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MusicPlayer/TESTING.md
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Sansan 390da577d7 Name popups *Popup and give scripts, scenes and classes matching names
Every popup is now called *Popup instead of *Window in its file, root node,
node name, class and variable, and PopupWindow becomes BasePopup. Player is
PlayerRow, SongListObject is SongRow and Character is CharacterCard. Script
files are snake_case and scene files PascalCase, each matching its class or
root node, and LightGrayTheme.tres is light_gray_theme.tres.
2026-10-06 11:22:39 +02:00

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# Testing
Tests use [GdUnit4](https://github.com/godot-gdunit-labs/gdUnit4) 6.2.1, committed in
`addons/gdUnit4/`. The whole suite runs headless in about 10 seconds.
## Running the tests
```bash
./run_tests.sh # everything
./run_tests.sh res://tests/unit # only unit tests
./run_tests.sh res://tests/unit/test_search.gd # one suite
```
The script finds Godot through `$GODOT`, then `godot` on your PATH, then
`/Applications/Godot.app` or `/Applications/Godot_mono.app`. Reports are written to
`reports/` (ignored by git).
In the editor, open the GdUnit4 panel or right-click the `tests` folder and choose
**Run Tests**.
CI runs the suite in the `test` job of `.gitea/workflows/gitea-build.yaml` on every push
and pull request to `main` and `develop`. The `build` job only starts once the tests
pass.
## Layout
| Folder | Contents |
|---|---|
| `tests/unit/` | Logic without scenes: playlist, songs, player scoring, time formatting, search, the server client |
| `tests/integration/` | Real scenes (`MainWindow.tscn`, `SyncPopup.tscn`) run against a fake server, including the point keybinds |
| `tests/fakes/` | `FakeHttpTransport`, `AutoloadSnapshot` and the `MainWindowTestSuite` base class |
| `tests/data/` | Files the fake server sends, e.g. a short MP3 |
## Faking the MusicServer
All server calls go through the `MusicServerClient` autoload, which sends requests with
a swappable `transport`. Tests install a `FakeHttpTransport` that answers from canned
responses and records what was requested:
```gdscript
var server: FakeHttpTransport = FakeHttpTransport.new().install()
server.respond_json("/music/list", [{"SongNo": 0, "Soundtrack": "Chrono Trigger", "Song": "Frog's Theme"}])
server.respond_bytes("/music/rand", mp3_bytes)
# ... run the code under test ...
assert_int(server.count("/music/rand")).is_equal(1)
server.uninstall()
```
Paths without a response get a 404, so the code under test sees a failed request.
## Writing tests
- Settings and Playlist are global. Tests that change them restore them afterwards, either
by hand or with `AutoloadSnapshot.take([Settings, Playlist])` and `restore()`.
- Main window tests extend `MainWindowTestSuite`, which starts the window against the fake
server and has helpers such as `_add_player()`, `_remove_player()` and
`_give_point_with_keybind()`.
- Player ids are UUID strings that never change. A player's position in
`Settings.player_array` only decides their keybind (Alt+1 for the first row and so on),
so tests check both: that points land on the right player id, and that keybinds follow
the rows when players are added or removed.