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a tool for shared writing and social publishing
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182import { describe, expect, it } from "vitest";import { buildPostsListIndex, postMatchesTags, postsListFilterFromSearch, postsListFilterSearch, readerControlledUris, sortPostsForList,} from "./postsListPagination";
describe("postMatchesTags", () => { it("matches any of the filter's tags, and everything when empty", () => { expect(postMatchesTags(["a", "b"], ["b", "c"])).toBe(true); expect(postMatchesTags(["a"], ["c"])).toBe(false); expect(postMatchesTags(undefined, ["c"])).toBe(false); expect(postMatchesTags(undefined, [])).toBe(true); expect(postMatchesTags(["a"], null)).toBe(true); });});
describe("posts-list filter search params", () => { it("is empty without a filter", () => { expect(postsListFilterSearch(undefined)).toBe(""); expect(postsListFilterSearch([])).toBe(""); });
it("writes one stable URL per tag set and reads it back", () => { const search = postsListFilterSearch([ "zines, etc", "art & craft", "art & craft", ]); expect(search).toBe(postsListFilterSearch(["art & craft", "zines, etc"])); expect(postsListFilterFromSearch(new URLSearchParams(search))).toEqual([ "art & craft", "zines, etc", ]); });
it("ignores unrelated params", () => { expect( postsListFilterFromSearch( new URLSearchParams("?interactionDrawer=comments&tag=fiction"), ), ).toEqual(["fiction"]); });});
const post = (uri: string, publishedAt?: string, tags?: string[]) => ({ uri, record: { title: uri, publishedAt, tags }, commentsCount: 0, mentionsCount: 0, recommendsCount: 0,});
describe("readerControlledUris", () => { // The published page ships only the index when a list has reader controls, // so the default order must reproduce the server's list order exactly. it("matches sortPostsForList at the default reader state", () => { const posts = [ post("at://a/3", "2026-01-03T00:00:00Z"), post("at://a/1", "2026-01-01T00:00:00Z"), post("at://a/undated"), post("at://a/2b", "2026-01-02T00:00:00Z"), post("at://a/2a", "2026-01-02T00:00:00Z"), post("at://a/undated2"), ]; const expected = sortPostsForList(posts).map((p) => p.uri); expect(readerControlledUris(buildPostsListIndex(posts), {})).toEqual( expected, ); expect( readerControlledUris(buildPostsListIndex(posts), { search: "", tags: null, sort: "latest", }), ).toEqual(expected); });});