Add integration test to cover query serialization of flattened lists

tests/Integ/SqsBatchSerializationTest.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Aws\Test\Integ;
+
+use Aws\Sqs\SqsClient;
+
+class SqsBatchSerializationTest extends \PHPUnit_Framework_TestCase
+{
+    use IntegUtils;
+
+    public static function setUpBeforeClass()
+    {
+        $queue = self::getIntegTestingQueueName();
+        $client = self::getSdk()->createSqs();
+        self::cleanup($client, $queue);
+        self::log('Creating queue ' . $queue);
+        $client->createQueue(['QueueName' => $queue]);
+    }
+
+    public static function tearDownAfterClass()
+    {
+        $queue = self::getIntegTestingQueueName();
+        $client = self::getSdk()->createSqs();
+        self::cleanup($client, $queue);
+    }
+
+    public function testDeleteMessageBatchSendsCorrectly()
+    {
+        $client = self::getSdk()->createSqs();
+
+        $queue = $client->getQueueUrl(['QueueName' => self::getIntegTestingQueueName()]);
+        for ($i = 0; $i < 10; $i++) {
+            $client->sendMessage([
+                'QueueUrl' => $queue->get('QueueUrl'),
+                'MessageBody' => json_encode(['testing' => 'testing']),
+            ]);
+        }
+
+        $messages = $client->receiveMessage([
+            'QueueUrl' => $queue->get('QueueUrl'),
+            'MaxNumberOfMessages' => 10,
+        ]);
+
+        $client->deleteMessageBatch([
+            'QueueUrl' => $queue->get('QueueUrl'),
+            'Entries' => array_map(
+                function (array $message) {
+                    return [
+                        'Id' => $message['MessageId'],
+                        'ReceiptHandle' => $message['ReceiptHandle'],
+                    ];
+                },
+                $messages->get('Messages')
+            )
+        ]);
+    }
+
+
+    private static function cleanup(SqsClient $client, $queue)
+    {
+        try {
+            $queue = $client->getQueueUrl([
+                'QueueName' => $queue,
+            ]);
+
+            $client->deleteQueue(['QueueUrl' => $queue->get('QueueUrl')]);
+
+            return true;
+        } catch (\Exception $e) {
+            return false;
+        }
+    }
+
+    private static function getIntegTestingQueueName()
+    {
+        return self::getResourcePrefix() . '-integ-testing-queue';
+    }
+}