test(core): expand mpv/subsync/tokenizer and cli coverage

src/subsync/utils.test.ts

@@ -0,0 +1,34 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import * as fs from "fs";
+import * as os from "os";
+import * as path from "path";
+import { getSubsyncConfig, runCommand } from "./utils";
+
+test("getSubsyncConfig applies fallback executable paths for blank values", () => {
+  const config = getSubsyncConfig({
+    defaultMode: "manual",
+    alass_path: " ",
+    ffsubsync_path: "",
+    ffmpeg_path: undefined,
+  });
+
+  assert.equal(config.defaultMode, "manual");
+  assert.equal(config.alassPath, "/usr/bin/alass");
+  assert.equal(config.ffsubsyncPath, "/usr/bin/ffsubsync");
+  assert.equal(config.ffmpegPath, "/usr/bin/ffmpeg");
+});
+
+test("runCommand returns failure on timeout", async () => {
+  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "subsync-utils-"));
+  const sleeperPath = path.join(tmpDir, "sleeper.sh");
+  fs.writeFileSync(sleeperPath, "#!/bin/sh\nsleep 2\n", {
+    encoding: "utf8",
+    mode: 0o755,
+  });
+  fs.chmodSync(sleeperPath, 0o755);
+
+  const result = await runCommand(sleeperPath, [], 50);
+
+  assert.equal(result.ok, false);
+});