SoapClient large refactoring & tests update

src/BeSimple/SoapClient/Curl/Http/HttpAuthenticationInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace BeSimple\SoapClient\Curl\Http;
+
+interface HttpAuthenticationInterface
+{
+    const AUTHENTICATION_TYPE_ANY = CURLAUTH_ANY;
+    const AUTHENTICATION_TYPE_BASIC = CURLAUTH_BASIC;
+    const AUTHENTICATION_TYPE_DIGEST = CURLAUTH_DIGEST;
+
+    /**
+     * @return string choice from self::AUTHENTICATION_TYPE_ANY|self::AUTHENTICATION_TYPE_BASIC|self::AUTHENTICATION_TYPE_DIGEST
+     */
+    public function getAuthenticationType();
+}