Update expo application

apps/expo/tests/unit/format.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test } from 'vitest';
+
+import {
+  formatDate,
+  formatDateTime,
+  titleize,
+  truncate,
+} from '../../src/utils/format';
+
+describe('format utilities', () => {
+  test('formats missing timestamps as never', () => {
+    expect(formatDate(undefined)).toBe('Never');
+    expect(formatDateTime(undefined)).toBe('Never');
+  });
+
+  test('formats known timestamps', () => {
+    const value = Date.UTC(2026, 0, 2, 3, 4, 5);
+
+    expect(formatDate(value)).toContain('2026');
+    expect(formatDateTime(value)).toContain('2026');
+  });
+
+  test('titleizes machine values', () => {
+    expect(titleize('waiting_for_user')).toBe('waiting for user');
+  });
+
+  test('truncates long text', () => {
+    expect(truncate('abcdef', 4)).toBe('a...');
+    expect(truncate('abc', 4)).toBe('abc');
+  });
+});