Merge remote-tracking branch 'remotes/origin/6.x' into 7.x

# Conflicts:
#	composer.json

composer.json

@@ -11,8 +11,8 @@
         }
     ],
     "require": {
-        "php": "^7.1",
-        "symfony/serializer": "^3.0|^4.0|^5.0",
+        "php": "^7.0",
+        "symfony/serializer": "^3.0|^4.0",
         "paragonie/random_compat": "*"
     },
     "require-dev": {

src/Query/TermLevel/TermsSetQuery.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\TermLevel;
+
+use ONGR\ElasticsearchDSL\BuilderInterface;
+use ONGR\ElasticsearchDSL\ParametersTrait;
+
+/**
+ * Represents Elasticsearch "terms_set" query.
+ *
+ * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-terms-set-query.html
+ */
+class TermsSetQuery implements BuilderInterface
+{
+    use ParametersTrait;
+
+    const MINIMUM_SHOULD_MATCH_TYPE_FIELD = 'minimum_should_match_field';
+    const MINIMUM_SHOULD_MATCH_TYPE_SCRIPT = 'minimum_should_match_script';
+
+    /**
+     * @var string
+     */
+    private $field;
+
+    /**
+     * @var array
+     */
+    private $terms;
+
+    /**
+     * Constructor.
+     *
+     * @param string $field      Field name
+     * @param array  $terms      An array of terms
+     * @param array  $parameters Parameters
+     */
+    public function __construct($field, $terms, array $parameters)
+    {
+        $this->field = $field;
+        $this->terms = $terms;
+        $this->validateParameters($parameters);
+        $this->setParameters($parameters);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'terms_set';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        $query = [
+            'terms' => $this->terms,
+        ];
+
+        return [$this->getType() => [
+            $this->field => $this->processArray($query),
+        ]];
+    }
+
+    private function validateParameters(array $parameters)
+    {
+        if (!isset($parameters[self::MINIMUM_SHOULD_MATCH_TYPE_FIELD]) &&
+            !isset($parameters[self::MINIMUM_SHOULD_MATCH_TYPE_SCRIPT])
+        ) {
+            $message = "Either minimum_should_match_field or minimum_should_match_script must be set.";
+            throw new \InvalidArgumentException($message);
+        }
+    }
+}

tests/Unit/Query/TermLevel/TermsSetQueryTest.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\Query\TermLevel;
+
+use ONGR\ElasticsearchDSL\Query\TermLevel\TermsSetQuery;
+
+class TermsSetQueryTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * Tests toArray().
+     */
+    public function testToArray()
+    {
+        $terms = ['php', 'c++', 'java'];
+        $parameters = ['minimum_should_match_field' => 'required_matches'];
+        $query = new TermsSetQuery('programming_languages', $terms, $parameters);
+        $expected = [
+            'terms_set' => [
+                'programming_languages' => [
+                    'terms' => ['php', 'c++', 'java'],
+                    'minimum_should_match_field' => 'required_matches',
+                ]
+            ],
+        ];
+
+        $this->assertEquals($expected, $query->toArray());
+    }
+
+    public function testItThrowsAaExceptionWhenMinimumShouldMatchFieldOrMinimumShouldMatchScriptIsNotGiven()
+    {
+        $message = "Either minimum_should_match_field or minimum_should_match_script must be set.";
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage($message);
+
+        $terms = ['php', 'c++', 'java'];
+        new TermsSetQuery('programming_languages', $terms, []);
+    }
+}