diff --git a/tests/Message/CompletePurchaseResponseTest.php b/tests/Message/CompletePurchaseResponseTest.php
index 096b0bb..75b0f8b 100644
--- a/tests/Message/CompletePurchaseResponseTest.php
+++ b/tests/Message/CompletePurchaseResponseTest.php
@@ -19,51 +19,48 @@ public function setUp()
         ));
     }
 
-    public function testException()
+    public function testSignHashException()
     {
-        try {
-            new CompletePurchaseResponse($this->request, array(
-                'LMI_MODE' => '1',
-                'LMI_PAYMENT_AMOUNT' => '14.65',
-                'LMI_PAYEE_PURSE' => 'Z123428476799',
-                'LMI_PAYMENT_NO' => '1444212666',
-                'LMI_PAYER_WM' => '404521188333',
-                'LMI_PAYER_PURSE' => 'Z366393600555',
-                'LMI_PAYER_COUNTRYID' => 'AZ',
-                'LMI_PAYER_IP' => '127.0.0.1',
-                'LMI_SYS_INVS_NO' => '897',
-                'LMI_SYS_TRANS_NO' => '892',
-                'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
-                'LMI_HASH' => '0B12E75431284D6FCC05D8AF02B90AC28A0788FB95C9FF6B655344022F0746E1',
-                'LMI_PAYMENT_DESC' => 'Test',
-                'LMI_LANG' => 'en-US',
-                'LMI_DBLCHK' => 'SMS'
-            ));
-        } catch (\Exception $e) {
-            $this->assertEquals('Omnipay\Common\Exception\InvalidResponseException', get_class($e));
-        }
+        $this->setExpectedException('Omnipay\Common\Exception\InvalidResponseException', 'Invalid hash');
+        new CompletePurchaseResponse($this->request, array(
+            'LMI_MODE' => '1',
+            'LMI_PAYMENT_AMOUNT' => '14.65',
+            'LMI_PAYEE_PURSE' => 'Z123428476799',
+            'LMI_PAYMENT_NO' => '1444212666',
+            'LMI_PAYER_WM' => '404521188333',
+            'LMI_PAYER_PURSE' => 'Z366393600555',
+            'LMI_PAYER_COUNTRYID' => 'AZ',
+            'LMI_PAYER_IP' => '127.0.0.1',
+            'LMI_SYS_INVS_NO' => '897',
+            'LMI_SYS_TRANS_NO' => '892',
+            'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
+            'LMI_HASH' => '0B12E75431284D6FCC05D8AF02B90AC28A0788FB95C9FF6B655344022F0746E1',
+            'LMI_PAYMENT_DESC' => 'Test',
+            'LMI_LANG' => 'en-US',
+            'LMI_DBLCHK' => 'SMS'
+        ));
+    }
 
-        try {
-            new CompletePurchaseResponse($this->request, array(
-                'LMI_MODE' => '0',
-                'LMI_PAYMENT_AMOUNT' => '14.65',
-                'LMI_PAYEE_PURSE' => 'Z123428476799',
-                'LMI_PAYMENT_NO' => '1444212666',
-                'LMI_PAYER_WM' => '404521188333',
-                'LMI_PAYER_PURSE' => 'Z366393600555',
-                'LMI_PAYER_COUNTRYID' => 'AZ',
-                'LMI_PAYER_IP' => '127.0.0.1',
-                'LMI_SYS_INVS_NO' => '897',
-                'LMI_SYS_TRANS_NO' => '892',
-                'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
-                'LMI_HASH' => '4F7D9FD1177DFDAE182F0E470296080DC47A843A32826147555F5C8959E7F6DD',
-                'LMI_PAYMENT_DESC' => 'Test',
-                'LMI_LANG' => 'en-US',
-                'LMI_DBLCHK' => 'SMS'
-            ));
-        } catch (\Exception $e) {
-            $this->assertEquals('Omnipay\Common\Exception\InvalidResponseException', get_class($e));
-        }
+    public function testInvalidTestModeException()
+    {
+        $this->setExpectedException('Omnipay\Common\Exception\InvalidResponseException', 'Invalid test mode');
+        new CompletePurchaseResponse($this->request, array(
+            'LMI_MODE' => '0',
+            'LMI_PAYMENT_AMOUNT' => '14.65',
+            'LMI_PAYEE_PURSE' => 'Z123428476799',
+            'LMI_PAYMENT_NO' => '1444212666',
+            'LMI_PAYER_WM' => '404521188333',
+            'LMI_PAYER_PURSE' => 'Z366393600555',
+            'LMI_PAYER_COUNTRYID' => 'AZ',
+            'LMI_PAYER_IP' => '127.0.0.1',
+            'LMI_SYS_INVS_NO' => '897',
+            'LMI_SYS_TRANS_NO' => '892',
+            'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
+            'LMI_HASH' => '4F7D9FD1177DFDAE182F0E470296080DC47A843A32826147555F5C8959E7F6DD',
+            'LMI_PAYMENT_DESC' => 'Test',
+            'LMI_LANG' => 'en-US',
+            'LMI_DBLCHK' => 'SMS'
+        ));
     }
 
     public function testSuccess()
@@ -164,57 +161,47 @@ public function testMd5Hash()
         $this->assertSame('1D3FFAFA982B134479C4AD1AE2CABB5C', $response->getHash());
     }
 
-    public function testSignHash()
+    public function testInvalidHashTypeException()
     {
-        try {
-
-            new CompletePurchaseResponse($this->request, array(
-                'LMI_MODE' => '1',
-                'LMI_PAYMENT_AMOUNT' => '14.65',
-                'LMI_PAYEE_PURSE' => 'Z123428476799',
-                'LMI_PAYMENT_NO' => '1444212666',
-                'LMI_PAYER_WM' => '404521188333',
-                'LMI_PAYER_PURSE' => 'Z366393600555',
-                'LMI_PAYER_COUNTRYID' => 'AZ',
-                'LMI_PAYER_IP' => '127.0.0.1',
-                'LMI_SYS_INVS_NO' => '897',
-                'LMI_SYS_TRANS_NO' => '892',
-                'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
-                'LMI_HASH' => '2E2A8871CBB577DE4AB3E47EBFA100EB8AD9C7AF6FB5580169B8273409863941BDA16647D2D2619D8FFF946D319FE35D758844214B02F46CBA7AE35AFE3F86940069',
-                'LMI_PAYMENT_DESC' => 'Test',
-                'LMI_LANG' => 'en-US',
-                'LMI_DBLCHK' => 'SMS'
-            ));
-
-        } catch (\Exception $e) {
-            $this->assertEquals('Omnipay\Common\Exception\InvalidResponseException', get_class($e));
-        }
+        $this->setExpectedException('Omnipay\Common\Exception\InvalidResponseException', 'Control sign forming method "SIGN" is not supported');
+        new CompletePurchaseResponse($this->request, array(
+            'LMI_MODE' => '1',
+            'LMI_PAYMENT_AMOUNT' => '14.65',
+            'LMI_PAYEE_PURSE' => 'Z123428476799',
+            'LMI_PAYMENT_NO' => '1444212666',
+            'LMI_PAYER_WM' => '404521188333',
+            'LMI_PAYER_PURSE' => 'Z366393600555',
+            'LMI_PAYER_COUNTRYID' => 'AZ',
+            'LMI_PAYER_IP' => '127.0.0.1',
+            'LMI_SYS_INVS_NO' => '897',
+            'LMI_SYS_TRANS_NO' => '892',
+            'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
+            'LMI_HASH' => '2E2A8871CBB577DE4AB3E47EBFA100EB8AD9C7AF6FB5580169B8273409863941BDA16647D2D2619D8FFF946D319FE35D758844214B02F46CBA7AE35AFE3F86940069',
+            'LMI_PAYMENT_DESC' => 'Test',
+            'LMI_LANG' => 'en-US',
+            'LMI_DBLCHK' => 'SMS'
+        ));
     }
 
-    public function testInvalidHash()
+    public function testInvalidSignatureTypeException()
     {
-        try {
-
-            new CompletePurchaseResponse($this->request, array(
-                'LMI_MODE' => '1',
-                'LMI_PAYMENT_AMOUNT' => '14.65',
-                'LMI_PAYEE_PURSE' => 'Z123428476799',
-                'LMI_PAYMENT_NO' => '1444212666',
-                'LMI_PAYER_WM' => '404521188333',
-                'LMI_PAYER_PURSE' => 'Z366393600555',
-                'LMI_PAYER_COUNTRYID' => 'AZ',
-                'LMI_PAYER_IP' => '127.0.0.1',
-                'LMI_SYS_INVS_NO' => '897',
-                'LMI_SYS_TRANS_NO' => '892',
-                'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
-                'LMI_HASH' => 'ABD',
-                'LMI_PAYMENT_DESC' => 'Test',
-                'LMI_LANG' => 'en-US',
-                'LMI_DBLCHK' => 'SMS'
-            ));
-
-        } catch (\Exception $e) {
-            $this->assertEquals('Omnipay\Common\Exception\InvalidResponseException', get_class($e));
-        }
+        $this->setExpectedException('Omnipay\Common\Exception\InvalidResponseException', 'Invalid signature type');
+        new CompletePurchaseResponse($this->request, array(
+            'LMI_MODE' => '1',
+            'LMI_PAYMENT_AMOUNT' => '14.65',
+            'LMI_PAYEE_PURSE' => 'Z123428476799',
+            'LMI_PAYMENT_NO' => '1444212666',
+            'LMI_PAYER_WM' => '404521188333',
+            'LMI_PAYER_PURSE' => 'Z366393600555',
+            'LMI_PAYER_COUNTRYID' => 'AZ',
+            'LMI_PAYER_IP' => '127.0.0.1',
+            'LMI_SYS_INVS_NO' => '897',
+            'LMI_SYS_TRANS_NO' => '892',
+            'LMI_SYS_TRANS_DATE' => '20151007 13:07:36',
+            'LMI_HASH' => 'ABD',
+            'LMI_PAYMENT_DESC' => 'Test',
+            'LMI_LANG' => 'en-US',
+            'LMI_DBLCHK' => 'SMS'
+        ));
     }
 }