From a9049f1d4d37df71aee9198653f90ab263f73bd7 Mon Sep 17 00:00:00 2001
From: Ales Erjavec <ales.erjavec@fri.uni-lj.si>
Date: Tue, 28 Jul 2020 10:01:15 +0200
Subject: [PATCH] Pop the 'parent' arg from ArrowItem opts parameter dict

If not, then an `KeyError: 'Invalid arrow style option "parent"'`
 is raised in setStyle.
---
 pyqtgraph/graphicsItems/ArrowItem.py            |  2 +-
 pyqtgraph/graphicsItems/tests/test_ArrowItem.py | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 pyqtgraph/graphicsItems/tests/test_ArrowItem.py

diff --git a/pyqtgraph/graphicsItems/ArrowItem.py b/pyqtgraph/graphicsItems/ArrowItem.py
index e0628d08..8dc5bba2 100644
--- a/pyqtgraph/graphicsItems/ArrowItem.py
+++ b/pyqtgraph/graphicsItems/ArrowItem.py
@@ -17,7 +17,7 @@ class ArrowItem(QtGui.QGraphicsPathItem):
         the setStyle() method.
         """
         self.opts = {}
-        QtGui.QGraphicsPathItem.__init__(self, opts.get('parent', None))
+        QtGui.QGraphicsPathItem.__init__(self, opts.pop('parent', None))
 
         if 'size' in opts:
             opts['headLen'] = opts['size']
diff --git a/pyqtgraph/graphicsItems/tests/test_ArrowItem.py b/pyqtgraph/graphicsItems/tests/test_ArrowItem.py
new file mode 100644
index 00000000..019aeeed
--- /dev/null
+++ b/pyqtgraph/graphicsItems/tests/test_ArrowItem.py
@@ -0,0 +1,10 @@
+import pyqtgraph as pg
+
+app = pg.mkQApp()
+
+
+def test_ArrowItem():
+    parent = pg.GraphicsObject()
+    a = pg.ArrowItem(parent=parent, pos=(10, 10))
+    assert a.parentItem() is parent
+    assert a.pos() == pg.Point(10, 10)