AI Implementation feature(821): First-Start Create Admin Modal (#2)

tests/frontend/setup-create-admin.spec.ts

@@ -0,0 +1,60 @@
+import {
+  passwordMatchValidator,
+  PasswordMatchGroupLike,
+} from '../../frontend/src/app/features/setup/setup-create-admin.validators';
+
+function makeGroup(password: string | null | undefined, confirm: string | null | undefined): PasswordMatchGroupLike {
+  return {
+    get: (name) => {
+      if (name === 'password') return { value: password };
+      if (name === 'passwordConfirm') return { value: confirm };
+      return null;
+    },
+  };
+}
+
+describe('passwordMatchValidator', () => {
+  it('returns null when either field is empty (let other validators handle required)', () => {
+    expect(passwordMatchValidator(makeGroup('', 'x'))).toBeNull();
+    expect(passwordMatchValidator(makeGroup('x', ''))).toBeNull();
+    expect(passwordMatchValidator(makeGroup(undefined, undefined))).toBeNull();
+  });
+
+  it('returns null when passwords match', () => {
+    expect(passwordMatchValidator(makeGroup('Sup3r!', 'Sup3r!'))).toBeNull();
+  });
+
+  it('returns { passwordMismatch: true } when passwords differ', () => {
+    expect(passwordMatchValidator(makeGroup('Sup3r!', 'Sup4r!'))).toEqual({
+      passwordMismatch: true,
+    });
+  });
+});
+
+describe('Username field rules (mirroring component validators)', () => {
+  const PATTERN = /^[a-zA-Z0-9_.-]+$/;
+  const MIN = 3;
+  const MAX = 32;
+
+  function isValidUsername(value: string): boolean {
+    return value.length >= MIN && value.length <= MAX && PATTERN.test(value);
+  }
+
+  it('accepts a 3-32 char username with allowed characters', () => {
+    expect(isValidUsername('first.admin_01')).toBe(true);
+  });
+
+  it('rejects usernames shorter than 3', () => {
+    expect(isValidUsername('a')).toBe(false);
+  });
+
+  it('rejects usernames with disallowed characters', () => {
+    expect(isValidUsername('bad name')).toBe(false);
+    expect(isValidUsername('user!')).toBe(false);
+    expect(isValidUsername('user@')).toBe(false);
+  });
+
+  it('rejects usernames longer than 32', () => {
+    expect(isValidUsername('a'.repeat(33))).toBe(false);
+  });
+});