Deprecate filters

src/Query/LimitQuery.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\ElasticsearchDSL\Query;
+
+use ONGR\ElasticsearchDSL\BuilderInterface;
+
+/**
+ * Represents Elasticsearch "limit" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-limit-query.html
+ */
+class LimitQuery implements BuilderInterface
+{
+    /**
+     * @var int
+     */
+    private $value;
+
+    /**
+     * @param int $value Number of documents (per shard) to execute on
+     */
+    public function __construct($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'limit';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        return [
+            'value' => $this->value,
+        ];
+    }
+}

src/Query/MatchAllQuery.php

@@ -15,7 +15,9 @@ use ONGR\ElasticsearchDSL\BuilderInterface;
 use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
- * Elasticsearch match_all query class.
+ * Represents Elasticsearch "bool" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-all-query.html
  */
 class MatchAllQuery implements BuilderInterface
 {

src/Query/MissingQuery.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\ElasticsearchDSL\Query;
+
+use ONGR\ElasticsearchDSL\BuilderInterface;
+use ONGR\ElasticsearchDSL\ParametersTrait;
+
+/**
+ * Represents Elasticsearch "missing" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-missing-query.html
+ */
+class MissingQuery implements BuilderInterface
+{
+    use ParametersTrait;
+
+    /**
+     * @var string
+     */
+    private $field;
+
+    /**
+     * Constructor.
+     *
+     * @param string $field      Field name
+     * @param array  $parameters Optional parameters
+     */
+    public function __construct($field, array $parameters = [])
+    {
+        $this->field = $field;
+        $this->setParameters($parameters);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'missing';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        $query = ['field' => $this->field];
+        $output = $this->processArray($query);
+
+        return $output;
+    }
+}

src/Query/NestedQuery.php

@@ -15,7 +15,9 @@ use ONGR\ElasticsearchDSL\BuilderInterface;
 use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
- * Elasticsearch nested query class.
+ * Represents Elasticsearch "nested" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-nested-query.html
  */
 class NestedQuery implements BuilderInterface
 {
@@ -34,11 +36,13 @@ class NestedQuery implements BuilderInterface
     /**
      * @param string           $path
      * @param BuilderInterface $query
+     * @param array            $parameters
      */
-    public function __construct($path, BuilderInterface $query)
+    public function __construct($path, BuilderInterface $query, array $parameters = [])
     {
         $this->path = $path;
         $this->query = $query;
+        $this->parameters = $parameters;
     }
 
     /**

src/Query/PrefixQuery.php

@@ -11,13 +11,48 @@
 
 namespace ONGR\ElasticsearchDSL\Query;
 
-use ONGR\ElasticsearchDSL\Filter\PrefixFilter;
+use ONGR\ElasticsearchDSL\BuilderInterface;
+use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
  * Represents Elasticsearch "prefix" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-prefix-query.html
  */
-class PrefixQuery extends PrefixFilter
+class PrefixQuery implements BuilderInterface
 {
+    use ParametersTrait;
+
+    /**
+     * @var string
+     */
+    protected $field;
+
+    /**
+     * @var string
+     */
+    protected $value;
+
+    /**
+     * @param string $field      Field name.
+     * @param string $value      Value.
+     * @param array  $parameters Optional parameters.
+     */
+    public function __construct($field, $value, array $parameters = [])
+    {
+        $this->field = $field;
+        $this->value = $value;
+        $this->setParameters($parameters);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'prefix';
+    }
+
     /**
      * {@inheritdoc}
      */

src/Query/RegexpQuery.php

@@ -15,7 +15,9 @@ use ONGR\ElasticsearchDSL\BuilderInterface;
 use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
- * Regexp query class.
+ * Represents Elasticsearch "regexp" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-regexp-query.html
  */
 class RegexpQuery implements BuilderInterface
 {

src/Query/ScriptQuery.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\ElasticsearchDSL\Query;
+
+use ONGR\ElasticsearchDSL\BuilderInterface;
+use ONGR\ElasticsearchDSL\ParametersTrait;
+
+/**
+ * Represents Elasticsearch "script" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-script-query.html
+ */
+class ScriptQuery implements BuilderInterface
+{
+    use ParametersTrait;
+
+    /**
+     * @var string
+     */
+    private $script;
+
+    /**
+     * @param string $script     Script
+     * @param array  $parameters Optional parameters
+     */
+    public function __construct($script, array $parameters = [])
+    {
+        $this->script = $script;
+        $this->setParameters($parameters);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'script';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        $query = ['inline' => $this->script];
+        $output = $this->processArray($query);
+
+        return ['script' => $output];
+    }
+}

src/Query/TermQuery.php

@@ -15,7 +15,9 @@ use ONGR\ElasticsearchDSL\BuilderInterface;
 use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
- * Elasticsearch term query class.
+ * Represents Elasticsearch "term" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-term-query.html
  */
 class TermQuery implements BuilderInterface
 {

src/Query/TermsQuery.php

@@ -15,7 +15,9 @@ use ONGR\ElasticsearchDSL\BuilderInterface;
 use ONGR\ElasticsearchDSL\ParametersTrait;
 
 /**
- * Elasticsearch terms query class.
+ * Represents Elasticsearch "terms" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-terms-query.html
  */
 class TermsQuery implements BuilderInterface
 {
@@ -29,17 +31,19 @@ class TermsQuery implements BuilderInterface
     /**
      * @var array
      */
-    private $tags;
+    private $terms;
 
     /**
-     * @param string $field
-     * @param array  $tags
-     * @param array  $parameters
+     * Constructor.
+     *
+     * @param string $field      Field name
+     * @param array  $terms      An array of terms
+     * @param array  $parameters Optional parameters
      */
-    public function __construct($field, $tags, array $parameters = [])
+    public function __construct($field, $terms, array $parameters = [])
     {
         $this->field = $field;
-        $this->tags = $tags;
+        $this->terms = $terms;
         $this->setParameters($parameters);
     }
 
@@ -57,7 +61,7 @@ class TermsQuery implements BuilderInterface
     public function toArray()
     {
         $query = [
-            $this->field => $this->tags,
+            $this->field => $this->terms,
         ];
 
         $output = $this->processArray($query);

src/Query/TypeQuery.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\ElasticsearchDSL\Query;
+
+use ONGR\ElasticsearchDSL\BuilderInterface;
+
+/**
+ * Represents Elasticsearch "type" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-type-query.html
+ */
+class TypeQuery implements BuilderInterface  // TODO: add test
+{
+    /**
+     * @var string
+     */
+    private $type;
+
+    /**
+     * Constructor.
+     *
+     * @param string $type Type name
+     */
+    public function __construct($type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'type';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        return [
+            'value' => $this->type,
+        ];
+    }
+}

tests/Filter/RangeFilterTest.php

@@ -35,9 +35,14 @@ class RangeFilterTest extends \PHPUnit_Framework_TestCase
             // Case #1.
             ['', [], [], ['' => []]],
             // Case #2.
-            ['foo', [1, 5], [], ['foo' => [0 => 1, 1 => 5]]],
+            ['foo', ['gte' => 1, 'lte' => 5], [], ['foo' => ['gte' => 1, 'lte' => 5]]],
             // Case #3.
-            ['test', ['foo', 'bar'], ['type' => 'acme'], ['test' => [0 => 'foo', 1 => 'bar'], 'type' => 'acme']],
+            [
+                'test',
+                ['gte' => 1, 'lte' => 5],
+                ['type' => 'acme'],
+                ['test' => ['gte' => 1, 'lte' => 5, 'type' => 'acme']]
+            ],
         ];
     }
 

tests/Query/ExistsQueryTest.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\ElasticsearchDSL\Tests\Query;
+
+use ONGR\ElasticsearchDSL\Query\ExistsQuery;
+
+/**
+ * Unit test for ExistsQuery.
+ */
+class ExistsQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Tests ExistsQuery#toArray() method.
+     */
+    public function testToArray()
+    {
+        $query = new ExistsQuery('bar');
+        $this->assertEquals(['field' => 'bar'], $query->toArray());
+    }
+}

tests/Query/GeoBoundingBoxQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Filter\GeoBoundingBoxFilter;
+
+class GeoBoundingBoxQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Test if exception is thrown when geo points are not set.
+     *
+     * @expectedException \LogicException
+     */
+    public function testGeoBoundBoxFilterException()
+    {
+        $filter = new GeoBoundingBoxFilter('location', []);
+        $filter->toArray();
+    }
+
+    /**
+     * Data provider for testToArray().
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case #1 (2 values).
+            [
+                'location',
+                [
+                    ['lat' => 40.73, 'lon' => -74.1],
+                    ['lat' => 40.01, 'lon' => -71.12],
+                ],
+                ['parameter' => 'value'],
+                [
+                    'location' => [
+                        'top_left' => ['lat' => 40.73, 'lon' => -74.1],
+                        'bottom_right' => ['lat' => 40.01, 'lon' => -71.12],
+                    ],
+                    'parameter' => 'value',
+                ],
+            ],
+            // Case #2 (4 values).
+            [
+                'location',
+                [40.73, -74.1, 40.01, -71.12],
+                ['parameter' => 'value'],
+                [
+                    'location' => [
+                        'top' => 40.73,
+                        'left' => -74.1,
+                        'bottom' => 40.01,
+                        'right' => -71.12,
+                    ],
+                    'parameter' => 'value',
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * Tests toArray method.
+     *
+     * @param string $field      Field name.
+     * @param array  $values     Bounding box values.
+     * @param array  $parameters Optional parameters.
+     * @param array  $expected   Expected result.
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $values, $parameters, $expected)
+    {
+        $filter = new GeoBoundingBoxFilter($field, $values, $parameters);
+        $result = $filter->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}

tests/Query/GeoDistanceQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\GeoDistanceQuery;
+
+class GeoDistanceQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Data provider for testToArray().
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case #1.
+            [
+                'location',
+                '200km',
+                ['lat' => 40, 'lon' => -70],
+                [],
+                ['distance' => '200km', 'location' => ['lat' => 40, 'lon' => -70]],
+            ],
+            // Case #2.
+            [
+                'location',
+                '20km',
+                ['lat' => 0, 'lon' => 0],
+                ['parameter' => 'value'],
+                ['distance' => '20km', 'location' => ['lat' => 0, 'lon' => 0], 'parameter' => 'value'],
+            ],
+        ];
+    }
+
+    /**
+     * Tests toArray() method.
+     *
+     * @param string $field      Field name.
+     * @param string $distance   Distance.
+     * @param array  $location   Location.
+     * @param array  $parameters Optional parameters.
+     * @param array  $expected   Expected result.
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $distance, $location, $parameters, $expected)
+    {
+        $query = new GeoDistanceQuery($field, $distance, $location, $parameters);
+        $result = $query->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}

tests/Query/GeoDistanceRangeQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\GeoDistanceRangeQuery;
+
+class GeoDistanceRangeQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Data provider to testToArray.
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case #1.
+            [
+                'location',
+                ['from' => '200km', 'to' => '400km'],
+                ['lat' => 40, 'lon' => -70],
+                [],
+                ['from' => '200km', 'to' => '400km', 'location' => ['lat' => 40, 'lon' => -70]],
+            ],
+            // Case #2.
+            [
+                'location',
+                ['from' => '150km', 'to' => '180km'],
+                ['lat' => 0, 'lon' => 0],
+                ['parameter' => 'value'],
+                ['from' => '150km', 'to' => '180km', 'location' => ['lat' => 0, 'lon' => 0], 'parameter' => 'value'],
+            ],
+        ];
+    }
+
+    /**
+     * Tests toArray method.
+     *
+     * @param string $field      Field name.
+     * @param array  $range      Distance range.
+     * @param array  $location   Location.
+     * @param array  $parameters Optional parameters.
+     * @param array  $expected   Expected result.
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $range, $location, $parameters, $expected)
+    {
+        $query = new GeoDistanceRangeQuery($field, $range, $location, $parameters);
+        $result = $query->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}

tests/Query/GeoPolygonQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\GeoPolygonQuery;
+
+class GeoPolygonQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Data provider to testToArray.
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case #1.
+            [
+                'location',
+                [
+                    ['lat' => 20, 'lon' => -80],
+                    ['lat' => 30, 'lon' => -40],
+                    ['lat' => 70, 'lon' => -90],
+                ],
+                [],
+                [
+                    'location' => [
+                        'points' => [
+                            ['lat' => 20, 'lon' => -80],
+                            ['lat' => 30, 'lon' => -40],
+                            ['lat' => 70, 'lon' => -90],
+                        ],
+                    ],
+                ],
+            ],
+            // Case #2.
+            [
+                'location',
+                [],
+                ['parameter' => 'value'],
+                [
+                    'location' => ['points' => []],
+                    'parameter' => 'value',
+                ],
+            ],
+            // Case #3.
+            [
+                'location',
+                [
+                    ['lat' => 20, 'lon' => -80],
+                ],
+                ['parameter' => 'value'],
+                [
+                    'location' => [
+                        'points' => [['lat' => 20, 'lon' => -80]],
+                    ],
+                    'parameter' => 'value',
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * Tests toArray method.
+     *
+     * @param string $field      Field name.
+     * @param array  $points     Polygon's points.
+     * @param array  $parameters Optional parameters.
+     * @param array  $expected   Expected result.
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $points, $parameters, $expected)
+    {
+        $filter = new GeoPolygonQuery($field, $points, $parameters);
+        $result = $filter->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}

tests/Query/GeoShapeQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\GeoShapeQuery;
+
+class GeoShapeQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Tests toArray() method.
+     */
+    public function testToArray()
+    {
+        $filter = new GeoShapeQuery(['param1' => 'value1']);
+        $filter->addShape('location', 'envelope', [[13, 53], [14, 52]]);
+
+        $expected = [
+            'location' => [
+                'shape' => [
+                    'type' => 'envelope',
+                    'coordinates' => [[13, 53], [14, 52]],
+                ],
+            ],
+            'param1' => 'value1',
+        ];
+
+        $this->assertEquals($expected, $filter->toArray());
+    }
+
+    /**
+     * Test for toArray() in case of pre-indexed shape.
+     */
+    public function testToArrayIndexed()
+    {
+        $filter = new GeoShapeQuery(['param1' => 'value1']);
+        $filter->addPreIndexedShape('location', 'DEU', 'countries', 'shapes', 'location');
+
+        $expected = [
+            'location' => [
+                'indexed_shape' => [
+                    'id' => 'DEU',
+                    'type' => 'countries',
+                    'index' => 'shapes',
+                    'path' => 'location',
+                ],
+            ],
+            'param1' => 'value1',
+        ];
+
+        $this->assertEquals($expected, $filter->toArray());
+    }
+}

tests/Query/GeohashCellQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\GeohashCellQuery;
+
+class GeohashCellQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Data provider for testToArray().
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case #1.
+            [
+                'location',
+                ['lat' => 40, 'lon' => -70],
+                [],
+                ['location' => ['lat' => 40, 'lon' => -70]],
+            ],
+            // Case #2.
+            [
+                'location',
+                ['lat' => 0, 'lon' => 0],
+                ['parameter' => 'value'],
+                ['location' => ['lat' => 0, 'lon' => 0], 'parameter' => 'value'],
+            ],
+        ];
+    }
+
+    /**
+     * Tests toArray() method.
+     *
+     * @param string $field      Field name.
+     * @param array  $location   Location.
+     * @param array  $parameters Optional parameters.
+     * @param array  $expected   Expected result.
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $location, $parameters, $expected)
+    {
+        $query = new GeohashCellQuery($field, $location, $parameters);
+        $result = $query->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}

tests/Query/LimitQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\LimitQuery;
+
+class LimitQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Test for query toArray() method.
+     */
+    public function testToArray()
+    {
+        $query = new LimitQuery(3);
+        $expectedResult = ['value' => 3];
+        $this->assertEquals($expectedResult, $query->toArray());
+    }
+}

tests/Query/MissingQueryTest.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\ElasticsearchDSL\Tests\Unit\DSL\Query;
+
+use ONGR\ElasticsearchDSL\Query\MissingQuery;
+
+class MissingQueryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Data provider to testGetToArray.
+     *
+     * @return array
+     */
+    public function getArrayDataProvider()
+    {
+        return [
+            // Case 1.
+            ['user', [], ['field' => 'user']],
+            // Case 2.
+            ['user', ['existence' => true], ['field' => 'user', 'existence' => true]],
+        ];
+    }
+
+    /**
+     * Test for query toArray() method.
+     *
+     * @param string $field
+     * @param array  $parameters
+     * @param array  $expected
+     *
+     * @dataProvider getArrayDataProvider
+     */
+    public function testToArray($field, $parameters, $expected)
+    {
+        $query = new MissingQuery($field, $parameters);
+        $result = $query->toArray();
+        $this->assertEquals($expected, $result);
+    }
+}