1 files changed, 70 insertions, 0 deletions
diff --git a/desktop/modules/monitors/test_mon.js b/desktop/modules/monitors/test_mon.js
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+++ b/desktop/modules/monitors/test_mon.js
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+// 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/modules/monitors/test_mon.js
+// Mon.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 + "/Mon.js", "utf8").replace(/^\.pragma library$/m, "");
+const M = new Function(src + "\nreturn { modes, current, draft, size, xy, lua, file, snap, AUTO };")();
+
+// Duplicates collapse, order kept, the Hz suffix dropped.
+assert.deepStrictEqual(M.modes(["1920x1080@60.00Hz", "1920x1080@120.00Hz", "1920x1080@120.00Hz", "1280x720@60.00Hz"]),
+    ["1920x1080@60.00", "1920x1080@120.00", "1280x720@60.00"]);
+
+// The nearest refresh at the same size, not the first.
+const lg = ["2560x1080@59.98", "2560x1080@99.94", "2560x1080@74.99", "1920x1080@99.94"];
+assert.strictEqual(M.current(lg, 2560, 1080, 99.943), "2560x1080@99.94");
+// A mode the list lacks is written from the live numbers.
+assert.strictEqual(M.current(lg, 3440, 1440, 60), "3440x1440@60.00");
+
+// A hyprctl monitor as a draft.
+const asus = { name: "DP-3", make: "ASUS", model: "VG279Q3A", width: 1920, height: 1080, refreshRate: 100,
+    scale: 1, transform: 1, vrr: false, x: -1080, y: -960,
+    availableModes: ["1920x1080@100.00Hz", "1920x1080@60.00Hz"] };
+const d = M.draft(asus);
+assert.deepStrictEqual([d.mode, d.scale, d.transform, d.vrr, d.position, d.x, d.y],
+    ["1920x1080@100.00", "1", 1, false, "-1080x-960", -1080, -960]);
+
+// Logical size: an odd transform swaps, scale divides.
+assert.deepStrictEqual(M.size("1920x1080@100.00", "1", 1), { w: 1080, h: 1920 });
+assert.deepStrictEqual(M.size("2560x1440@60.00", "1.25", 0), { w: 2048, h: 1152 });
+
+// Exact positions parse, auto ones fall back to where Hyprland put it.
+assert.deepStrictEqual(M.xy({ position: "-1080x-960", x: 0, y: 0 }), { x: -1080, y: -960 });
+assert.deepStrictEqual(M.xy({ position: "auto-center-left", x: 5, y: 6 }), { x: 5, y: 6 });
+assert.ok(M.AUTO.includes("auto-center-right"));
+
+// One line per monitor; vrr only when on.
+assert.strictEqual(M.lua(d),
+    'hl.monitor({ output = "DP-3", mode = "1920x1080@100.00", position = "-1080x-960", scale = "1", transform = 1 })');
+assert.ok(M.lua(Object.assign({}, d, { vrr: true })).endsWith("transform = 1, vrr = 1 })"));
+
+// The file: header, then a comment and a line per monitor.
+const f = M.file([d]);
+assert.ok(f.startsWith("-- Monitors, written by the keystone settings window"));
+assert.ok(f.includes("-- DP-3: ASUS VG279Q3A\n" + M.lua(d) + "\n"));
+
+// Snapping: DP-1 is 2560x1080 at 0,-540. A 1080x1920 monitor dropped with
+// its right edge 30px short of DP-1's left edge snaps flush; 200px short
+// does not.
+const dp1 = [{ x: 0, y: -540, w: 2560, h: 1080 }];
+assert.deepStrictEqual(M.snap({ x: -1110, y: -950, w: 1080, h: 1920 }, dp1, 64), { x: -1080, y: -950 });
+assert.deepStrictEqual(M.snap({ x: -1280, y: -950, w: 1080, h: 1920 }, dp1, 64), { x: -1280, y: -950 });
+// Tops align when close.
+assert.deepStrictEqual(M.snap({ x: -1080, y: -520, w: 1080, h: 1920 }, dp1, 64), { x: -1080, y: -540 });
+// Results are integers.
+assert.deepStrictEqual(M.snap({ x: -1280.6, y: 3000.4, w: 1080, h: 1920 }, dp1, 64), { x: -1281, y: 3000 });
+
+console.log("ok");