Support Codeception 2.6 in 7.1 branch

Author: Naktibalda

.travis.yml

@@ -1,7 +1,7 @@
 language: php
 
 env:
-  CODECEPTION_VERSION: '2.5.x-dev'
+  CODECEPTION_VERSION: '2.6.x-dev'
 
 php:
   - 7.1

src/TestCase.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Codeception\PHPUnit;
+
+
+abstract class TestCase extends \PHPUnit\Framework\TestCase
+{
+
+    protected function setUp()
+    {
+        if (method_exists($this, '_setUp')) {
+            $this->_setUp();
+        }
+    }
+
+    protected function tearDown()
+    {
+        if (method_exists($this, '_tearDown')) {
+            $this->_tearDown();
+        }
+    }
+
+    public static function setUpBeforeClass()
+    {
+        if (method_exists(get_called_class(), '_setUpBeforeClass')) {
+            static::_setUpBeforeClass();
+        }
+    }
+
+    public static function tearDownAfterClass()
+    {
+        if (method_exists(get_called_class(), '_tearDownAfterClass')) {
+            static::_tearDownAfterClass();
+        }
+    }
+}