diff --git a/Highlight/FieldTest.php b/Highlight/FieldTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..097e352ea93c7c4e6bedf2a20030e2e4cbb5d1dc
--- /dev/null
+++ b/Highlight/FieldTest.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the ONGR package.
+ *
+ * (c) NFQ Technologies UAB <info@nfq.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ONGR\ElasticsearchBundle\Tests\Unit\DSL\Aggregation;
+
+use ONGR\ElasticsearchBundle\DSL\Bool\Bool;
+use ONGR\ElasticsearchBundle\DSL\Filter\MissingFilter;
+
+/**
+ * Unit test for Bool.
+ */
+class BoolTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Tests isRelevant method.
+     */
+    public function testIsRelevant()
+    {
+        $bool = new Bool();
+        $this->assertEquals(false, $bool->isRelevant());
+
+        $bool->addToBool(new MissingFilter('test'));
+        $this->assertEquals(true, $bool->isRelevant());
+    }
+}