +03:00

54 lines
2.0 KiB
TypeScript

import { describe, it, expect, vi } from "vitest";
import { SpaceTreeNode } from "@/features/page/tree/types";
// breadcrumb.tsx transitively imports @/main.tsx (via usePageMetaQuery ->
// queryClient), whose module body calls ReactDOM.createRoot on a null root in
// jsdom. Stub it so importing the pure helper under test doesn't run that
// (breadcrumbPathEqual does not use queryClient, so a dummy is enough).
vi.mock("@/main.tsx", () => ({ queryClient: {} }));
import { breadcrumbPathEqual } from "./breadcrumb";
// breadcrumbPathEqual is the ONLY point where a false-positive equality would
// leave a stale/incorrect breadcrumb trail on screen: it decides whether the
// selectAtom hands back the same reference (no re-render) for the ancestor chain.
// Pin both directions — a too-loose equality goes stale on a rename; a too-tight
// one loses the perf win.
const node = (over: Partial<SpaceTreeNode>): SpaceTreeNode =>
({ id: "a", slugId: "sa", name: "A", icon: "📄", ...over }) as SpaceTreeNode;
describe("breadcrumbPathEqual", () => {
it("both null → true", () => {
expect(breadcrumbPathEqual(null, null)).toBe(true);
});
it("same reference → true", () => {
const p = [node({})];
expect(breadcrumbPathEqual(p, p)).toBe(true);
});
it("equal by id/slugId/name/icon (different arrays) → true", () => {
expect(breadcrumbPathEqual([node({})], [node({})])).toBe(true);
});
it("one side null → false", () => {
expect(breadcrumbPathEqual([node({})], null)).toBe(false);
expect(breadcrumbPathEqual(null, [node({})])).toBe(false);
});
it("different length → false", () => {
expect(
breadcrumbPathEqual([node({})], [node({}), node({ id: "b" })]),
).toBe(false);
});
it.each(["name", "icon", "slugId", "id"] as const)(
"a changed %s → false (breadcrumb must re-render)",
(field) => {
expect(
breadcrumbPathEqual([node({})], [node({ [field]: "CHANGED" })]),
).toBe(false);
},
);
});