diff --git a/README.md b/README.md
index 07541b2..12c7424 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,7 @@ Features:
 * general statuses (In the requests/responses may to meet `canceled` or `cancelled` variants. They will be converted to general status like as `cancelled`.)
 
 TODO:
+* translate to English comments and system (error) messages
 * validation
 * implement method `card`
 * implement method `recurrent`
diff --git a/src/Exception/ExceptionFactory.php b/src/Exception/ExceptionFactory.php
index 019a18c..f2e64e8 100644
--- a/src/Exception/ExceptionFactory.php
+++ b/src/Exception/ExceptionFactory.php
@@ -39,7 +39,7 @@ class ExceptionFactory
      * @param $message
      * @param \Psr\Http\Message\RequestInterface $request
      * @param \Psr\Http\Message\ResponseInterface $response
-     * @return \ErrorException
+     * @return ErrorException
      */
     public static function createFromMessage($message, RequestInterface $request, ResponseInterface $response)
     {
diff --git a/src/Exception/UnitellerException.php b/src/Exception/UnitellerException.php
index 23749f0..1d9a9e1 100644
--- a/src/Exception/UnitellerException.php
+++ b/src/Exception/UnitellerException.php
@@ -8,8 +8,30 @@
 namespace Tmconsulting\Uniteller\Exception;
 
 use Http\Client\Exception\HttpException;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 
 class UnitellerException extends HttpException
 {
+    /**
+     * @param \Psr\Http\Message\RequestInterface $request
+     * @param \Psr\Http\Message\ResponseInterface $response
+     * @param \Exception|null $previous
+     * @return static
+     */
+    public static function create(
+        RequestInterface $request,
+        ResponseInterface $response,
+        \Exception $previous = null
+    ) {
+        $message = sprintf(
+            '[url] %s [http method] %s [status code] %s [reason phrase] %s',
+            $request->getRequestTarget(),
+            $request->getMethod(),
+            $response->getStatusCode(),
+            $response->getReasonPhrase()
+        );
 
+        return new static($message, $request, $response, $previous);
+    }
 }
\ No newline at end of file
diff --git a/src/Http/Format.php b/src/Http/Format.php
index 595934f..bde431e 100644
--- a/src/Http/Format.php
+++ b/src/Http/Format.php
@@ -8,6 +8,7 @@
 namespace Tmconsulting\Uniteller\Http;
 
 use BadMethodCallException;
+use Tmconsulting\Uniteller\Exception\FormatNotSupportedException;
 use Tmconsulting\Uniteller\Exception\RequestNotSupportedException;
 use Tmconsulting\Uniteller\Request\RequestInterface;
 use Tmconsulting\Uniteller;
@@ -42,6 +43,7 @@ final class Format
      * @param $format
      * @param $requestName
      * @return int
+     * @throws \Tmconsulting\Uniteller\Exception\FormatNotSupportedException
      * @throws \Tmconsulting\Uniteller\Exception\RequestNotSupportedException
      */
     public static function resolve($format, $requestName)
diff --git a/src/Http/HttpManager.php b/src/Http/HttpManager.php
index 8e3c5ca..31ee540 100644
--- a/src/Http/HttpManager.php
+++ b/src/Http/HttpManager.php
@@ -7,8 +7,8 @@
 
 namespace Tmconsulting\Uniteller\Http;
 
-use GuzzleHttp\Exception\RequestException;
 use GuzzleHttp\Psr7\Request;
+use Http\Client\Exception\RequestException;
 use Http\Client\HttpClient;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
diff --git a/src/Order/Order.php b/src/Order/Order.php
index 9bc3104..0bfe83a 100644
--- a/src/Order/Order.php
+++ b/src/Order/Order.php
@@ -504,9 +504,8 @@ public function setEOrderData($eOrderData)
         }
 
         foreach (explode(', ', $eOrderData) as $item) {
-            foreach (explode('=', $item) as list($key, $value)) {
-                $this->eOrderData[$key] = $value;
-            }
+            list($key, $value) = explode('=', $item);
+            $this->eOrderData[$key] = $value;
         }
 
         return $this;
diff --git a/tests/Cancel/CancelBuilderTest.php b/tests/Cancel/CancelBuilderTest.php
new file mode 100644
index 0000000..e70b9fb
--- /dev/null
+++ b/tests/Cancel/CancelBuilderTest.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Cancel;
+
+use Tmconsulting\Uniteller\Cancel\CancelBuilder;
+use Tmconsulting\Uniteller\Cancel\RVRReason;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class CancelBuilderTest extends TestCase
+{
+    public function testBuildObject()
+    {
+        $builder = new CancelBuilder();
+        $builder->setBillNumber(1);
+        $builder->setCurrency('RUB');
+        $builder->setRvrReason(RVRReason::SHOP);
+        $builder->setSelectFields([]);
+        $builder->setSubtotalP(10);
+
+        $expected = [
+            'Billnumber' => 1,
+            'Subtotal_P' => 10,
+            'Currency'   => 'RUB',
+            'RVRReason'  => RVRReason::SHOP,
+            'S_FIELDS'   => []
+        ];
+
+        $this->assertEquals($expected, $builder->toArray());
+    }
+}
\ No newline at end of file
diff --git a/tests/Cancel/CancelRequestTest.php b/tests/Cancel/CancelRequestTest.php
new file mode 100644
index 0000000..021c671
--- /dev/null
+++ b/tests/Cancel/CancelRequestTest.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Cancel;
+
+use Tmconsulting\Uniteller\Cancel\CancelRequest;
+use Tmconsulting\Uniteller\Http\HttpManagerInterface;
+use Tmconsulting\Uniteller\Order\Order;
+use Tmconsulting\Uniteller\Order\Status;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class CancelRequestTest extends TestCase
+{
+    public function testCanRequestHandleResponse()
+    {
+        $manager = $this->createMock(HttpManagerInterface::class);
+        $manager
+            ->expects($this->once())
+            ->method('request')
+            ->willReturn($this->getStubContents('cancel'));
+
+        $request = new CancelRequest();
+        /** @var \Tmconsulting\Uniteller\Order\Order $order */
+        foreach ($request->execute($manager) as $order) {
+            $this->assertInstanceOf(Order::class, $order);
+            $this->assertEquals('Value of address', $order->getAddress());
+            $this->assertEquals('Value of approvalcode', $order->getApprovalCode());
+            $this->assertEquals('Value of bankname', $order->getBankName());
+            $this->assertEquals('Value of billnumber', $order->getBillNumber());
+            $this->assertEquals('Value of bookingcom_id', $order->getBookingcomId());
+            $this->assertEquals('Value of bookingcom_pincode', $order->getBookingcomPincode());
+            $this->assertEquals('Value of card_idp', $order->getCardIdp());
+            $this->assertEquals('Value of cardholder', $order->getCardHolder());
+            $this->assertEquals('Value of cardnumber', $order->getCardNumber());
+            $this->assertEquals('Value of cardtype', $order->getCardType());
+            $this->assertEquals('Value of comment', $order->getComment());
+            $this->assertEquals('Value of currency', $order->getCurrency());
+            $this->assertEquals(true, $order->isCvc2());
+            $this->assertInstanceOf(\DateTime::class, $order->getDate());
+            $this->assertEquals('Value of email', $order->getEmail());
+            $this->assertEquals('Value of emoneytype', $order->getEMoneyType());
+            $this->assertEquals(['foo' => 'bar', 'baz' => 'bue'], $order->getEOrderData());
+            $this->assertEquals('Value of error_code', $order->getErrorCode());
+            $this->assertEquals('Value of error_comment', $order->getErrorComment());
+            $this->assertEquals('Value of firstname', $order->getFirstName());
+            $this->assertEquals('Value of gds_payment_purpose_id', $order->getGdsPaymentPurposeId());
+            $this->assertEquals('Value of idata', $order->getIData());
+            $this->assertEquals('Value of ipaddress', $order->getIp());
+            $this->assertEquals('Value of lastname', $order->getLastName());
+            $this->assertEquals('Value of loan_id', $order->getLoanId());
+            $this->assertEquals('Value of message', $order->getMessage());
+            $this->assertEquals('Value of middlename', $order->getMiddleName());
+            $this->assertEquals(true, $order->isNeedConfirm());
+            $this->assertEquals('Value of ordernumber', $order->getOrderNumber());
+            $this->assertEquals('Value of parent_order_number', $order->getParentOrderNumber());
+            $this->assertEquals('Value of paymenttype', $order->getPaymentType());
+            $this->assertEquals('Value of phone', $order->getPhone());
+            $this->assertEquals('Value of pt_code', $order->getPtCode());
+            $this->assertEquals('Value of recommendation', $order->getRecommendation());
+            $this->assertEquals('Value of response_code', $order->getResponseCode());
+            $this->assertEquals(Status::PAID, $order->getStatus());
+            $this->assertEquals('Value of total', $order->getTotal());
+            $this->assertInstanceOf(\DateTime::class, $order->getPacketDate());
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/Cancel/RVRReasonTest.php b/tests/Cancel/RVRReasonTest.php
new file mode 100644
index 0000000..596d66e
--- /dev/null
+++ b/tests/Cancel/RVRReasonTest.php
@@ -0,0 +1,22 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Cancel;
+
+use Tmconsulting\Uniteller\Cancel\RVRReason;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class RVRReasonTest extends TestCase
+{
+    public function testConstValuesEqualsDocumentationValues()
+    {
+        $this->assertEquals(RVRReason::SHOP, 1);
+        $this->assertEquals(RVRReason::CARDHOLDER, 2);
+        $this->assertEquals(RVRReason::FRAUD, 3);
+    }
+}
\ No newline at end of file
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index a432d2b..054d027 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -7,17 +7,20 @@
 
 namespace Tmconsulting\Uniteller\Tests;
 
-
+use Tmconsulting\Uniteller\ArraybleInterface;
+use Tmconsulting\Uniteller\Cancel\CancelRequest;
+use Tmconsulting\Uniteller\Client;
+use Tmconsulting\Uniteller\Exception\NotImplementedException;
+use Tmconsulting\Uniteller\Http\HttpManagerInterface;
 use Tmconsulting\Uniteller\Payment\PaymentInterface;
+use Tmconsulting\Uniteller\Request\RequestInterface;
 use Tmconsulting\Uniteller\Signature\SignatureInterface;
-use Tmconsulting\Uniteller\Client;
 
 class ClientTest extends TestCase
 {
-    public function testEmptyConstructor()
+    public function testShouldBeConstructedWithoutArguments()
     {
-        $reflect = new \ReflectionClass(Client::class);
-        $this->assertEmpty($reflect->getConstructor()->getParameters());
+        new Client();
     }
 
     public function testOptionsAccessorsAndMutators()
@@ -66,4 +69,188 @@ public function testSetOptionsUseArrayNotation()
 
         $this->assertSame($true, $uniteller->getOptions());
     }
+
+    public function testGivenArgumentShouldBeImplementHttpManagerInterface()
+    {
+        $part1 = 'Argument 1 passed to ' . Client::class . '::setHttpManager()';
+        $part2 = HttpManagerInterface::class;
+
+        $client = new Client();
+        try {
+            $client->setHttpManager(new \stdClass());
+        } catch (\Exception $e) { // PHP 5.6
+            // Argument 1 passed to Tmconsulting\Uniteller\Client::setHttpManager()
+            // must be an instance of Tmconsulting\Uniteller\Http\HttpManagerInterface,
+            // instance of stdClass given
+            // 4096 - is equivalet to the error above.
+            $this->assertEquals(4096, $e->getCode());
+            $this->assertStringStartsWith($part1, $e->getMessage());
+            $this->assertContains($part2, $e->getMessage());
+        } catch (\Throwable $e) { // PHP 7
+            $this->assertStringStartsWith($part1, $e->getMessage());
+            $this->assertContains($part2, $e->getMessage());
+        }
+
+        $client->setHttpManager($this->createMock(HttpManagerInterface::class));
+        $this->assertInstanceOf(HttpManagerInterface::class, $client->getHttpManager());
+    }
+
+    /**
+     * @return array
+     */
+    public function provideMethodsWhenHaveAnFirstArgumentIsRequestInterface()
+    {
+        return [
+            ['registerCancelRequest'],
+            ['registerResultsRequest'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideMethodsWhenHaveAnFirstArgumentIsRequestInterface
+     * @param $methodName
+     */
+    public function testGivenArgumentShouldBeTypeHintedAsRequestInterface($methodName)
+    {
+        $reflect = new \ReflectionClass(Client::class);
+        $first   = $reflect->getMethod($methodName)->getParameters()[0]->getClass()->getName();
+
+        $this->assertEquals(RequestInterface::class, $first);
+    }
+
+    public function testCanRequestMethodsMayReturnCorrectResult()
+    {
+        $client = new Client();
+        $client->registerCancelRequest($this->createMock(RequestInterface::class));
+        $client->registerResultsRequest($this->createMock(RequestInterface::class));
+
+        $this->assertInstanceOf(RequestInterface::class, $client->getCancelRequest());
+        $this->assertInstanceOf(RequestInterface::class, $client->getResultsRequest());
+    }
+
+    public function testShouldBePaymentMethodBuildCorrectArray()
+    {
+        $payment = $this->createMock(PaymentInterface::class);
+        $payment
+            ->expects($this->once())
+            ->method('execute')
+            ->willReturnCallback(function ($array) {
+                $this->assertArrayHasKey('Shop_IDP', $array);
+                $this->assertArrayHasKey('Password', $array);
+                $this->assertArrayHasKey('Signature', $array);
+            });
+
+        $client = new Client();
+        $client->registerPayment($payment);
+
+        $client->payment([]);
+    }
+
+    public function testCanCancelMethodGiveControlToTheRequestClass()
+    {
+        $request = $this->createMock(RequestInterface::class);
+        $request
+            ->expects($this->at(1))
+            ->method('execute')
+            ->willReturnCallback(function ($manager, $array) {
+                $this->assertInstanceOf(HttpManagerInterface::class, $manager);
+                $this->assertTrue(is_array($array));
+            });
+
+        $client = new Client();
+        $client->registerCancelRequest($request);
+        $client->registerResultsRequest($request);
+
+        $client->cancel([]);
+        $client->results([]);
+
+        $this->assertInstanceOf(HttpManagerInterface::class, $client->getHttpManager());
+    }
+
+    public function testCanUseCustomHttpManager()
+    {
+        $cancel = $this->createMock(CancelRequest::class);
+        $cancel
+            ->expects($this->once())
+            ->method('execute');
+
+        $client = new Client();
+        $client->setHttpManager(new HttpManagerStub());
+        $client->registerCancelRequest($cancel);
+
+        $client->cancel([]);
+
+        $this->assertInstanceOf(HttpManagerStub::class, $client->getHttpManager());
+    }
+
+    /**
+     * @return array
+     */
+    public function provideUnsupportedRequestMethods()
+    {
+        return [
+            ['reccurent'],
+            ['confirm'],
+            ['card'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideUnsupportedRequestMethods
+     * @param $methodName
+     */
+    public function testShouldBeUnsupportedMethodsThrowException($methodName)
+    {
+        $this->expectException(NotImplementedException::class);
+        $this->expectExceptionMessageRegExp('/In current moment, feature \[.*\] not implemented./');
+        $client = new Client();
+        $client->{$methodName}([]);
+    }
+
+    public function provideActionsWhichShouldBeAcceptArrayble()
+    {
+        return [
+            ['payment'],
+            ['cancel'],
+            ['results'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideActionsWhichShouldBeAcceptArrayble
+     * @param $methodName
+     */
+    public function testShouldBeActionsAcceptClassesWhichImplementArraybleInterface($methodName)
+    {
+        $request = $this->createMock(RequestInterface::class);
+        $request->method('execute');
+
+        $client = new Client();
+        $client->registerResultsRequest($request);
+        $client->registerCancelRequest($request);
+        $client->registerPayment($this->createMock(PaymentInterface::class));
+
+        $arrayble = $this->createMock(ArraybleInterface::class);
+        $arrayble
+            ->method('toArray')
+            ->willReturn([]);
+
+        $client->{$methodName}($arrayble);
+    }
+
+}
+
+class HttpManagerStub implements HttpManagerInterface {
+
+    /**
+     * @param $uri
+     * @param string $method
+     * @param null $data
+     * @param array $headers
+     * @return string
+     */
+    public function request($uri, $method = 'POST', $data = null, array $headers = [])
+    {
+        // TODO: Implement request() method.
+    }
 }
\ No newline at end of file
diff --git a/tests/Error/ResponseCodeTest.php b/tests/Error/ResponseCodeTest.php
new file mode 100644
index 0000000..a066a25
--- /dev/null
+++ b/tests/Error/ResponseCodeTest.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Error;
+
+use Tmconsulting\Uniteller\Error\ResponseCode;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class ResponseCodeTest extends TestCase
+{
+    public function provideParametersToConverter()
+    {
+        return [
+            ['AS000'],
+            ['AS100'],
+            ['AS101'],
+            ['AS102'],
+            ['AS104'],
+            ['AS105'],
+            ['AS107'],
+            ['AS108'],
+            ['AS109'],
+            ['AS200'],
+            ['AS998'],
+            ['UNKNOWN'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideParametersToConverter
+     * @param $code
+     */
+    public function testShouldBeConvertErrorCodeToHumanMessage($code)
+    {
+        $method = $code === 'UNKNOWN' ? 'assertNull' : 'assertNotEmpty';
+        $this->{$method}(ResponseCode::message($code));
+    }
+}
\ No newline at end of file
diff --git a/tests/Exception/ExceptionFactoryTest.php b/tests/Exception/ExceptionFactoryTest.php
new file mode 100644
index 0000000..4ebc106
--- /dev/null
+++ b/tests/Exception/ExceptionFactoryTest.php
@@ -0,0 +1,59 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Exception;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Tmconsulting\Uniteller\Exception\AuthConfirmIsNotAllowedException;
+use Tmconsulting\Uniteller\Exception\AuthenticationException;
+use Tmconsulting\Uniteller\Exception\BadFieldFormatException;
+use Tmconsulting\Uniteller\Exception\ErrorException;
+use Tmconsulting\Uniteller\Exception\ExceptionFactory;
+use Tmconsulting\Uniteller\Exception\MandatoryParameterException;
+use Tmconsulting\Uniteller\Exception\NotSupportedSFieldException;
+use Tmconsulting\Uniteller\Exception\OperationFailedException;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class ExceptionFactoryTest extends TestCase
+{
+    /**
+     * @return array
+     */
+    public function provideErrorMessages()
+    {
+        return [
+            [AuthConfirmIsNotAllowedException::class, 'Authorization confirm is not allowed'],
+            [AuthenticationException::class, 'Authentication error'],
+            [BadFieldFormatException::class, 'Field %fieldName% has bad format'],
+            [MandatoryParameterException::class, 'Mandatory parameter \'%fieldName%\' is not present in the request'],
+            [MandatoryParameterException::class, 'Mandatory parameter \'%fieldName%\''],
+            [NotSupportedSFieldException::class, 'S_FIELDS contains field \'%name%\' which is not allowed'],
+            [NotSupportedSFieldException::class, 'S_FIELDS contains field \'%name%\''],
+            [OperationFailedException::class, 'The operation failed'],
+            [ErrorException::class, null],
+        ];
+    }
+
+    /**
+     * @dataProvider provideErrorMessages
+     * @param $e
+     * @param $message
+     * @throws \ErrorException
+     */
+    public function testItShouldBeCreateExceptionFromMessage($e, $message)
+    {
+        $this->expectException($e);
+
+        throw ExceptionFactory::createFromMessage(
+            $message,
+            $this->createMock(RequestInterface::class),
+            $this->createMock(ResponseInterface::class)
+        );
+    }
+}
\ No newline at end of file
diff --git a/tests/Http/FormatTest.php b/tests/Http/FormatTest.php
new file mode 100644
index 0000000..17b30e7
--- /dev/null
+++ b/tests/Http/FormatTest.php
@@ -0,0 +1,49 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Http;
+
+use BadMethodCallException;
+use Tmconsulting\Uniteller\Exception\FormatNotSupportedException;
+use Tmconsulting\Uniteller\Exception\RequestNotSupportedException;
+use Tmconsulting\Uniteller\Http\Format;
+use Tmconsulting\Uniteller\Request\RequestInterface;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class FormatTest extends TestCase
+{
+    public function testCanNotResolveUnsupportedRequest()
+    {
+        $this->expectException(RequestNotSupportedException::class);
+        $this->expectExceptionMessage('Request [unknown] not supported here.');
+
+        Format::resolveXml('unknown');
+    }
+
+    public function testCanNotResolveUnsupportedFormat()
+    {
+        $this->expectException(FormatNotSupportedException::class);
+        $this->expectExceptionMessage('Format [xml] not supported for request [recurrent].');
+
+        Format::resolveXml(RequestInterface::REQUEST_RECURRENT);
+    }
+
+    public function testCanCallBadMagicStaticMethod()
+    {
+        $this->expectException(BadMethodCallException::class);
+        $this->expectExceptionMessage('Method [resolvingJson] not found.');
+
+        Format::resolvingJson('unknown');
+    }
+
+    public function testCanResolveSupportedFormat()
+    {
+        $value = Format::resolveXml(RequestInterface::REQUEST_CONFIRM);
+        $this->assertEquals(3, $value);
+    }
+}
\ No newline at end of file
diff --git a/tests/Http/HttpManagerTest.php b/tests/Http/HttpManagerTest.php
new file mode 100644
index 0000000..b956b85
--- /dev/null
+++ b/tests/Http/HttpManagerTest.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Http;
+
+use GuzzleHttp\Client as GuzzleClient;
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\HandlerStack;
+use GuzzleHttp\Psr7\Request;
+use GuzzleHttp\Psr7\Response;
+use Http\Adapter\Guzzle6\Client as GuzzleAdapter;
+use Tmconsulting\Uniteller\Exception\AuthConfirmIsNotAllowedException;
+use Tmconsulting\Uniteller\Exception\AuthenticationException;
+use Tmconsulting\Uniteller\Exception\UnitellerException;
+use Tmconsulting\Uniteller\Http\HttpManager;
+use Tmconsulting\Uniteller\Request\RequestInterface;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class HttpManagerTest extends TestCase
+{
+    public function testCanBuildRequestToExecute()
+    {
+        $manager = $this->http([
+            new Response(200, [], $this->getStubContents('cancel')),
+        ]);
+
+        $this->assertEquals(
+            $this->getStubContents('cancel'),
+            $manager->request(RequestInterface::REQUEST_CANCEL)
+        );
+    }
+
+    public function testBehaviorIfServerReturnError()
+    {
+        $this->expectException(UnitellerException::class);
+
+        $manager = $this->http([
+            new RequestException(
+                'Error Communicating with Server',
+                new Request('GET', 'test'),
+                new Response(500)
+            )
+        ]);
+
+        $manager->request(RequestInterface::REQUEST_CANCEL);
+    }
+
+    public function testCreatingExceptionsFromPayloadErrorText()
+    {
+        $this->expectException(AuthConfirmIsNotAllowedException::class);
+
+        $manager = $this->http([
+            new Response(200, [], 'ERROR: Authorization confirm is not allowed')
+        ]);
+
+        $manager->request(RequestInterface::REQUEST_CANCEL);
+    }
+
+    public function testCreatingExceptionsFromXmlResponse()
+    {
+        $this->expectException(AuthenticationException::class);
+
+        $manager = $this->http([
+            new Response(200, [], $this->getStubContents('error'))
+        ]);
+
+        $manager->request(RequestInterface::REQUEST_CANCEL);
+    }
+
+    public function testThrownBasicExceptionIfStatusNotIncludedInTheRange()
+    {
+        $this->expectException(UnitellerException::class);
+
+        $manager = $this->http([new Response(302, [])]);
+
+        $manager->request(RequestInterface::REQUEST_CANCEL);
+    }
+
+    /**
+     * @param $queue
+     * @return \Tmconsulting\Uniteller\Http\HttpManager
+     */
+    protected function http($queue)
+    {
+        $mock = new MockHandler($queue);
+
+        $httpClient = new GuzzleAdapter(new GuzzleClient([
+            'handler' => HandlerStack::create($mock)
+        ]));
+
+        return new HttpManager($httpClient, [
+            'base_uri' => '',
+            'shop_id'  => '',
+            'login'    => '',
+            'password' => '',
+        ]);
+    }
+}
\ No newline at end of file
diff --git a/tests/Order/StatusTest.php b/tests/Order/StatusTest.php
new file mode 100644
index 0000000..e9b5a82
--- /dev/null
+++ b/tests/Order/StatusTest.php
@@ -0,0 +1,42 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Order;
+
+use Tmconsulting\Uniteller\Order\Status;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class StatusTest extends TestCase
+{
+    /**
+     * @return array
+     */
+    public function provideAvailableUnitellerStatuses()
+    {
+        return [
+            [Status::NEWEST, 'new'],
+            [Status::AUTHORIZED, 'authorized'],
+            [Status::NOT_AUTHORIZED, 'not authorized'],
+            [Status::PAID, 'paid'],
+            [Status::CANCELLED, 'cancelled'],
+            [Status::CANCELLED, 'canceled'],
+            [Status::WAITING, 'waiting'],
+            [null, 'unknown'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideAvailableUnitellerStatuses
+     * @param $expected
+     * @param $name
+     */
+    public function testShouldBeStatusResolverAlwaysReturnCorrectResult($expected, $name)
+    {
+        $this->assertEquals($expected, Status::resolve($name));
+    }
+}
\ No newline at end of file
diff --git a/tests/Payment/PaymentTest.php b/tests/Payment/PaymentTest.php
new file mode 100644
index 0000000..2b7bbcc
--- /dev/null
+++ b/tests/Payment/PaymentTest.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Payment;
+
+use Tmconsulting\Uniteller\Payment\Payment;
+use Tmconsulting\Uniteller\Payment\UriInterface;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class PaymentTest extends TestCase
+{
+    public function testCanPaymentRequestReceiveUri()
+    {
+        $payment = new Payment();
+        $results = $payment->execute(['q' => 'banana'], ['base_uri' => 'https://google.com']);
+
+        $this->assertInstanceOf(UriInterface::class, $results);
+        $this->assertEquals('https://google.com/pay?q=banana', $results->getUri());
+    }
+}
\ No newline at end of file
diff --git a/tests/Results/ResultsRequestTest.php b/tests/Results/ResultsRequestTest.php
new file mode 100644
index 0000000..06f3611
--- /dev/null
+++ b/tests/Results/ResultsRequestTest.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * Created by Roquie.
+ * E-mail: roquie0@gmail.com
+ * GitHub: Roquie
+ * Date: 17/05/2017
+ */
+
+namespace Tmconsulting\Uniteller\Tests\Results;
+
+use Tmconsulting\Uniteller\Http\HttpManagerInterface;
+use Tmconsulting\Uniteller\Order\Order;
+use Tmconsulting\Uniteller\Order\Status;
+use Tmconsulting\Uniteller\Results\ResultsRequest;
+use Tmconsulting\Uniteller\Tests\TestCase;
+
+class ResultsRequestTest extends TestCase
+{
+    public function testCanRequestHandleResponse()
+    {
+        $manager = $this->createMock(HttpManagerInterface::class);
+        $manager
+            ->expects($this->once())
+            ->method('request')
+            ->willReturn($this->getStubContents('cancel'));
+
+        $request = new ResultsRequest();
+        /** @var \Tmconsulting\Uniteller\Order\Order $order */
+        foreach ($request->execute($manager) as $order) {
+            $this->assertInstanceOf(Order::class, $order);
+            $this->assertEquals('Value of address', $order->getAddress());
+            $this->assertEquals('Value of approvalcode', $order->getApprovalCode());
+            $this->assertEquals('Value of bankname', $order->getBankName());
+            $this->assertEquals('Value of billnumber', $order->getBillNumber());
+            $this->assertEquals('Value of bookingcom_id', $order->getBookingcomId());
+            $this->assertEquals('Value of bookingcom_pincode', $order->getBookingcomPincode());
+            $this->assertEquals('Value of card_idp', $order->getCardIdp());
+            $this->assertEquals('Value of cardholder', $order->getCardHolder());
+            $this->assertEquals('Value of cardnumber', $order->getCardNumber());
+            $this->assertEquals('Value of cardtype', $order->getCardType());
+            $this->assertEquals('Value of comment', $order->getComment());
+            $this->assertEquals('Value of currency', $order->getCurrency());
+            $this->assertEquals(true, $order->isCvc2());
+            $this->assertInstanceOf(\DateTime::class, $order->getDate());
+            $this->assertEquals('Value of email', $order->getEmail());
+            $this->assertEquals('Value of emoneytype', $order->getEMoneyType());
+            $this->assertEquals(['foo' => 'bar', 'baz' => 'bue'], $order->getEOrderData());
+            $this->assertEquals('Value of error_code', $order->getErrorCode());
+            $this->assertEquals('Value of error_comment', $order->getErrorComment());
+            $this->assertEquals('Value of firstname', $order->getFirstName());
+            $this->assertEquals('Value of gds_payment_purpose_id', $order->getGdsPaymentPurposeId());
+            $this->assertEquals('Value of idata', $order->getIData());
+            $this->assertEquals('Value of ipaddress', $order->getIp());
+            $this->assertEquals('Value of lastname', $order->getLastName());
+            $this->assertEquals('Value of loan_id', $order->getLoanId());
+            $this->assertEquals('Value of message', $order->getMessage());
+            $this->assertEquals('Value of middlename', $order->getMiddleName());
+            $this->assertEquals(true, $order->isNeedConfirm());
+            $this->assertEquals('Value of ordernumber', $order->getOrderNumber());
+            $this->assertEquals('Value of parent_order_number', $order->getParentOrderNumber());
+            $this->assertEquals('Value of paymenttype', $order->getPaymentType());
+            $this->assertEquals('Value of phone', $order->getPhone());
+            $this->assertEquals('Value of pt_code', $order->getPtCode());
+            $this->assertEquals('Value of recommendation', $order->getRecommendation());
+            $this->assertEquals('Value of response_code', $order->getResponseCode());
+            $this->assertEquals(Status::PAID, $order->getStatus());
+            $this->assertEquals('Value of total', $order->getTotal());
+            $this->assertInstanceOf(\DateTime::class, $order->getPacketDate());
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/SignatureTest.php b/tests/Signature/SignatureTest.php
similarity index 90%
rename from tests/SignatureTest.php
rename to tests/Signature/SignatureTest.php
index 9a39895..c1a8ba7 100644
--- a/tests/SignatureTest.php
+++ b/tests/Signature/SignatureTest.php
@@ -5,9 +5,10 @@
  * GitHub: Roquie
  */
 
-namespace Tmconsulting\Uniteller\Tests;
+namespace Tmconsulting\Uniteller\Tests\Signature;
 
 use Tmconsulting\Uniteller\Signature\Signature;
+use Tmconsulting\Uniteller\Tests\TestCase;
 
 class SignatureTest extends TestCase
 {
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 043bb61..f0b63ee 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -6,5 +6,12 @@
 
 class TestCase extends PHPUnit_Framework_TestCase
 {
-
+    /**
+     * @param $filename
+     * @return bool|string
+     */
+    protected function getStubContents($filename)
+    {
+        return file_get_contents(__DIR__ . "/stub/$filename.xml");
+    }
 }
\ No newline at end of file
diff --git a/tests/stub/cancel.xml b/tests/stub/cancel.xml
new file mode 100644
index 0000000..e0925ed
--- /dev/null
+++ b/tests/stub/cancel.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<unitellerresult firstcode="" secondcode="" count="1">
+    <orders>
+        <order>
+            <ordernumber>Value of ordernumber</ordernumber>
+            <response_code>Value of response_code</response_code>
+            <recommendation>Value of recommendation</recommendation>
+            <message>Value of message</message>
+            <comment>Value of comment</comment>
+            <date>10.03.2017 15:42:42</date>
+            <total>Value of total</total>
+            <currency>Value of currency</currency>
+            <cardtype>Value of cardtype</cardtype>
+            <emoneytype>Value of emoneytype</emoneytype>
+            <cardnumber>Value of cardnumber</cardnumber>
+            <eorderdata>foo=bar, baz=bue</eorderdata>
+            <lastname>Value of lastname</lastname>
+            <firstname>Value of firstname</firstname>
+            <middlename>Value of middlename</middlename>
+            <bookingcom_id>Value of bookingcom_id</bookingcom_id>
+            <bookingcom_pincode>Value of bookingcom_pincode</bookingcom_pincode>
+            <gds_payment_purpose_id>Value of gds_payment_purpose_id</gds_payment_purpose_id>
+            <idata>Value of idata</idata>
+            <need_confirm>1</need_confirm>
+            <loan_id>Value of loan_id</loan_id>
+            <card_idp>Value of card_idp</card_idp>
+            <parent_order_number>Value of parent_order_number</parent_order_number>
+            <address>Value of address</address>
+            <email>Value of email</email>
+            <status>paid</status>
+            <pt_code>Value of pt_code</pt_code>
+            <approvalcode>Value of approvalcode</approvalcode>
+            <cvc2>Value of cvc2</cvc2>
+            <cardholder>Value of cardholder</cardholder>
+            <ipaddress>Value of ipaddress</ipaddress>
+            <billnumber>Value of billnumber</billnumber>
+            <bankname>Value of bankname</bankname>
+            <status>Value of status</status>
+            <error_code>Value of error_code</error_code>
+            <error_comment>Value of error_comment</error_comment>
+            <packetdate>10.03.2017 15:42:42</packetdate>
+            <paymenttype>Value of paymenttype</paymenttype>
+            <phone>Value of phone</phone>
+        </order>
+    </orders>
+</unitellerresult>
\ No newline at end of file
diff --git a/tests/stub/error.xml b/tests/stub/error.xml
new file mode 100644
index 0000000..179bbf1
--- /dev/null
+++ b/tests/stub/error.xml
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<unitellerresult firstcode="1" secondcode="Authentication error" count="1">
+</unitellerresult>
\ No newline at end of file
diff --git a/tests/stub/results.xml b/tests/stub/results.xml
new file mode 100644
index 0000000..e0925ed
--- /dev/null
+++ b/tests/stub/results.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<unitellerresult firstcode="" secondcode="" count="1">
+    <orders>
+        <order>
+            <ordernumber>Value of ordernumber</ordernumber>
+            <response_code>Value of response_code</response_code>
+            <recommendation>Value of recommendation</recommendation>
+            <message>Value of message</message>
+            <comment>Value of comment</comment>
+            <date>10.03.2017 15:42:42</date>
+            <total>Value of total</total>
+            <currency>Value of currency</currency>
+            <cardtype>Value of cardtype</cardtype>
+            <emoneytype>Value of emoneytype</emoneytype>
+            <cardnumber>Value of cardnumber</cardnumber>
+            <eorderdata>foo=bar, baz=bue</eorderdata>
+            <lastname>Value of lastname</lastname>
+            <firstname>Value of firstname</firstname>
+            <middlename>Value of middlename</middlename>
+            <bookingcom_id>Value of bookingcom_id</bookingcom_id>
+            <bookingcom_pincode>Value of bookingcom_pincode</bookingcom_pincode>
+            <gds_payment_purpose_id>Value of gds_payment_purpose_id</gds_payment_purpose_id>
+            <idata>Value of idata</idata>
+            <need_confirm>1</need_confirm>
+            <loan_id>Value of loan_id</loan_id>
+            <card_idp>Value of card_idp</card_idp>
+            <parent_order_number>Value of parent_order_number</parent_order_number>
+            <address>Value of address</address>
+            <email>Value of email</email>
+            <status>paid</status>
+            <pt_code>Value of pt_code</pt_code>
+            <approvalcode>Value of approvalcode</approvalcode>
+            <cvc2>Value of cvc2</cvc2>
+            <cardholder>Value of cardholder</cardholder>
+            <ipaddress>Value of ipaddress</ipaddress>
+            <billnumber>Value of billnumber</billnumber>
+            <bankname>Value of bankname</bankname>
+            <status>Value of status</status>
+            <error_code>Value of error_code</error_code>
+            <error_comment>Value of error_comment</error_comment>
+            <packetdate>10.03.2017 15:42:42</packetdate>
+            <paymenttype>Value of paymenttype</paymenttype>
+            <phone>Value of phone</phone>
+        </order>
+    </orders>
+</unitellerresult>
\ No newline at end of file