Merge pull request #80 from einorler/nestedAggregation

removed the exception from nestedAggregation

src/Aggregation/NestedAggregation.php

@@ -71,10 +71,6 @@ class NestedAggregation extends AbstractAggregation
      */
     public function getArray()
     {
-        if (count($this->getAggregations()) == 0) {
-            throw new \LogicException("Nested aggregation `{$this->getName()}` has no aggregations added");
-        }
-
         return ['path' => $this->getPath()];
     }
 }

tests/Aggregation/NestedAggregationTest.php

@@ -16,18 +16,6 @@ use ONGR\ElasticsearchDSL\Aggregation\TermsAggregation;
 
 class NestedAggregationTest extends \PHPUnit_Framework_TestCase
 {
-    /**
-     * Test for nested aggregation toArray() method exception.
-     *
-     * @expectedException \LogicException
-     */
-    public function testToArrayException()
-    {
-        $aggregation = new NestedAggregation('test_agg');
-        $aggregation->setPath('test_path');
-        $aggregation->toArray();
-    }
-
     /**
      * Test for nested aggregation toArray() method exception.
      */