import { test } from "node:test";
import assert from "node:assert/strict";
import { parsePorcelain } from "./git";

// Run with: pnpm --filter yt-dlp-transcript-common exec tsx --test common/lib/git.test.ts
// (or `node_modules/.bin/tsx --test common/lib/git.test.ts` from the repo root)

test("parsePorcelain returns empty array for clean tree", () => {
  assert.deepEqual(parsePorcelain(""), []);
  assert.deepEqual(parsePorcelain("\n"), []);
});

test("parsePorcelain reads modified and staged paths", () => {
  const out = " M editor/CHANGELOG.md\nM  common/lib/git.ts\n";
  assert.deepEqual(parsePorcelain(out), [
    "editor/CHANGELOG.md",
    "common/lib/git.ts",
  ]);
});

test("parsePorcelain reads untracked paths", () => {
  assert.deepEqual(parsePorcelain("?? export/new-file.md\n"), [
    "export/new-file.md",
  ]);
});

test("parsePorcelain returns the post-arrow path for renames", () => {
  const out = "R  old/name.md -> new/name.md\n";
  assert.deepEqual(parsePorcelain(out), ["new/name.md"]);
});

test("parsePorcelain tolerates CRLF line endings", () => {
  assert.deepEqual(parsePorcelain(" M a.md\r\n?? b.md\r\n"), ["a.md", "b.md"]);
});