Fix code standart & test DSL/Aggregation

Aggregation/CardinalityAggregationTest.php

@@ -65,6 +65,4 @@ class CardinalityAggregationTest extends \PHPUnit_Framework_TestCase
         $aggregation = new CardinalityAggregation('bar');
         $aggregation->getArray();
     }
-
-
 }

Aggregation/ChildrenAggregationTest.php

+<?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\Aggregation\ChildrenAggregation;
+
+/**
+ * Unit test for children aggregation.
+ */
+class ChildrenAggregationTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Tests if ChildrenAggregation#getArray throws exception when expected.
+     *
+     * @expectedException \LogicException
+     */
+    public function testGetArrayException()
+    {
+        $aggregation = new ChildrenAggregation('foo');
+        $aggregation->getArray();
+    }
+}

Aggregation/FilterAggregationTest.php

@@ -12,6 +12,8 @@
 namespace ONGR\ElasticsearchBundle\Tests\Unit\DSL\Aggregation;
 
 use ONGR\ElasticsearchBundle\DSL\Aggregation\FilterAggregation;
+use ONGR\ElasticsearchBundle\DSL\Filter\AndFilter;
+use ONGR\ElasticsearchBundle\DSL\Filter\MissingFilter;
 
 class FilterAggregationTest extends \PHPUnit_Framework_TestCase
 {
@@ -130,4 +132,15 @@ class FilterAggregationTest extends \PHPUnit_Framework_TestCase
         $aggregation = new FilterAggregation('test_agg');
         $aggregation->toArray();
     }
+
+    /**
+     * Test for toArray() with setting a filter.
+     */
+    public function testToArrayWithFilter()
+    {
+        $aggregation = new FilterAggregation('test_agg');
+
+        $aggregation->setFilter(new MissingFilter('test'));
+        $aggregation->toArray();
+    }
 }

Suggester/PhraseTest.php

@@ -109,7 +109,6 @@ class PhraseTest extends \PHPUnit_Framework_TestCase
     {
         $this->setStub(new Phrase('foo', 'bar'));
 
-
         return 'ONGR\ElasticsearchBundle\DSL\Suggester\Phrase';
     }
 
@@ -130,4 +129,4 @@ class PhraseTest extends \PHPUnit_Framework_TestCase
             ['size'],
         ];
     }
-}
+}
\ No newline at end of file