Add tests that should fail on {$enum} in templates

Because enum "could not be converted to string".

tests/Rule/LatteTemplatesRule/EngineBootstrap/Fixtures/EnumSomething.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Efabrica\PHPStanLatte\Tests\Rule\LatteTemplatesRule\EngineBootstrap\Fixtures;
+
+enum EnumSomething: string
+{
+
+    case Foo = 'FOO';
+
+}

tests/Rule/LatteTemplatesRule/EngineBootstrap/Fixtures/EnumsPresenter.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Efabrica\PHPStanLatte\Tests\Rule\LatteTemplatesRule\EngineBootstrap\Fixtures;
+
+use Nette\Application\UI\Presenter;
+
+
+final class EnumsPresenter extends Presenter
+{
+    public function actionDefault(): void
+    {
+        $this->template->enum = EnumSomething::Foo();
+    }
+}

tests/Rule/LatteTemplatesRule/EngineBootstrap/Fixtures/templates/Enums/default.latte

@@ -0,0 +1 @@
+{$enum}

tests/Rule/LatteTemplatesRule/EngineBootstrap/LatteTemplatesRuleForEngineBootstrapEnumsTest.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Efabrica\PHPStanLatte\Tests\Rule\LatteTemplatesRule\EngineBootstrap;
+
+use Efabrica\PHPStanLatte\Tests\Rule\LatteTemplatesRule\LatteTemplatesRuleTest;
+
+/**
+ * @requires PHP > 8.1
+ */
+final class LatteTemplatesRuleForEngineBootstrapEnumsTest extends LatteTemplatesRuleTest
+{
+    protected static function additionalConfigFiles(): array
+    {
+        return [
+            __DIR__ . '/../../../../rules.neon',
+            __DIR__ . '/../../../config.neon',
+            __DIR__ . '/config.neon',
+        ];
+    }
+
+    public function testFilters(): void
+    {
+        $this->analyse([__DIR__ . '/Fixtures/EnumsPresenter.php'], [
+            [
+                'Object of class Efabrica\PHPStanLatte\Tests\Rule\LatteTemplatesRule\EngineBootstrap\Fixtures\EnumSomething could not be converted to string',
+                1,
+                'default.latte',
+            ],
+        ]);
+    }
+}