feat: Admin Area General Settings and Categories 1.02

tests/frontend/admin-general-pure.spec.ts

@@ -3,6 +3,7 @@ import {
   endAfterStartValidator,
   normalizePageTitle,
   pageTitleError,
+  pageTitleMessage,
   toDatetimeLocal,
   toIsoUtc,
 } from '../../frontend/src/app/features/admin/general.pure';
@@ -126,3 +127,37 @@ describe('normalizePageTitle', () => {
     expect(normalizePageTitle('  OpenVelo  ')).toBe('OpenVelo');
   });
 });
+
+describe('pageTitleMessage', () => {
+  const requiredMsg = 'Page title is required and cannot contain only whitespace.';
+  const maxLengthMsg = 'Page title must be 120 characters or fewer.';
+
+  it('returns the required message for empty input', () => {
+    expect(pageTitleMessage('', null)).toBe(requiredMsg);
+  });
+
+  it('returns the required message for whitespace-only input', () => {
+    expect(pageTitleMessage('   ', null)).toBe(requiredMsg);
+    expect(pageTitleMessage('\t\n ', null)).toBe(requiredMsg);
+  });
+
+  it('returns null for a valid title', () => {
+    expect(pageTitleMessage('OpenVelo', null)).toBeNull();
+  });
+
+  it('returns the maxlength message when the raw string exceeds 120 characters', () => {
+    expect(pageTitleMessage('a'.repeat(121), null)).toBe(maxLengthMsg);
+  });
+
+  it('surfaces the whitespace validator error when control errors are provided', () => {
+    expect(pageTitleMessage('   ', { whitespace: true })).toBe(requiredMsg);
+  });
+
+  it('surfaces the required control error', () => {
+    expect(pageTitleMessage('', { required: true })).toBe(requiredMsg);
+  });
+
+  it('surfaces the maxlength control error', () => {
+    expect(pageTitleMessage('a'.repeat(121), { maxlength: { requiredLength: 120 } })).toBe(maxLengthMsg);
+  });
+});