test: cover rageshake media quality metadata and preset edge cases

src/livekit/options.test.ts

@@ -6,7 +6,7 @@ Please see LICENSE in the repository root for full details.
 */
 
 import { describe, expect, it, vi } from "vitest";
-import { VideoPresets } from "livekit-client";
+import { VideoPresets, type VideoPreset } from "livekit-client";
 
 import { buildLiveKitOptions, getLiveKitOptions } from "./options";
 import { Config } from "../config/Config";
@@ -101,6 +101,41 @@ describe("buildLiveKitOptions", () => {
     });
   });
 
+  it("maps low resolutions to the closest preset, rounding up", () => {
+    const expectations: [number, VideoPreset][] = [
+      [180, VideoPresets.h180],
+      [360, VideoPresets.h360],
+      [480, VideoPresets.h540],
+      [540, VideoPresets.h540],
+      [720, VideoPresets.h720],
+    ];
+    for (const [height, preset] of expectations) {
+      const opts = buildLiveKitOptions({ video: { max_resolution: height } });
+      expect(opts.videoCaptureDefaults?.resolution).toEqual(preset.resolution);
+    }
+  });
+
+  it("screen share layers fall back to max_framerate, then 30", () => {
+    const fromMax = buildLiveKitOptions({
+      screen_share: {
+        max_framerate: 15,
+        simulcast_layers: [{ height: 540, bitrate: 1_000_000 }],
+      },
+    });
+    expect(
+      fromMax.publishDefaults?.screenShareSimulcastLayers?.[0],
+    ).toMatchObject({ encoding: { maxFramerate: 15 } });
+
+    const fromDefault = buildLiveKitOptions({
+      screen_share: {
+        simulcast_layers: [{ height: 540, bitrate: 1_000_000 }],
+      },
+    });
+    expect(
+      fromDefault.publishDefaults?.screenShareSimulcastLayers?.[0],
+    ).toMatchObject({ encoding: { maxFramerate: 30 } });
+  });
+
   it("applies custom video simulcast layers", () => {
     const opts = buildLiveKitOptions({
       video: {