ui cleanup

tests/audio-dispose.test.ts

@@ -0,0 +1,38 @@
+/**
+ * Audio backend dispose regression test.
+ *
+ * The `q` (quit) action routes through `process.exit(0)`, which bypasses
+ * Solid's onCleanup (where useAudio's onCleanup disposes the backend). To
+ * keep spawned players (mpv/ffplay/afplay) from surviving the host, useAudio
+ * registers a `process.on("exit")` handler that synchronously disposes the
+ * backend. The exit handler's whole job is "kill the child process", so this
+ * test pins the contract directly: a backend holding a real spawned subprocess
+ * must have killed it once `dispose()` returns.
+ *
+ * Uses a real `Bun.spawn(["sleep", "60"])` subprocess as a stand-in for the
+ * player process, injected into the (private) `proc` slot of an MpvBackend —
+ * mpv/ffplay/afplay all share the identical kill-on-dispose pattern, so
+ * exercising one is enough to guard the family.
+ */
+import { test, expect } from "bun:test";
+import { MpvBackend } from "../src/utils/audio-player";
+
+test("MpvBackend.dispose() kills the spawned child process", async () => {
+	const backend = new MpvBackend();
+	// Inject a real long-lived subprocess as if mpv had been spawned.
+	const child = Bun.spawn(["sleep", "60"], {
+		stdout: "ignore",
+		stderr: "ignore",
+		stdin: "ignore",
+	});
+	(backend as unknown as { proc: typeof child }).proc = child;
+
+	// Sanity: the child is alive.
+	expect(child.killed).toBe(false);
+
+	backend.dispose();
+
+	// dispose() sent SIGTERM (proc.kill()); wait for the child to exit.
+	await child.exited;
+	expect(child.killed).toBe(true);
+});