Adds more tests to reach above the 80% test coverage.

Author: kiettran

README.md

@@ -89,7 +89,6 @@ $data = [
 
 $response = $gateway->authorize($data)->send()->getData();
 ```
-This will return the order details as well as the checkout HTML snippet to render on your site.
 
 [API documentation](http://docs2.icepay.com/calling-our-webservice/transaction-functions/)
 
@@ -108,7 +107,7 @@ $success = $gateway->fetchTransaction([
 [API documentation](https://icepay2.docs.apiary.io/#reference/0/transaction)
 
 ### Refund
-*Do note: refunds have not been tested in production*
+*Do note: refunds implementation has not been tested.*
 
 ```php
 $success = $gateway->refund([

tests/Message/RefundResponseTest.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Omnipay\IcepayPayments\Message;
+
+use Omnipay\IcepayPayments\AbstractTestCase;
+
+/**
+ * Class RefundResponseTest.
+ */
+class RefundResponseTest extends AbstractTestCase
+{
+    /**
+     * @var TransactionStatusRequest
+     */
+    private $request;
+
+    /**
+     * Creates a new TransactionStatusRequest instance.
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->request = new RefundRequest($this->httpClient, $this->httpRequest);
+    }
+
+    /**
+     * Tests if TransactionStatusResponse::isSuccessful will return true with the given json response.
+     */
+    public function testResponseReturnsSuccessful(): void
+    {
+        $responseJsonBody = file_get_contents(__DIR__.'/../Mocks/RefundSuccess.json');
+        $response = new RefundResponse($this->request, json_decode($responseJsonBody, true));
+
+        $expectedResponseBody = [
+            'RefundId' => '7c9cb2f4-83ce-4b10-8d5c-de230181224f',
+            'RefundStatusCode' => AbstractResponse::RESPONSE_STATUS_COMPLETED,
+            'RefundStatusDetails' => '',
+            'AcquirerRefundId' => '',
+        ];
+
+        $this->assertTrue($response->isSuccessful());
+        $this->assertSame($expectedResponseBody, $response->getData());
+    }
+
+    /**
+     * Tests if TransactionStatusResponse::isSuccessful will return false from the json response.
+     */
+    public function testIfResponseReturnNotSuccessful(): void
+    {
+        $responseJsonBody = file_get_contents(__DIR__.'/../Mocks/RefundFail.json');
+        $response = new RefundResponse($this->request, json_decode($responseJsonBody, true));
+
+        $this->assertFalse($response->isSuccessful());
+    }
+}

tests/Message/TransactionStatusResponseTest.php

@@ -22,6 +22,7 @@ protected function setUp(): void
         parent::setUp();
 
         $this->request = new TransactionStatusRequest($this->httpClient, $this->httpRequest);
+        $this->request->setTransactionReference('7c9cb2f4-83ce-4b10-8d5c-de230181224f');
     }
 
     /**
@@ -42,6 +43,7 @@ public function testResponseReturnsSuccessful(): void
 
         $this->assertTrue($response->isSuccessful());
         $this->assertSame($expectedResponseBody, $response->getData());
+        $this->assertSame($expectedResponseBody['transactionId'], $response->getTransactionReference());
     }
 
     /**
@@ -50,7 +52,7 @@ public function testResponseReturnsSuccessful(): void
     public function testIfResponseReturnNotSuccessful(): void
     {
         $responseJsonBody = file_get_contents(__DIR__.'/../Mocks/TransactionStatusFail.json');
-        $response = new CreateTransactionResponse($this->request, json_decode($responseJsonBody, true));
+        $response = new TransactionStatusResponse($this->request, json_decode($responseJsonBody, true));
 
         $this->assertFalse($response->isSuccessful());
     }

tests/Mocks/RefundFail.json

@@ -0,0 +1,3 @@
+{
+    "RefundStatusCode": ""
+}

tests/Mocks/RefundSuccess.json

@@ -0,0 +1,6 @@
+{
+    "RefundId": "7c9cb2f4-83ce-4b10-8d5c-de230181224f",
+    "RefundStatusCode": "COMPLETED",
+    "RefundStatusDetails": "",
+    "AcquirerRefundId": ""
+}