add program files

tests/test_cli.py

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+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from audiobooksorter.cli import main
+
+
+def _make_book(folder: Path, title: str, author: str, series: str | None, index: int | None) -> None:
+    folder.mkdir(parents=True)
+    (folder / "metadata.json").write_text(
+        json.dumps(
+            {"title": title, "author": author, "series": series, "seriesIndex": index},
+        ),
+        encoding="utf-8",
+    )
+    (folder / f"{title}.txt").write_text(title, encoding="utf-8")
+
+
+def test_cli_sorts_library(tmp_path: Path) -> None:
+    library = tmp_path / "input"
+    _make_book(library / "BookA", "Wayfarers", "Becky Chambers", None, None)
+    _make_book(library / "BookB", "The Final Empire", "Brandon Sanderson", "Mistborn", 1)
+
+    output = tmp_path / "output"
+
+    exit_code = main(["--library", str(library), "--output", str(output)])
+
+    assert exit_code == 0
+    assert (output / "Becky Chambers" / "Wayfarers" / "Wayfarers.txt").read_text(encoding="utf-8") == "Wayfarers"
+    assert (
+        output / "Brandon Sanderson" / "Mistborn" / "Book 1 - The Final Empire" / "The Final Empire.txt"
+    ).read_text(encoding="utf-8") == "The Final Empire"
+
+
+def test_cli_dry_run_shows_directory_structure(tmp_path: Path, capsys: object) -> None:
+    library = tmp_path / "input"
+    _make_book(library / "BookA", "All the Skills", "Honour Rae", "All the Skills", 1)
+    _make_book(library / "BookB", "All the Skills", "Honour Rae", "All the Skills", 2)
+    _make_book(library / "BookC", "The Wandering Inn", "PirateAba", "The Wandering Inn", 1)
+    _make_book(library / "BookD", "Fae and Fare", "PirateAba", "The Wandering Inn", 2)
+    _make_book(library / "BookE", "Domestication", "Seth Ring", "Battle Mage Farmer", 1)
+
+    exit_code = main(["--library", str(library), "--dry-run"])
+
+    assert exit_code == 0
+    captured = capsys.readouterr()
+    assert "Honour Rae / All the Skills" in captured.out
+    assert "Honour Rae / All the Skills / Book 1 - All the Skills" in captured.out
+    assert "Honour Rae / All the Skills / Book 2 - All the Skills" in captured.out
+    assert "PirateAba / The Wandering Inn" in captured.out
+    assert "PirateAba / The Wandering Inn / Book 1 - The Wandering Inn" in captured.out
+    assert "PirateAba / The Wandering Inn / Book 2 - Fae and Fare" in captured.out
+    assert "Seth Ring / Battle Mage Farmer" in captured.out
+    assert "Seth Ring / Battle Mage Farmer / Book 1 - Domestication" in captured.out