add some tests and fix argument for self closing tags

Author: matheo

src/TwigComponent/src/Twig/ComponentLexer.php

@@ -12,7 +12,7 @@ class ComponentLexer extends Lexer
     const COMPONENTS_REGEX = [
         'open_tags' => '/<\s*([A-Z][\w\-\:\.]+)\s*' . self::ATTRIBUTES_REGEX . '(\s?)+>/',
         'close_tags' => '/<\/\s*([A-Z][\w\-\:\.]+)\s*>/',
-        'self_close_tags' => '/<\s*([A-Z][\w\-\:\.]+)\s*' . self::ATTRIBUTES_REGEX . '*(\s?)+\/>/',
+        'self_close_tags' => '/<\s*([A-Z][\w\-\:\.]+)\s*' . self::ATTRIBUTES_REGEX . '(\s?)+\/>/',
     ];
 
     public function tokenize(Source $source): TokenStream

src/TwigComponent/tests/Fixtures/templates/tags/open_tag.html.twig

@@ -0,0 +1,2 @@
+<Component_a propA propB='hello'>
+</Component_a>

src/TwigComponent/tests/Fixtures/templates/tags/self_closing_tag.html.twig

@@ -0,0 +1 @@
+<Component_a propA propB='hello'/>

src/TwigComponent/tests/Integration/ComponentLexerTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Symfony\UX\TwigComponent\Tests\Integration;
+
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Twig\Environment;
+
+class ComponentLexerTest extends KernelTestCase
+{
+    public function testComponentSyntaxOpenTags(): void
+    {
+        $output = self::getContainer()->get(Environment::class)->render('tags/open_tag.html.twig');
+
+        $this->assertStringContainsString('propA: 1', $output);
+        $this->assertStringContainsString('propB: hello', $output);
+    }
+
+    public function testComponentSyntaxSelfClosingTags(): void
+    {
+        $output = self::getContainer()->get(Environment::class)->render('tags/self_closing_tag.html.twig');
+
+        $this->assertStringContainsString('propA: 1', $output);
+        $this->assertStringContainsString('propB: hello', $output);
+    }
+}