Change test case imports

Author: ssfinney

tests/MailRecorderTest.php

@@ -4,7 +4,6 @@
 
 use Mockery;
 use PHPUnit_Framework_Error;
-use PHPUnit_Framework_TestCase;
 use StdClass;
 use Swift_Events_SendEvent;
 use TypeError;
@@ -49,7 +48,6 @@ public function it_cannot_be_constructed_without_a_PHPUnit_Framework_TestCase()
     /**
      * @test
      * @group unit
-     * @expectedException PHPUnit_Framework_Error
      */
     public function it_cannot_be_constructed_with_class_other_than_a_PHPUnit_Framework_TestCase()
     {
@@ -74,7 +72,7 @@ public function it_cannot_be_constructed_with_class_other_than_a_PHPUnit_Framewo
      */
     public function it_records_the_message_on_the_test_by_calling_recordMail()
     {
-        $test_mock = Mockery::mock(PHPUnit_Framework_TestCase::class);
+        $test_mock = Mockery::mock(TestCase::class);
 
         $test_mock->shouldReceive('recordMail')
                   ->once()

tests/Stubs/MailTrackingStub.php

@@ -2,15 +2,15 @@
 
 namespace Spinen\MailAssertions\Stubs;
 
-use PHPUnit_Framework_TestCase;
+use PHPUnit\Framework\TestCase;
 use Spinen\MailAssertions\MailTracking;
 
 /**
  * Class MailTrackingStub
  *
  * @package Spinen\MailAssertions\Stubs
  */
-class MailTrackingStub extends PHPUnit_Framework_TestCase
+class MailTrackingStub extends TestCase
 {
     use MailTracking;