Add missing test

Author: smnandre

src/Icons/tests/Unit/Registry/InMemoryIconRegistryTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\UX\Icons\Tests\Unit\Registry;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\UX\Icons\Exception\IconNotFoundException;
 use Symfony\UX\Icons\Registry\InMemoryIconRegistry;
 use Symfony\UX\Icons\Svg\Icon;
 
@@ -20,15 +21,15 @@
  */
 final class InMemoryIconRegistryTest extends TestCase
 {
-    public function testRegistryConstructor()
+    public function testRegistryConstructor(): void
     {
         $icon = new Icon('foo', ['bar' => 'foobar']);
         $registry = new InMemoryIconRegistry(['foo' => $icon]);
 
         $this->assertSame($icon, $registry->get('foo'));
     }
 
-    public function testRegistryReplaceIcon()
+    public function testRegistryReplaceIcon(): void
     {
         $registry = new InMemoryIconRegistry();
         $foo = new Icon('foo', []);
@@ -43,4 +44,13 @@ public function testRegistryReplaceIcon()
         $registry->set('bar', $foo);
         $this->assertSame($foo, $registry->get('bar'));
     }
+
+    public function testRegistryThrowsExceptionOnUnknownIcon(): void
+    {
+        $this->expectException(IconNotFoundException::class);
+        $this->expectExceptionMessage('Icon "foo" not found.');
+
+        $registry = new InMemoryIconRegistry();
+        $registry->get('foo');
+    }
 }