rudeshark.net/packages/backend/test/extract-mentions.ts

import * as assert from "assert";

import { parse } from "mfm-js";
import { extractMentions } from "../src/misc/extract-mentions.js";

describe("Extract mentions", () => {
	it("simple", () => {
		const ast = parse("@foo @bar @baz")!;
		const mentions = extractMentions(ast);
		assert.deepStrictEqual(mentions, [
			{
				username: "foo",
				acct: "@foo",
				host: null,
			},
			{
				username: "bar",
				acct: "@bar",
				host: null,
			},
			{
				username: "baz",
				acct: "@baz",
				host: null,
			},
		]);
	});

	it("nested", () => {
		const ast = parse("@foo **@bar** @baz")!;
		const mentions = extractMentions(ast);
		assert.deepStrictEqual(mentions, [
			{
				username: "foo",
				acct: "@foo",
				host: null,
			},
			{
				username: "bar",
				acct: "@bar",
				host: null,
			},
			{
				username: "baz",
				acct: "@baz",
				host: null,
			},
		]);
	});
});