feat: validation expectations (#1762)

* feat: add validation expectations for IP, MAC, hostname, domain, base64, and hexadecimal

* improvements

* improvements

tests/Features/Expect/toBeDomain.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Exceptions\InvalidExpectationValue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function (): void {
+    expect('example.com')->toBeDomain() // standard domain
+        ->and('sub.example.com')->toBeDomain() // subdomain
+        ->and('my-host.io')->toBeDomain() // with hyphen
+        ->and('example.co.uk')->toBeDomain(); // multi-level TLD
+});
+
+test('failures', function (): void {
+    expect('example')->toBeDomain();
+})->throws(ExpectationFailedException::class);
+
+test('failures with leading dot', function (): void {
+    expect('.example.com')->toBeDomain();
+})->throws(ExpectationFailedException::class);
+
+test('failures with invalid type', function (): void {
+    expect([])->toBeDomain();
+})->throws(InvalidExpectationValue::class, 'Invalid expectation value type. Expected [string].');
+
+test('failures with custom message', function (): void {
+    expect('example')->toBeDomain('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function (): void {
+    expect('example.com')->not->toBeDomain();
+})->throws(ExpectationFailedException::class);