Compatibility with phpunit 5.1

Author: dxops

.travis.yml

@@ -8,15 +8,23 @@ php:
   - 7.1
 
 env:
-  - PHPUNIT=4.8
-  - PHPUNIT=5.0
-  - PHPUNIT=5.1
-  - PHPUNIT=5.2
-  - PHPUNIT=5.3
-  - PHPUNIT=5.4
-  - PHPUNIT=5.5
-  - PHPUNIT=5.6
-  - PHPUNIT=5.7
+  - PHPUNIT=4.8.*
+  - PHPUNIT=5.0.*
+  - PHPUNIT=5.1.*
+  - PHPUNIT=5.2.*
+  - PHPUNIT=5.3.*
+  - PHPUNIT=5.4.*
+  - PHPUNIT=5.5.*
+  - PHPUNIT=5.6.*
+  - PHPUNIT=5.6.x-dev
+  - PHPUNIT=5.7.x-dev
+  - PHPUNIT=6.0.x-dev
+
+matrix:
+  allow_failure:
+    - env: PHPUNIT=5.6.x-dev
+    - env: PHPUNIT=5.7.x-dev
+    - env: PHPUNIT=6.0.x-dev
 
 cache:
   directories:

src/JohnKary/PHPUnit/Listener/SpeedTrapListener.php

@@ -61,6 +61,21 @@ public function addError(\PHPUnit_Framework_Test $test, \Exception $e, $time)
     {
     }
 
+    /**
+     * A warning occurred.
+     *
+     * @param \PHPUnit_Framework_Test    $test
+     * @param \PHPUnit_Framework_Warning $e
+     * @param float                     $time
+     *
+     * @since Method available since Release 6.0.0
+     * @todo  Uncomment in time for PHPUnit 6.0.0
+     * @see   https://github.com/sebastianbergmann/phpunit/pull/1840#issuecomment-162535997
+     */
+    public function addWarning(\PHPUnit_Framework_Test $test, \PHPUnit_Framework_Warning $e, $time)
+    {
+    }
+
     /**
      * A failure occurred.
      *