Added typographic rule registration & removal tests

Author: toonvandenbos

tests/Feature/TypographyTest.php

@@ -1,6 +1,7 @@
 <?php
 
 use Whitecube\Strings\ServiceProvider;
+use Whitecube\Strings\Typography;
 
 it('can load ServiceProvider correctly', function() {
     expect(app()->providerIsLoaded(ServiceProvider::class))->toBeTrue();
@@ -40,3 +41,17 @@
         expect((string) str($value)->typography())->toBe($expectation);
     }
 });
+
+it('can register and remove custom typographic rules', function() {
+    Typography::rule(
+        key: 'a-to-b',
+        regex: '/a/',
+        callback: fn(array $matches) => 'b',
+    );
+
+    expect((string) str('...Banana !')->typography())->toBe('&hellip;Bbnbnb&nbsp;!');
+
+    Typography::remove('a-to-b');
+
+    expect((string) str('...Banana !')->typography())->toBe('&hellip;Banana&nbsp;!');
+});