FiltersWorkAsExpected: test Icinga Web filters...

...for some important cases

test/php/library/Director/Application/FiltersWorkAsExpectedTest.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Tests\Icinga\Module\Director\Application;
+
+use Icinga\Data\Filter\Filter;
+use Icinga\Module\Director\Test\BaseTestCase;
+
+class FiltersWorkAsExpectedTest extends BaseTestCase
+{
+    public function testBasics()
+    {
+        $filter = Filter::fromQueryString('a');
+        $this->assertTrue($filter->matches((object) ['a' => '1']), '1 is not true');
+    }
+}