add baseline to test

Author: melonora

tests/_images/Images_can_pass_normalize.png

@@ -3,6 +3,7 @@
 import numpy as np
 import scanpy as sc
 import spatialdata_plot  # noqa: F401
+from matplotlib import pyplot as plt
 from matplotlib.colors import Normalize
 from spatial_image import to_spatial_image
 from spatialdata import SpatialData
@@ -70,11 +71,15 @@ def test_plot_can_render_two_channels_str_from_multiscale_image(self, sdata_blob
         sdata_blobs_str.pl.render_images(element="blobs_multiscale_image", channel=["c1", "c2"]).pl.show()
 
     def test_plot_can_pass_vmin_vmax(self, sdata_blobs: SpatialData):
-        sdata_blobs.pl.render_images(element="blobs_image", channel=1, vmin=0, vmax=0.4).pl.show()
+        fig, axs = plt.subplots(ncols=2, figsize=(6, 3))
+        sdata_blobs.pl.render_images(element="blobs_image", channel=1).pl.show(ax=axs[0])
+        sdata_blobs.pl.render_images(element="blobs_image", channel=1, vmin=0, vmax=0.4).pl.show(ax=axs[1])
 
     def test_plot_can_pass_normalize(self, sdata_blobs: SpatialData):
+        fig, axs = plt.subplots(ncols=2, figsize=(6, 3))
         norm = Normalize(vmin=0, vmax=0.4, clip=True)
-        sdata_blobs.pl.render_images(element="blobs_image", channel=1, norm=norm).pl.show()
+        sdata_blobs.pl.render_images(element="blobs_image", channel=1).pl.show(ax=axs[0])
+        sdata_blobs.pl.render_images(element="blobs_image", channel=1, norm=norm).pl.show(ax=axs[1])
 
     def test_plot_can_pass_color_to_single_channel(self, sdata_blobs: SpatialData):
         sdata_blobs.pl.render_images(element="blobs_image", channel=1, palette="red").pl.show()