Adding some s3 sigv4 integ tests

tests/Aws/Tests/S3/Integration/Sigv4Test.php

@@ -0,0 +1,75 @@
+<?php
+namespace Aws\Tests\S3\Integration;
+
+use Aws\S3\S3Client;
+use Aws\S3\Model\ClearBucket;
+
+/**
+ * @group integration
+ */
+class Sigv4Test extends \Aws\Tests\IntegrationTestCase
+{
+    /** @var S3Client */
+    protected $client;
+
+    /** @var string */
+    protected $bucket;
+
+    public static function setUpBeforeClass()
+    {
+        $client = self::getServiceBuilder()->get('s3', array('signature' => 'v4'));
+        $bucket = self::getResourcePrefix() . '-s3-test';
+        $client->createBucket(array('Bucket' => $bucket));
+        self::log("Waiting for the bucket to exist");
+        $client->waitUntil('bucket_exists', array('Bucket' => $bucket));
+        sleep(5);
+    }
+
+    public static function tearDownAfterClass()
+    {
+        $client = self::getServiceBuilder()->get('s3', array('signature' => 'v4'));
+        $bucket = self::getResourcePrefix() . '-s3-test';
+        self::log("Clearing the contents of the {$bucket} bucket");
+        $clear = new ClearBucket($client, $bucket);
+        $clear->clear();
+        self::log("Deleting the {$bucket} bucket");
+        $client->deleteBucket(array('Bucket' => $bucket));
+    }
+
+    public function setUp()
+    {
+        $this->bucket = self::getResourcePrefix() . '-s3-test';
+        $this->client = $this->getServiceBuilder()->get('s3', array('signature' => 'v4'));
+    }
+
+    public function testSignsEmptyRequests()
+    {
+        $this->client->headBucket(array('Bucket' => $this->bucket));
+    }
+
+    public function testSignsEmptyPayloadCorrectly()
+    {
+        $this->client->putObject(array(
+            'Bucket' => $this->bucket,
+            'Key'    => 'test',
+            'Body'   => ''
+        ));
+        $this->client->deleteObject(array(
+            'Bucket' => $this->bucket,
+            'Key'    => 'test'
+        ));
+    }
+
+    public function testSignsPayload()
+    {
+        $this->client->putObject(array(
+            'Bucket' => $this->bucket,
+            'Key'    => 'test2',
+            'Body'   => 'testing...1234'
+        ));
+        $this->client->deleteObject(array(
+            'Bucket' => $this->bucket,
+            'Key'    => 'test2'
+        ));
+    }
+}