Upgrade framework

vendor/hamcrest/hamcrest-php/hamcrest/Hamcrest/BaseMatcher.php

@@ -22,4 +22,9 @@ abstract class BaseMatcher implements Matcher
     {
         return StringDescription::toString($this);
     }
+
+    public function __invoke()
+    {
+        return call_user_func_array(array($this, 'matches'), func_get_args());
+    }
 }

vendor/hamcrest/hamcrest-php/hamcrest/Hamcrest/Type/IsNumeric.php

@@ -19,9 +19,29 @@ class IsNumeric extends IsTypeOf
 
     public function matches($item)
     {
+        if ($this->isHexadecimal($item)) {
+            return true;
+        }
+
         return is_numeric($item);
     }
 
+    /**
+     * Return if the string passed is a valid hexadecimal number.
+     * This check is necessary because PHP 7 doesn't recognize hexadecimal string as numeric anymore.
+     *
+     * @param mixed $item
+     * @return boolean
+     */
+    private function isHexadecimal($item)
+    {
+        if (is_string($item) && preg_match('/^0x(.*)$/', $item, $matches)) {
+            return ctype_xdigit($matches[1]);
+        }
+
+        return false;
+    }
+
     /**
      * Is the value a numeric?
      *

vendor/hamcrest/hamcrest-php/hamcrest/Hamcrest/Util.php

@@ -12,6 +12,10 @@ namespace Hamcrest;
  */
 class Util
 {
+    public static function registerGlobalFunctions()
+    {
+        require_once __DIR__.'/../Hamcrest.php';
+    }
 
     /**
      * Wraps the item with an IsEqual matcher if it isn't a matcher already.