1 files changed, 45 insertions, 0 deletions
diff --git a/desktop/assistant/test_ops.js b/desktop/assistant/test_ops.js
new file mode 100644
index 0000000..6d53376
--- /dev/null
+++ b/desktop/assistant/test_ops.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Run: node desktop/assistant/test_ops.js
+// Ops.js is a QML library, so its .pragma line is stripped before node
+// evaluates it.
+
+const fs = require("fs");
+const assert = require("assert");
+
+const src = fs.readFileSync(__dirname + "/Ops.js", "utf8")
+    .replace(/^\.pragma library$/m, "");
+const O = new Function(src + "\nreturn { offered, COMPRESS };")();
+
+const f = (name, kind) => ({ path: "/x/" + name, name, kind });
+const labels = files => O.offered(files).map(o => o.label);
+
+assert.deepStrictEqual(labels([f("a.pdf", "pdf")]), ["To .md", "To images", "Compress…"]);
+assert.deepStrictEqual(labels([f("a.pdf", "pdf"), f("b.pdf", "pdf")]),
+                       ["To .md", "To images", "Merge", "Compress…"]);
+assert.deepStrictEqual(labels([f("a.pdf", "pdf"), f("p.png", "image")]), ["Compress…"]);
+// An image's own format is not offered.
+assert.deepStrictEqual(labels([f("p.png", "image")]), ["To JPEG", "To WebP", "Resize 50%", "Compress…"]);
+assert.deepStrictEqual(labels([f("p.JPG", "image")]), ["To PNG", "To WebP", "Resize 50%", "Compress…"]);
+// Mixed formats: offered while any file would change.
+assert.deepStrictEqual(labels([f("p.png", "image"), f("q.jpg", "image")]),
+                       ["To PNG", "To JPEG", "To WebP", "Resize 50%", "Compress…"]);
+assert.deepStrictEqual(labels([f("c.mp4", "video")]),
+                       ["Extract audio", "To WebM", "To GIF", "Trackcrop", "Compress…"]);
+assert.deepStrictEqual(labels([f("c.mkv", "video")]),
+                       ["Extract audio", "To MP4", "To WebM", "To GIF", "Trackcrop", "Compress…"]);
+assert.deepStrictEqual(labels([f("b.tar.gz", "archive")]), ["Extract", "Compress…"]);
+assert.deepStrictEqual(labels([f("n.txt", "text")]), ["Compress…"]);
+assert.deepStrictEqual(labels([]), []);
+assert.deepStrictEqual(O.COMPRESS.map(c => c.op), ["zip", "tgz", "txz", "tbz2"]);
+
+console.log("ok");