From 35a45b1773986513cbe1522a0de0e62104d5f24f Mon Sep 17 00:00:00 2001
From: Andrew <15331990+ahuang11@users.noreply.github.com>
Date: Tue, 19 Sep 2023 08:47:48 -0700
Subject: [PATCH] Add version check for test

---
 hvplot/tests/testoperations.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hvplot/tests/testoperations.py b/hvplot/tests/testoperations.py
index f3f303e04..1680c64a1 100644
--- a/hvplot/tests/testoperations.py
+++ b/hvplot/tests/testoperations.py
@@ -196,6 +196,8 @@ def test_datashade_rescale_discrete_levels_default_True(self):
         assert actual is expected
 
     def test_rasterize_by(self):
+        if Version(hv.__version__) < Version('1.18.0a1'):
+            raise SkipTest('hv.ImageStack introduced after 1.18.0a1')
         expected = 'category'
         plot = self.df.hvplot(x='x', y='y', by=expected, rasterize=True, dynamic=False)
         assert isinstance(plot, ImageStack)