cleanup global context usage in widgets

tests/Twig/EventExtensionsTest.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Twig;
+
+use App\Twig\EventExtensions;
+use PHPUnit\Framework\TestCase;
+use Twig\TwigFunction;
+
+/**
+ * @covers \App\Twig\EventExtensions
+ */
+class EventExtensionsTest extends TestCase
+{
+    protected function getSut(): EventExtensions
+    {
+        return new EventExtensions();
+    }
+
+    public function testGetFunctions()
+    {
+        $functions = ['trigger'];
+        $sut = $this->getSut();
+        $twigFunctions = $sut->getFunctions();
+        self::assertCount(\count($functions), $twigFunctions);
+        $i = 0;
+        /** @var TwigFunction $filter */
+        foreach ($twigFunctions as $filter) {
+            self::assertInstanceOf(TwigFunction::class, $filter);
+            self::assertEquals($functions[$i++], $filter->getName());
+        }
+    }
+}