Check if environment has skimage before running tests (#2102)

* Add has_skimage check
* Add utils
---------
Signed-off-by: Hannah Robarts <[email protected]>

Author: hrobarts

Wrappers/Python/test/test_reconstructors.py

@@ -20,9 +20,8 @@
 from cil.framework import AcquisitionGeometry
 from cil.utilities.dataexample import SIMULATED_PARALLEL_BEAM_DATA, SIMULATED_CONE_BEAM_DATA, SIMULATED_SPHERE_VOLUME
 from scipy.fft  import fft, ifft
-from skimage.transform.radon_transform import _get_fourier_filter as skimage_get_fourier_filter
 import numpy as np
-from utils import has_tigre, has_ipp, has_astra, has_nvidia, has_matplotlib, initialise_tests
+from utils import has_tigre, has_ipp, has_astra, has_nvidia, has_matplotlib, has_skimage, initialise_tests
 
 from cil.recon.Reconstructor import Reconstructor # checks on baseclass
 from cil.recon.FBP import GenericFilteredBackProjection # checks on baseclass
@@ -47,6 +46,8 @@
 if has_matplotlib:
     import matplotlib.testing.compare as compare
 
+if has_skimage:
+    from skimage.transform.radon_transform import _get_fourier_filter as skimage_get_fourier_filter
 
 class Test_Reconstructor(unittest.TestCase):
 
@@ -245,7 +246,7 @@ def test_set_filter(self):
             reconstructor.set_filter(filter[1:-1])
 
 
-    @unittest.skipUnless(has_tigre and has_ipp, "TIGRE or IPP not installed")
+    @unittest.skipUnless(has_tigre and has_ipp and has_skimage, "TIGRE, IPP or SKIMAGE not installed")
     def test_get_filter_array(self):
 
         reconstructor = GenericFilteredBackProjection(self.ad3D)

Wrappers/Python/test/utils.py

@@ -134,6 +134,14 @@ def initialise_tests():
     has_matplotlib = True
 system_state['has_matplotlib'] = has_matplotlib
 
+#has_skimage
+module_info = importlib.util.find_spec("skimage")
+if module_info is None:
+    has_skimage = False
+else:
+    has_skimage = True
+system_state['has_skimage']= has_skimage
+
 #has_zenodo_get
 module_info = importlib.util.find_spec("zenodo_get")
 if module_info is None: