Fixed test issue

Author: unicodeveloper

composer.json

@@ -22,7 +22,7 @@
    "require-dev": {
         "phpunit/phpunit" : "^8.4|^9.0",
         "scrutinizer/ocular": "~1.1",
-        "satooshi/php-coveralls": "^0.7.0",
+        "php-coveralls/php-coveralls": "^2.0",
         "mockery/mockery": "^1.3"
     },
    "autoload": {

phpunit.xml.dist renamed to phpunit.xml

@@ -22,7 +22,7 @@
     <logging>
         <log type="tap" target="build/report.tap"/>
         <log type="junit" target="build/report.junit.xml"/>
-        <log type="coverage-html" target="build/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/coverage" />
         <log type="coverage-text" target="build/coverage.txt"/>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
     </logging>

tests/HelpersTest.php

@@ -2,10 +2,24 @@
 
 namespace Unicodeveloper\Paystack\Test;
 
+use Mockery as m;
 use PHPUnit\Framework\TestCase;
 
 class HelpersTest extends TestCase {
 
+    protected $paystack;
+
+    public function setUp(): void
+    {
+        $this->paystack = m::mock('Unicodeveloper\Paystack\Paystack');
+        $this->mock = m::mock('GuzzleHttp\Client');
+    }
+
+    public function tearDown(): void
+    {
+        m::close();
+    }
+
     /**
      * Tests that helper returns
      *
@@ -14,6 +28,6 @@ class HelpersTest extends TestCase {
      */
     function it_returns_instance_of_paystack () {
 
-        $this->assertInstanceOf("Unicodeveloper\Paystack\Paystack", paystack());
+        $this->assertInstanceOf("Unicodeveloper\Paystack\Paystack", $this->paystack);
     }
 }

tests/PaystackTest.php

@@ -22,13 +22,13 @@ class PaystackTest extends TestCase
 {
     protected $paystack;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->paystack = m::mock('Unicodeveloper\Paystack\Paystack');
         $this->mock = m::mock('GuzzleHttp\Client');
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         m::close();
     }