Fix component custom key defintion + add test

Author: mbardelmeijer

src/LivewireTokenParser.php

@@ -82,7 +82,7 @@ public function parse(Token $token)
                         $variables = $this->parser->parseExpression();
                     } elseif ($stream->test(Token::NAME_TYPE, 'key')) {
                         $stream->next();  // Consume the 'key' token
-                        $stream->expect(Token::PUNCTUATION_TYPE, '(');
+                        $stream->expect(Token::OPERATOR_TYPE, '(');
                         $key = $this->parser->parseExpression();
                         $stream->expect(Token::PUNCTUATION_TYPE, ')');
                     } else {

tests/RenderTest.php

@@ -42,6 +42,15 @@ public function test_nested_component_correctly_renders()
         $this->assertStringContainsString('Bar', $rendered);
     }
 
+    public function test_key_renders_correctly()
+    {
+        $this->expectNotToPerformAssertions();
+
+        Livewire::component('counter', Counter::class);
+
+        view('key-test')->render();
+    }
+
     public function test_unknown_component_throws_exception()
     {
         $this->expectException(\ErrorException::class);

tests/views/key-test.twig

@@ -0,0 +1,10 @@
+{% extends 'layout' %}
+
+{% block content %}
+    {% livewire.component 'counter' key('fixed-key') %}
+
+    {% set variableKey = 'variable-key' %}
+    {% livewire.component 'counter' key(variableKey) %}
+
+    {% livewire.component 'counter' with {'count': 3, 'title': 'Lorem ipsum!'} key('fixed-key-with-variables-as-well') %}
+{% endblock %}