From 04101c3f437da50e137d52f5fe2fa5e6fbfab65a Mon Sep 17 00:00:00 2001
From: Matthias Kuhn <matthias@opengis.ch>
Date: Sun, 5 Nov 2017 23:18:50 +0100
Subject: [PATCH] Add dummy canvas to test

---
 tests/src/python/test_qgsrelationeditwidget.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/src/python/test_qgsrelationeditwidget.py b/tests/src/python/test_qgsrelationeditwidget.py
index dd9e92deced..492fc445279 100644
--- a/tests/src/python/test_qgsrelationeditwidget.py
+++ b/tests/src/python/test_qgsrelationeditwidget.py
@@ -29,7 +29,8 @@ from qgis.core import (
 from qgis.gui import (
     QgsGui,
     QgsRelationWidgetWrapper,
-    QgsAttributeEditorContext
+    QgsAttributeEditorContext,
+    QgsMapCanvas
 )
 
 from qgis.PyQt.QtCore import QTimer
@@ -47,7 +48,8 @@ class TestQgsRelationEditWidget(unittest.TestCase):
         Setup the involved layers and relations for a n:m relation
         :return:
         """
-        QgsGui.editorWidgetRegistry().initEditors()
+        cls.mapCanvas = QgsMapCanvas()
+        QgsGui.editorWidgetRegistry().initEditors(cls.mapCanvas)
         cls.dbconn = 'service=\'qgis_test\''
         if 'QGIS_PGTEST_DB' in os.environ:
             cls.dbconn = os.environ['QGIS_PGTEST_DB']