Allow invocation of protected

src/TestSuite/ToolsTestTrait.php

@@ -70,4 +70,28 @@ trait ToolsTestTrait {
 		debug($data, null, $showFrom);
 	}
 
+	/**
+	 * Call protected/private method of a class.
+	 *
+	 * So
+	 *   $this->invokeMethod($user, 'cryptPassword', array('passwordToCrypt'));
+	 * is equal to
+	 *   $user->cryptPassword('passwordToCrypt');
+	 * (assuming the method was directly publicly accessible
+	 *
+	 * @param object &$object Instantiated object that we will run method on.
+	 * @param string $methodName Method name to call.
+	 * @param array $parameters Array of parameters to pass into method.
+	 *
+	 * @return mixed Method return.
+	 */
+	protected function invokeMethod(&$object, $methodName, array $parameters = [])
+	{
+		$reflection = new \ReflectionClass(get_class($object));
+		$method = $reflection->getMethod($methodName);
+		$method->setAccessible(true);
+
+		return $method->invokeArgs($object, $parameters);
+	}
+
 }