diff --git a/src/BeSimple/SoapClient/WsdlDownloader.php b/src/BeSimple/SoapClient/WsdlDownloader.php
index e3a5d0b..1c1d413 100644
--- a/src/BeSimple/SoapClient/WsdlDownloader.php
+++ b/src/BeSimple/SoapClient/WsdlDownloader.php
@@ -13,6 +13,8 @@
 namespace BeSimple\SoapClient;
 
 use BeSimple\SoapClient\Curl\Curl;
+use BeSimple\SoapClient\Xml\RemoteFileResolver;
+use BeSimple\SoapClient\Xml\XmlFileDomDocumentProcessor;
 use BeSimple\SoapCommon\Cache;
 use BeSimple\SoapCommon\Helper;
 use DOMDocument;
@@ -30,6 +32,11 @@ use Exception;
  */
 class WsdlDownloader
 {
+    public static function instantiateDownloader()
+    {
+        return new self();
+    }
+
     /**
      * @param Curl $curl
      * @param string $wsdlPath WSDL file URL/path
@@ -39,10 +46,10 @@ class WsdlDownloader
      */
     public function getWsdlPath(Curl $curl, $wsdlPath, $wsdCacheType, $resolveRemoteIncludes = true)
     {
-        $isRemoteFile = $this->isRemoteFile($wsdlPath);
+        $isRemoteFile = RemoteFileResolver::instantiateResolver()->isRemoteFile($wsdlPath);
         $isCacheEnabled = $wsdCacheType === Cache::TYPE_NONE ? false : Cache::isEnabled();
         if ($isCacheEnabled === true) {
-            $cacheFilePath = Cache::getDirectory().DIRECTORY_SEPARATOR.'wsdl_'.md5($wsdlPath).'.cache';
+            $cacheFilePath = Cache::getDirectory() . DIRECTORY_SEPARATOR . 'wsdl_' . md5($wsdlPath) . '.cache';
             $isCacheExisting = file_exists($cacheFilePath);
             if ($isCacheExisting) {
                 $fileModificationTime = filemtime($cacheFilePath);
@@ -54,46 +61,17 @@ class WsdlDownloader
                 $isCacheExisting = $isCacheValid = false;
             }
             if ($isCacheExisting === false || $isCacheValid === false) {
-                $this->writeCacheFile($curl, $wsdCacheType, $wsdlPath, $cacheFilePath, $resolveRemoteIncludes, $isRemoteFile);
+                XmlFileDomDocumentProcessor::writeCacheFile($curl, $wsdCacheType, $wsdlPath, $cacheFilePath, $resolveRemoteIncludes, $isRemoteFile);
             }
 
             return $this->getLocalWsdlPath($cacheFilePath);
 
-        } else {
-
-            if ($isRemoteFile === true) {
-                return $wsdlPath;
-            }
-
-            return $this->getLocalWsdlPath($wsdlPath);
         }
-    }
-
-    private function writeCacheFile(Curl $curl, $cacheType, $wsdlPath, $cacheFilePath, $resolveRemoteIncludes, $isRemoteFile)
-    {
         if ($isRemoteFile === true) {
-            $curlResponse = $curl->executeCurlWithCachedSession($wsdlPath);
-            if ($curlResponse->curlStatusSuccess()) {
-                if (mb_strlen($curlResponse->getResponseBody()) === 0) {
-                    throw new Exception('Could not write WSDL cache file: empty curl response from: '.$wsdlPath);
-                }
-                if ($resolveRemoteIncludes === true) {
-                    $document = $this->getXmlFileDomDocument($curl, $cacheType, $curlResponse->getResponseBody(), $wsdlPath);
-                    $this->saveXmlDomDocument($document, $cacheFilePath);
-                } else {
-                    file_put_contents($cacheFilePath, $curlResponse->getResponseBody());
-                }
-            } else {
-                throw new Exception('Could not write WSDL cache file: Download failed with message: '.$curlResponse->getCurlErrorMessage());
-            }
-        } else {
-            if (file_exists($wsdlPath)) {
-                $document = $this->getXmlFileDomDocument($curl, $cacheType, file_get_contents($wsdlPath));
-                $this->saveXmlDomDocument($document, $cacheFilePath);
-            } else {
-                throw new Exception('Could write WSDL cache file: local file does not exist: '.$wsdlPath);
-            }
+            return $wsdlPath;
         }
+
+        return $this->getLocalWsdlPath($wsdlPath);
     }
 
     private function getLocalWsdlPath($wsdlPath)
@@ -104,164 +82,6 @@ class WsdlDownloader
 
         }
 
-        throw new Exception('Could not download WSDL: local file does not exist: '.$wsdlPath);
-    }
-
-    /**
-     * @param string $wsdlPath File URL/path
-     * @return boolean
-     */
-    private function isRemoteFile($wsdlPath)
-    {
-        $parsedUrlOrFalse = @parse_url($wsdlPath);
-        if ($parsedUrlOrFalse !== false) {
-            if (isset($parsedUrlOrFalse['scheme']) && substr($parsedUrlOrFalse['scheme'], 0, 4) === 'http') {
-
-                return true;
-            }
-
-            return false;
-        }
-
-        throw new Exception('Could not determine wsdlPath is remote: '.$wsdlPath);
-    }
-
-    /**
-     * Resolves remote WSDL/XSD includes within the WSDL files.
-     *
-     * @param Curl $curl
-     * @param int $cacheType
-     * @param string  $xmlFileSource  XML file contents
-     * @param boolean $parentFilePath Parent file name
-     * @return DOMDocument
-     */
-    private function getXmlFileDomDocument(Curl $curl, $cacheType, $xmlFileSource, $parentFilePath = null)
-    {
-        $document = new DOMDocument('1.0', 'utf-8');
-        if ($document->loadXML($xmlFileSource) === false) {
-            throw new Exception('Could not save downloaded WSDL cache: '.$xmlFileSource);
-        }
-
-        $xpath = new DOMXPath($document);
-        $this->updateXmlDocument($curl, $cacheType, $xpath, Helper::PFX_WSDL, Helper::NS_WSDL, 'location', $parentFilePath);
-        $this->updateXmlDocument($curl, $cacheType, $xpath, Helper::PFX_XML_SCHEMA, Helper::NS_XML_SCHEMA, 'schemaLocation', $parentFilePath);
-
-        return $document;
-    }
-
-    private function saveXmlDomDocument(DOMDocument $document, $cacheFilePath)
-    {
-        try {
-            $xmlContents = $document->saveXML();
-            if ($xmlContents === '') {
-                throw new Exception('Could not write WSDL cache file: DOMDocument returned empty XML file');
-            }
-            file_put_contents($cacheFilePath, $xmlContents);
-        } catch (Exception $e) {
-            unlink($cacheFilePath);
-            throw new Exception('Could not write WSDL cache file: save method returned error: ' . $e->getMessage());
-        }
-    }
-
-    private function updateXmlDocument(
-        Curl $curl,
-        $cacheType,
-        DOMXPath $xpath,
-        $schemaPrefix,
-        $schemaUrl,
-        $locationAttributeName,
-        $parentFilePath = null
-    ) {
-        $xpath->registerNamespace($schemaPrefix, $schemaUrl);
-        $nodes = $xpath->query('.//'.$schemaPrefix.':include | .//'.$schemaPrefix.':import');
-        if ($nodes->length > 0) {
-            foreach ($nodes as $node) {
-                /** @var DOMElement $node */
-                $locationPath = $node->getAttribute($locationAttributeName);
-                if ($locationPath !== '') {
-                    if ($this->isRemoteFile($locationPath)) {
-                        $node->setAttribute(
-                            $locationAttributeName,
-                            $this->getWsdlPath(
-                                $curl,
-                                $locationPath,
-                                $cacheType,
-                                true
-                            )
-                        );
-                    } elseif ($parentFilePath !== null) {
-                        $node->setAttribute(
-                            $locationAttributeName,
-                            $this->getWsdlPath(
-                                $curl,
-                                $this->resolveRelativePathInUrl($parentFilePath, $locationPath),
-                                $cacheType,
-                                true
-                            )
-                        );
-                    }
-                }
-            }
-        }
-    }
-
-    /**
-     * Resolves the relative path to base into an absolute.
-     *
-     * @param string $base     Base path
-     * @param string $relative Relative path
-     *
-     * @return string
-     */
-    private function resolveRelativePathInUrl($base, $relative)
-    {
-        $urlParts = parse_url($base);
-
-        // combine base path with relative path
-        if (isset($urlParts['path']) && mb_strlen($relative) > 0 && '/' === $relative{0}) {
-            // $relative is absolute path from domain (starts with /)
-            $path = $relative;
-        } elseif (isset($urlParts['path']) && strrpos($urlParts['path'], '/') === (strlen($urlParts['path']) )) {
-            // base path is directory
-            $path = $urlParts['path'].$relative;
-        } elseif (isset($urlParts['path'])) {
-            // strip filename from base path
-            $path = substr($urlParts['path'], 0, strrpos($urlParts['path'], '/')).'/'.$relative;
-        } else {
-            // no base path
-            $path = '/'.$relative;
-        }
-
-        // foo/./bar ==> foo/bar
-        // remove double slashes
-        $path = preg_replace(array('#/\./#', '#/+#'), '/', $path);
-
-        // split path by '/'
-        $parts = explode('/', $path);
-
-        // resolve /../
-        foreach ($parts as $key => $part) {
-            if ($part === '..') {
-                $keyToDelete = $key - 1;
-                while ($keyToDelete > 0) {
-                    if (isset($parts[$keyToDelete])) {
-                        unset($parts[$keyToDelete]);
-
-                        break;
-                    }
-
-                    $keyToDelete--;
-                }
-
-                unset($parts[$key]);
-            }
-        }
-
-        $hostname = $urlParts['scheme'].'://'.$urlParts['host'];
-        if (isset($urlParts['port'])) {
-            $hostname .= ':'.$urlParts['port'];
-        }
-
-        return $hostname.implode('/', $parts);
+        throw new Exception('Could not download WSDL: local file does not exist: ' . $wsdlPath);
     }
 }
diff --git a/src/BeSimple/SoapClient/Xml/Path/RelativePathResolver.php b/src/BeSimple/SoapClient/Xml/Path/RelativePathResolver.php
new file mode 100644
index 0000000..2417478
--- /dev/null
+++ b/src/BeSimple/SoapClient/Xml/Path/RelativePathResolver.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml\Path;
+
+class RelativePathResolver
+{
+    public static function instantiateResolver()
+    {
+        return new self();
+    }
+
+    /**
+     * Resolves the relative path to base into an absolute.
+     *
+     * @param string $base     Base path
+     * @param string $relative Relative path
+     * @return string
+     */
+    public function resolveRelativePathInUrl($base, $relative)
+    {
+        $urlParts = parse_url($base);
+        $isRelativePathAbsolute = 0 === strpos($relative, '/') || 0 === strpos($relative, '..');
+
+        // combine base path with relative path
+        if (isset($urlParts['path']) && mb_strlen($relative) > 0 && $isRelativePathAbsolute) {
+            // $relative is absolute path from domain (starts with /)
+            $path = $relative;
+        } elseif (isset($urlParts['path']) && strrpos($urlParts['path'], '/') === (strlen($urlParts['path']) )) {
+            // base path is directory
+            $path = $urlParts['path'].$relative;
+        } elseif (isset($urlParts['path'])) {
+            // strip filename from base path
+            $path = substr($urlParts['path'], 0, strrpos($urlParts['path'], '/')).'/'.$relative;
+        } else {
+            // no base path
+            $path = '/'.$relative;
+        }
+
+        // foo/./bar ==> foo/bar
+        // remove double slashes
+        $path = preg_replace(array('#/\./#', '#/+#'), '/', $path);
+
+        // split path by '/'
+        $parts = explode('/', $path);
+
+        // resolve /../
+        foreach ($parts as $key => $part) {
+            if ($part === '..') {
+                $keyToDelete = $key - 1;
+                while ($keyToDelete > 0) {
+                    if (isset($parts[$keyToDelete])) {
+                        unset($parts[$keyToDelete]);
+
+                        break;
+                    }
+
+                    $keyToDelete--;
+                }
+
+                unset($parts[$key]);
+            }
+        }
+
+        $hostname = $urlParts['scheme'].'://'.$urlParts['host'];
+        if (isset($urlParts['port'])) {
+            $hostname .= ':'.$urlParts['port'];
+        }
+        $implodedParts = implode('/', $parts);
+        if (substr($implodedParts, 0, 1) !== '/') {
+            $implodedParts = '/'.$implodedParts;
+        }
+
+        return $hostname.$implodedParts;
+    }
+}
diff --git a/src/BeSimple/SoapClient/Xml/RemoteFileResolver.php b/src/BeSimple/SoapClient/Xml/RemoteFileResolver.php
new file mode 100644
index 0000000..0f6d0e7
--- /dev/null
+++ b/src/BeSimple/SoapClient/Xml/RemoteFileResolver.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml;
+
+use Exception;
+
+class RemoteFileResolver
+{
+    public static function instantiateResolver()
+    {
+        return new self();
+    }
+
+    /**
+     * @param string $wsdlPath File URL/path
+     * @return boolean
+     */
+    public function isRemoteFile($wsdlPath)
+    {
+        $parsedUrlOrFalse = @parse_url($wsdlPath);
+        if ($parsedUrlOrFalse !== false) {
+            if (isset($parsedUrlOrFalse['scheme']) && strpos($parsedUrlOrFalse['scheme'], 'http') === 0) {
+
+                return true;
+            }
+
+            return false;
+        }
+
+        throw new Exception('Could not determine wsdlPath is remote: '.$wsdlPath);
+    }
+}
diff --git a/src/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacer.php b/src/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacer.php
new file mode 100644
index 0000000..d915b15
--- /dev/null
+++ b/src/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacer.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml;
+
+use BeSimple\SoapClient\Curl\Curl;
+use BeSimple\SoapClient\WsdlDownloader;
+use DOMElement;
+use DOMXPath;
+
+class XmlDomDocumentImportReplacer
+{
+    public static function instantiateReplacer()
+    {
+        return new self();
+    }
+
+    public function updateXmlDocument(
+        Curl $curl,
+        $cacheType,
+        DOMXPath $xpath,
+        $schemaPrefix,
+        $schemaUrl,
+        $locationAttributeName,
+        $parentFilePath = null
+    ) {
+        $xpath->registerNamespace($schemaPrefix, $schemaUrl);
+        $nodes = $xpath->query('.//'.$schemaPrefix.':include | .//'.$schemaPrefix.':import');
+        if ($nodes->length > 0) {
+            foreach ($nodes as $node) {
+                /** @var DOMElement $node */
+                $locationPath = $node->getAttribute($locationAttributeName);
+                if ($locationPath !== '') {
+                    if (RemoteFileResolver::instantiateResolver()->isRemoteFile($locationPath)) {
+                        $node->setAttribute(
+                            $locationAttributeName,
+                            WsdlDownloader::instantiateDownloader()->getWsdlPath(
+                                $curl,
+                                $locationPath,
+                                $cacheType,
+                                true
+                            )
+                        );
+                    } elseif ($parentFilePath !== null) {
+                        $node->setAttribute(
+                            $locationAttributeName,
+                            WsdlDownloader::instantiateDownloader()->getWsdlPath(
+                                $curl,
+                                self::resolveRelativePathInUrl($parentFilePath, $locationPath),
+                                $cacheType,
+                                true
+                            )
+                        );
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Resolves the relative path to base into an absolute.
+     *
+     * @param string $base     Base path
+     * @param string $relative Relative path
+     *
+     * @return string
+     */
+    private static function resolveRelativePathInUrl($base, $relative)
+    {
+        $urlParts = parse_url($base);
+        $isRelativePathAbsolute = 0 === strpos($relative, '/') || 0 === strpos($relative, '..');
+
+        // combine base path with relative path
+        if (isset($urlParts['path']) && mb_strlen($relative) > 0 && $isRelativePathAbsolute) {
+            // $relative is absolute path from domain (starts with /)
+            $path = $relative;
+        } elseif (isset($urlParts['path']) && strrpos($urlParts['path'], '/') === (strlen($urlParts['path']) )) {
+            // base path is directory
+            $path = $urlParts['path'].$relative;
+        } elseif (isset($urlParts['path'])) {
+            // strip filename from base path
+            $path = substr($urlParts['path'], 0, strrpos($urlParts['path'], '/')).'/'.$relative;
+        } else {
+            // no base path
+            $path = '/'.$relative;
+        }
+
+        // foo/./bar ==> foo/bar
+        // remove double slashes
+        $path = preg_replace(array('#/\./#', '#/+#'), '/', $path);
+
+        // split path by '/'
+        $parts = explode('/', $path);
+
+        // resolve /../
+        foreach ($parts as $key => $part) {
+            if ($part === '..') {
+                $keyToDelete = $key - 1;
+                while ($keyToDelete > 0) {
+                    if (isset($parts[$keyToDelete])) {
+                        unset($parts[$keyToDelete]);
+
+                        break;
+                    }
+
+                    $keyToDelete--;
+                }
+
+                unset($parts[$key]);
+            }
+        }
+
+        $hostname = $urlParts['scheme'].'://'.$urlParts['host'];
+        if (isset($urlParts['port'])) {
+            $hostname .= ':'.$urlParts['port'];
+        }
+        if (substr($hostname, -1) !== '/') {
+            $hostname .= '/';
+        }
+
+        return $hostname.implode('/', $parts);
+    }
+}
diff --git a/src/BeSimple/SoapClient/Xml/XmlFileDomDocumentProcessor.php b/src/BeSimple/SoapClient/Xml/XmlFileDomDocumentProcessor.php
new file mode 100644
index 0000000..1e8f079
--- /dev/null
+++ b/src/BeSimple/SoapClient/Xml/XmlFileDomDocumentProcessor.php
@@ -0,0 +1,77 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml;
+
+use BeSimple\SoapClient\Curl\Curl;
+use BeSimple\SoapCommon\Helper;
+use DOMDocument;
+use DOMXPath;
+use Exception;
+
+class XmlFileDomDocumentProcessor
+{
+    public static function writeCacheFile(Curl $curl, $cacheType, $wsdlPath, $cacheFilePath, $resolveRemoteIncludes, $isRemoteFile)
+    {
+        if ($isRemoteFile === true) {
+            $curlResponse = $curl->executeCurlWithCachedSession($wsdlPath);
+            if ($curlResponse->curlStatusSuccess()) {
+                if (mb_strlen($curlResponse->getResponseBody()) === 0) {
+                    throw new Exception('Could not write WSDL cache file: empty curl response from: '.$wsdlPath);
+                }
+                if ($resolveRemoteIncludes === true) {
+                    $document = self::getXmlFileDomDocument($curl, $cacheType, $curlResponse->getResponseBody(), $wsdlPath);
+                    self::saveXmlDomDocument($document, $cacheFilePath);
+                } else {
+                    file_put_contents($cacheFilePath, $curlResponse->getResponseBody());
+                }
+            } else {
+                throw new Exception('Could not write WSDL cache file: Download failed with message: '.$curlResponse->getCurlErrorMessage());
+            }
+        } else {
+            if (file_exists($wsdlPath)) {
+                $document = self::getXmlFileDomDocument($curl, $cacheType, file_get_contents($wsdlPath));
+                self::saveXmlDomDocument($document, $cacheFilePath);
+            } else {
+                throw new Exception('Could write WSDL cache file: local file does not exist: '.$wsdlPath);
+            }
+        }
+    }
+
+    /**
+     * Resolves remote WSDL/XSD includes within the WSDL files.
+     *
+     * @param Curl $curl
+     * @param int $cacheType
+     * @param string  $xmlFileSource  XML file contents
+     * @param boolean $parentFilePath Parent file name
+     * @return DOMDocument
+     */
+    private static function getXmlFileDomDocument(Curl $curl, $cacheType, $xmlFileSource, $parentFilePath = null)
+    {
+        $document = new DOMDocument('1.0', 'utf-8');
+        if ($document->loadXML($xmlFileSource) === false) {
+            throw new Exception('Could not save downloaded WSDL cache: '.$xmlFileSource);
+        }
+
+        $xpath = new DOMXPath($document);
+        $xmlDomDocumentImportReplacer = XmlDomDocumentImportReplacer::instantiateReplacer();
+        $xmlDomDocumentImportReplacer->updateXmlDocument($curl, $cacheType, $xpath, Helper::PFX_WSDL, Helper::NS_WSDL, 'location', $parentFilePath);
+        $xmlDomDocumentImportReplacer->updateXmlDocument($curl, $cacheType, $xpath, Helper::PFX_XML_SCHEMA, Helper::NS_XML_SCHEMA, 'schemaLocation', $parentFilePath);
+
+        return $document;
+    }
+
+    private static function saveXmlDomDocument(DOMDocument $document, $cacheFilePath)
+    {
+        try {
+            $xmlContents = $document->saveXML();
+            if ($xmlContents === '') {
+                throw new Exception('Could not write WSDL cache file: DOMDocument returned empty XML file');
+            }
+            file_put_contents($cacheFilePath, $xmlContents);
+        } catch (Exception $e) {
+            unlink($cacheFilePath);
+            throw new Exception('Could not write WSDL cache file: save method returned error: ' . $e->getMessage());
+        }
+    }
+}
diff --git a/tests/BeSimple/SoapClient/Xml/Path/RelativePathResolverTest.php b/tests/BeSimple/SoapClient/Xml/Path/RelativePathResolverTest.php
new file mode 100644
index 0000000..728554e
--- /dev/null
+++ b/tests/BeSimple/SoapClient/Xml/Path/RelativePathResolverTest.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml\Path;
+
+use PHPUnit_Framework_TestCase;
+
+class RelativePathResolverTest extends PHPUnit_Framework_TestCase
+{
+    /** @var RelativePathResolver */
+    private $relativePathResolver;
+
+    public function setUp()
+    {
+        $this->relativePathResolver = new RelativePathResolver();
+    }
+
+    /**
+     * @param string $base
+     * @param string $relative
+     * @param string $assertPath
+     * @dataProvider providePathInfo
+     */
+    public function testResolveRelativePathInUrl($base, $relative, $assertPath)
+    {
+        $path = $this->relativePathResolver->resolveRelativePathInUrl($base, $relative);
+
+        self::assertEquals($assertPath, $path);
+    }
+
+    public function providePathInfo()
+    {
+        return [
+            [
+                'http://endpoint-location.ltd/',
+                'Document1.xsd',
+                'http://endpoint-location.ltd/Document1.xsd',
+            ],
+            [
+                'http://endpoint-location.ltd:8080/endpoint/',
+                '../Schemas/Common/Document2.xsd',
+                'http://endpoint-location.ltd:8080/Schemas/Common/Document2.xsd',
+            ],
+            [
+                'http://endpoint-location.ltd/',
+                '../Schemas/Common/Document3.xsd',
+                'http://endpoint-location.ltd/Schemas/Common/Document3.xsd',
+            ],
+            [
+                'http://endpoint-location.ltd/',
+                '/Document4.xsd',
+                'http://endpoint-location.ltd/Document4.xsd',
+            ],
+            [
+                'http://endpoint-location.ltd',
+                '/Document5.xsd',
+                'http://endpoint-location.ltd/Document5.xsd',
+            ],
+            [
+                'http://endpoint-location.ltd',
+                'Document6.xsd',
+                'http://endpoint-location.ltd/Document6.xsd',
+            ]
+        ];
+    }
+}
diff --git a/tests/BeSimple/SoapClient/Xml/RemoteFileResolverTest.php b/tests/BeSimple/SoapClient/Xml/RemoteFileResolverTest.php
new file mode 100644
index 0000000..9e80a14
--- /dev/null
+++ b/tests/BeSimple/SoapClient/Xml/RemoteFileResolverTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml;
+
+use PHPUnit_Framework_TestCase;
+
+class RemoteFileResolverTest extends PHPUnit_Framework_TestCase
+{
+    const FILE_IS_REMOTE = true;
+    const FILE_IS_NOT_REMOTE = false;
+
+    /** @var RemoteFileResolver */
+    private $remoteFileResolver;
+
+    public function setUp()
+    {
+        $this->remoteFileResolver = new RemoteFileResolver();
+    }
+
+    /**
+     * @param string $wsdlPath
+     * @param bool $assertIsRemoteFile
+     * @dataProvider provideWsdlPaths
+     */
+    public function testIsRemoteFile($wsdlPath, $assertIsRemoteFile)
+    {
+        $isRemoteFile = $this->remoteFileResolver->isRemoteFile($wsdlPath);
+
+        self::assertEquals($assertIsRemoteFile, $isRemoteFile);
+    }
+
+    public function provideWsdlPaths()
+    {
+        return [
+            ['http://endpoint.tld/path/to/wsdl.wsdl', self::FILE_IS_REMOTE],
+            ['http://endpoint.tld:1944/path/to/wsdl.wsdl', self::FILE_IS_REMOTE],
+            ['path/to/wsdl.wsdl', self::FILE_IS_NOT_REMOTE],
+            ['../../path/to/wsdl.wsdl', self::FILE_IS_NOT_REMOTE],
+            ['/path/to/wsdl.wsdl', self::FILE_IS_NOT_REMOTE],
+        ];
+    }
+}
diff --git a/tests/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacerTest.php b/tests/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacerTest.php
new file mode 100644
index 0000000..0f2c4b9
--- /dev/null
+++ b/tests/BeSimple/SoapClient/Xml/XmlDomDocumentImportReplacerTest.php
@@ -0,0 +1,105 @@
+<?php
+
+namespace BeSimple\SoapClient\Xml;
+
+use BeSimple\SoapClient\Curl\Curl;
+use BeSimple\SoapClient\Curl\CurlOptionsBuilder;
+use BeSimple\SoapCommon\Cache;
+use BeSimple\SoapCommon\Helper;
+use DOMDocument;
+use DOMXPath;
+use PHPUnit_Framework_TestCase;
+
+class XmlDomDocumentImportReplacerTest extends PHPUnit_Framework_TestCase
+{
+    const NO_PARENT_FILE_PATH = null;
+
+    /** @var XmlDomDocumentImportReplacer */
+    private $xmlDomDocumentImportReplacer;
+
+    public function setUp()
+    {
+        $this->xmlDomDocumentImportReplacer = new XmlDomDocumentImportReplacer();
+    }
+
+    /**
+     * @param string $xmlSource
+     * @param Curl $curl
+     * @param string $schemaPrefix
+     * @param string $schemaUrl
+     * @param string $locationAttributeName
+     * @param string|null $parentFilePath
+     * @param string|null $assertImportXmlSource
+     * @dataProvider provideXmlDocumentData
+     */
+    public function testUpdateXmlDocument(
+        $xmlSource,
+        Curl $curl,
+        $schemaPrefix,
+        $schemaUrl,
+        $locationAttributeName,
+        $parentFilePath = null,
+        $assertImportXmlSource = null
+    ) {
+        $wsdl = new DOMDocument();
+        $wsdl->loadXML($xmlSource);
+
+        $this->xmlDomDocumentImportReplacer->updateXmlDocument(
+            $curl,
+            Cache::TYPE_NONE,
+            new DOMXPath($wsdl),
+            $schemaPrefix,
+            $schemaUrl,
+            $locationAttributeName,
+            $parentFilePath
+        );
+        $wsdlSource = $wsdl->saveHTML();
+
+        self::assertContains(
+            $assertImportXmlSource,
+            $wsdlSource
+        );
+    }
+
+    public function provideXmlDocumentData()
+    {
+        return [
+            'wsdlWithoutParentPath' => [
+                file_get_contents(__DIR__.'/testUpdateXmlDocument.wsdl'),
+                new Curl(CurlOptionsBuilder::buildDefault()),
+                Helper::PFX_WSDL,
+                Helper::NS_WSDL,
+                'location',
+                self::NO_PARENT_FILE_PATH,
+                '<xs:include schemaLocation="../Schemas/Common/Document1.xsd"></xs:include>'
+            ],
+            'schemaWithoutParentPath' => [
+                file_get_contents(__DIR__.'/testUpdateXmlDocument.wsdl'),
+                new Curl(CurlOptionsBuilder::buildDefault()),
+                Helper::PFX_XML_SCHEMA,
+                Helper::NS_XML_SCHEMA,
+                'schemaLocation',
+                self::NO_PARENT_FILE_PATH,
+                '<xs:include schemaLocation="../Schemas/Common/Document1.xsd"></xs:include>'
+            ],
+            'wsdlWithParentPath' => [
+                file_get_contents(__DIR__.'/testUpdateXmlDocument.wsdl'),
+                new Curl(CurlOptionsBuilder::buildDefault()),
+                Helper::PFX_WSDL,
+                Helper::NS_WSDL,
+                'location',
+                'http://endpoint-location.ltd:8080/endpoint/',
+                '<xs:include schemaLocation="../Schemas/Common/Document1.xsd"></xs:include>'
+            ],
+            'schemaWithParentPath' => [
+                file_get_contents(__DIR__.'/testUpdateXmlDocument.wsdl'),
+                new Curl(CurlOptionsBuilder::buildDefault()),
+                Helper::PFX_XML_SCHEMA,
+                Helper::NS_XML_SCHEMA,
+                'schemaLocation',
+                'http://endpoint-location.ltd:8080/endpoint/',
+                '<xs:include schemaLocation="http://endpoint-location.ltd:8080/Schemas/Common/Document1.xsd"></xs:include>'
+            ],
+        ];
+    }
+}
diff --git a/tests/BeSimple/SoapClient/Xml/testUpdateXmlDocument.wsdl b/tests/BeSimple/SoapClient/Xml/testUpdateXmlDocument.wsdl
new file mode 100644
index 0000000..209f0ca
--- /dev/null
+++ b/tests/BeSimple/SoapClient/Xml/testUpdateXmlDocument.wsdl
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<wsdl:definitions
+		xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+		xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
+		xmlns:ns="http://location.ltd/namespace1"
+		xmlns:ns2="http://location.ltd/namespace2"
+		xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
+		xmlns:tns="http://endpoint-location.tld:7654/ws"
+		xmlns:xs="http://www.w3.org/2001/XMLSchema" name="PushServerWSDL"
+		targetNamespace="http://location.ltd/target-namespace">
+	<wsdl:types>
+		<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://location.ltd/namespace1">
+		    <xs:include schemaLocation="../Schemas/Common/Document1.xsd"/>
+		</xs:schema>
+		<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://location.ltd/namespace2">
+		    <xs:include schemaLocation="../Schemas/Common/Document2.xsd"/>
+		</xs:schema>
+	</wsdl:types>
+	<wsdl:message name="ServerHeader">
+		<wsdl:part element="ns:serverHeader" name="serverHeader"/>
+	</wsdl:message>
+
+	<wsdl:portType name="Server">
+		<wsdl:operation name="SendPushMessage">
+			<wsdl:documentation>TEST-OPERATION-1</wsdl:documentation>
+			<wsdl:input message="tns:SendPushMessageRequest" name="SendPushMessageRequest"/>
+			<wsdl:output message="tns:SendPushMessageResponse" name="SendPushMessageResponse"/>
+			<wsdl:fault message="tns:SystemFault" name="systemFault"/>
+		</wsdl:operation>
+	</wsdl:portType>
+	<wsdl:binding name="ServerBinding" type="tns:Server">
+		<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
+		<wsdl:operation name="DummyMethod">
+			<soap:operation soapAction="http://endpoint-location.tld:7654/ep/v1" style="document"/>
+			<wsdl:input name="DummyMethodRequest">
+				<soap:body use="literal"/>
+			</wsdl:input>
+			<wsdl:output name="DummyMethodResponse">
+				<soap:body use="literal"/>
+			</wsdl:output>
+			<wsdl:fault name="soapServerFault">
+				<soap:fault name="soapServerFault" use="literal"/>
+			</wsdl:fault>
+		</wsdl:operation>
+	</wsdl:binding>
+	<wsdl:service name="ServerServices">
+		<wsdl:port binding="tns:ServerBinding" name="ServerServicesEndpoint">
+			<soap:address location="http://endpoint-location.tld:7654/ws/"/>
+		</wsdl:port>
+	</wsdl:service>
+</wsdl:definitions>
\ No newline at end of file