From 16f2e0dd0b83e2d4135a384d3fb19a9e2db5c32c Mon Sep 17 00:00:00 2001
From: LisovyiEvhenii <lisovyievhenii@gmail.com>
Date: Sat, 10 Nov 2018 11:44:19 +0200
Subject: [PATCH 1/2] Add availability to leave empty config for events.xml

---
 lib/internal/Magento/Framework/Event/etc/events.xsd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/internal/Magento/Framework/Event/etc/events.xsd b/lib/internal/Magento/Framework/Event/etc/events.xsd
index d656b7fdb6ed6..cac62af356760 100644
--- a/lib/internal/Magento/Framework/Event/etc/events.xsd
+++ b/lib/internal/Magento/Framework/Event/etc/events.xsd
@@ -9,7 +9,7 @@
     <xs:element name="config">
         <xs:complexType>
             <xs:sequence>
-                <xs:element name="event" type="eventDeclaration" minOccurs="1" maxOccurs="unbounded">
+                <xs:element name="event" type="eventDeclaration" minOccurs="0" maxOccurs="unbounded">
                     <xs:unique name="uniqueObserverName">
                         <xs:annotation>
                             <xs:documentation>

From 7ae271e7768c713e7ad83e8631e7308ac5b22193 Mon Sep 17 00:00:00 2001
From: LisovyiEvhenii <lisovyievhenii@gmail.com>
Date: Sun, 11 Nov 2018 12:17:24 +0200
Subject: [PATCH 2/2] Fix unit test of Framework/Event module

---
 .../Event/Test/Unit/Config/_files/invalidEventsXmlArray.php   | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/invalidEventsXmlArray.php b/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/invalidEventsXmlArray.php
index 33007b7295bca..e0dc7494cca19 100644
--- a/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/invalidEventsXmlArray.php
+++ b/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/invalidEventsXmlArray.php
@@ -4,10 +4,6 @@
  * See COPYING.txt for license details.
  */
 return [
-    'without_event_handle' => [
-        '<?xml version="1.0"?><config></config>',
-        ["Element 'config': Missing child element(s). Expected is ( event ).\nLine: 1\n"],
-    ],
     'event_without_required_name_attribute' => [
         '<?xml version="1.0"?><config><event name="some_name"></event></config>',
         ["Element 'event': Missing child element(s). Expected is ( observer ).\nLine: 1\n"],