Add tests for segment utils

src/apps/stable/features/playback/utils/mediaSegments.test.ts

@@ -0,0 +1,68 @@
+import type { MediaSegmentDto } from '@jellyfin/sdk/lib/generated-client/models/media-segment-dto';
+import { MediaSegmentType } from '@jellyfin/sdk/lib/generated-client/models/media-segment-type';
+import { describe, expect, it } from 'vitest';
+
+import { findCurrentSegment } from './mediaSegments';
+
+const TEST_SEGMENTS: MediaSegmentDto[] = [
+    {
+        Id: 'intro',
+        Type: MediaSegmentType.Intro,
+        StartTicks: 0,
+        EndTicks: 10
+    },
+    {
+        Id: 'preview',
+        Type: MediaSegmentType.Preview,
+        StartTicks: 20,
+        EndTicks: 30
+    },
+    {
+        Id: 'recap',
+        Type: MediaSegmentType.Recap,
+        StartTicks: 30,
+        EndTicks: 40
+    },
+    {
+        Id: 'commercial',
+        Type: MediaSegmentType.Commercial,
+        StartTicks: 40,
+        EndTicks: 50
+    },
+    {
+        Id: 'outro',
+        Type: MediaSegmentType.Outro,
+        StartTicks: 50,
+        EndTicks: 60
+    }
+];
+
+describe('findCurrentSegment()', () => {
+    it('Should return the current segment', () => {
+        let segmentDetails = findCurrentSegment(TEST_SEGMENTS, 23);
+        expect(segmentDetails).toBeDefined();
+        expect(segmentDetails?.index).toBe(1);
+        expect(segmentDetails?.segment?.Id).toBe('preview');
+
+        segmentDetails = findCurrentSegment(TEST_SEGMENTS, 5, 1);
+        expect(segmentDetails).toBeDefined();
+        expect(segmentDetails?.index).toBe(0);
+        expect(segmentDetails?.segment?.Id).toBe('intro');
+
+        segmentDetails = findCurrentSegment(TEST_SEGMENTS, 42, 3);
+        expect(segmentDetails).toBeDefined();
+        expect(segmentDetails?.index).toBe(3);
+        expect(segmentDetails?.segment?.Id).toBe('commercial');
+    });
+
+    it('Should return undefined if not in a segment', () => {
+        let segmentDetails = findCurrentSegment(TEST_SEGMENTS, 16);
+        expect(segmentDetails).toBeUndefined();
+
+        segmentDetails = findCurrentSegment(TEST_SEGMENTS, 10, 1);
+        expect(segmentDetails).toBeUndefined();
+
+        segmentDetails = findCurrentSegment(TEST_SEGMENTS, 100);
+        expect(segmentDetails).toBeUndefined();
+    });
+});