import { describe, expect, test } from "bun:test";
import { renderMarkdown } from "../extract/markdown-renderer";
import {
buildHnDocument,
buildHnThreadMarkdown,
extractHnThreadFromHtml,
parseHnItemId,
type HnCommentNode,
type HnItem,
} from "../adapters/hn";
describe("hn adapter helpers", () => {
test("parses item id from hn item url", () => {
expect(parseHnItemId(new URL("https://news.ycombinator.com/item?id=47534848"))).toBe(47534848);
expect(parseHnItemId(new URL("https://news.ycombinator.com/newest"))).toBeNull();
});
test("renders threaded comments with author, time, and nested indentation", () => {
const story: HnItem = {
id: 47534848,
type: "story",
by: "mmcclure",
time: 1774554485,
title: "Example & Title",
url: "https://example.com/post",
score: 257,
descendants: 2,
};
const comments: HnCommentNode[] = [
{
item: {
id: 47535377,
type: "comment",
by: "jackfruitpeel",
time: 1774557334,
text: "Root commentWith two paragraphs.",
},
children: [
{
item: {
id: 47535469,
type: "comment",
by: "__MatrixMan__",
time: 1774557848,
text: "Nested reply with a relative link.",
},
children: [],
},
],
},
];
const body = buildHnThreadMarkdown(story, comments, "https://news.ycombinator.com/item?id=47534848");
expect(body).toContain("Source: [https://example.com/post](https://example.com/post)");
expect(body).toContain("Submitted by mmcclure at 2026-03-26 19:48:05 UTC");
expect(body).toContain("- jackfruitpeel · [2026-03-26 20:35:34 UTC](https://news.ycombinator.com/item?id=47534848#47535377)");
expect(body).toContain(" Root comment");
expect(body).toContain(" With two paragraphs.");
expect(body).toContain(" - __MatrixMan__ · [2026-03-26 20:44:08 UTC](https://news.ycombinator.com/item?id=47534848#47535469)");
expect(body).toContain(" Nested reply with a [relative link](https://news.ycombinator.com/item?id=1).");
});
test("extracts story metadata and nested comments from hn html", () => {
const parsed = extractHnThreadFromHtml(
`
`,
"https://news.ycombinator.com/item?id=47534848",
);
expect(parsed).not.toBeNull();
expect(parsed?.story.title).toBe("Example story");
expect(parsed?.story.url).toBe("https://example.com/post");
expect(parsed?.story.by).toBe("mmcclure");
expect(parsed?.story.time).toBe(1774554485);
expect(parsed?.story.score).toBe(257);
expect(parsed?.story.descendants).toBe(152);
expect(parsed?.story.text).toContain("Story");
expect(parsed?.comments).toHaveLength(1);
expect(parsed?.comments[0]?.item.by).toBe("jackfruitpeel");
expect(parsed?.comments[0]?.children).toHaveLength(1);
expect(parsed?.comments[0]?.children[0]?.item.by).toBe("willio58");
});
test("builds hn document with metadata and markdown body", () => {
const document = buildHnDocument(
{
id: 123,
type: "story",
by: "pg",
time: 1175714200,
title: "Ask HN: Example",
text: "What are you working on?",
score: 111,
descendants: 0,
},
[],
"https://news.ycombinator.com/item?id=123",
);
const markdown = renderMarkdown(document);
expect(document.adapter).toBe("hn");
expect(document.siteName).toBe("Hacker News");
expect(document.publishedAt).toBe("2007-04-04T19:16:40.000Z");
expect(markdown).toContain('adapter: "hn"');
expect(markdown).toContain('siteName: "Hacker News"');
expect(markdown).toContain("# Ask HN: Example");
expect(markdown).toContain("## Post");
expect(markdown).toContain("What are you working on?");
expect(markdown).toContain("## Comments");
expect(markdown).toContain("No comments.");
});
});