view models

apps/website/lib/view-models/RecordEngagementOutputViewModel.test.ts

@@ -0,0 +1,33 @@
+import { describe, it, expect } from 'vitest';
+import { RecordEngagementOutputViewModel } from './RecordEngagementOutputViewModel';
+
+describe('RecordEngagementOutputViewModel', () => {
+  it('maps DTO fields into view model', () => {
+    const dto = { eventId: 'evt-123', engagementWeight: 1.2345 } as any;
+
+    const vm = new RecordEngagementOutputViewModel(dto);
+
+    expect(vm.eventId).toBe('evt-123');
+    expect(vm.engagementWeight).toBe(1.2345);
+  });
+
+  it('formats displayEventId with prefix', () => {
+    const vm = new RecordEngagementOutputViewModel({ eventId: 'evt-999', engagementWeight: 0.5 } as any);
+
+    expect(vm.displayEventId).toBe('Event: evt-999');
+  });
+
+  it('formats engagement weight to two decimals', () => {
+    const vm = new RecordEngagementOutputViewModel({ eventId: 'evt', engagementWeight: 1.2 } as any);
+
+    expect(vm.displayEngagementWeight).toBe('1.20');
+  });
+
+  it('flags high engagement above threshold', () => {
+    const low = new RecordEngagementOutputViewModel({ eventId: 'evt', engagementWeight: 0.5 } as any);
+    const high = new RecordEngagementOutputViewModel({ eventId: 'evt', engagementWeight: 1.5 } as any);
+
+    expect(low.isHighEngagement).toBe(false);
+    expect(high.isHighEngagement).toBe(true);
+  });
+});