ENH: Explicitly test the itkConfig.LazyLoad=False option

The default lazy loading is well tested, but
the non-lazy load path is never routinely tested.

Wrapping/Generators/Python/Tests/CMakeLists.txt

@@ -18,6 +18,7 @@ itk_python_add_test(NAME PythonTypeTest COMMAND PythonTypeTest.py)
 itk_python_add_test(NAME PythonComplex COMMAND complex.py)
 itk_python_add_test(NAME PythonHelperFunctions COMMAND helpers.py)
 itk_python_add_test(NAME PythonLazyModule COMMAND lazy.py)
+itk_python_add_test(NAME PythonNoLazyModule COMMAND nolazy.py)
 
 # some tests will fail if dim=2 and unsigned short are not wrapped
 INTERSECTION(WRAP_2 2 "${ITK_WRAP_IMAGE_DIMS}")

Wrapping/Generators/Python/Tests/extras.py

@@ -18,6 +18,10 @@
 
 # also test the import callback feature
 
+import itk
+import sys
+import os
+
 def custom_callback(name, progress):
     if progress == 0:
         print("Loading %s..." % name, file=sys.stderr)
@@ -26,9 +30,6 @@ def custom_callback(name, progress):
 import itkConfig
 itkConfig.ImportCallback = custom_callback
 
-import itk
-import sys
-import os
 
 # test setting the number of threads
 itk.set_nthreads(4)

Wrapping/Generators/Python/Tests/nolazy.py

@@ -0,0 +1,33 @@
+#==========================================================================
+#
+#   Copyright NumFOCUS
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#          http://www.apache.org/licenses/LICENSE-2.0.txt
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+#==========================================================================*/
+import itkConfig
+itkConfig.LazyLoading = False
+import itk
+
+# Test PEP 366 compliance of LazyITKModule
+assert(itk.__package__ == 'itk')
+from itk import ITKCommon
+assert(ITKCommon.__package__ == 'itk')
+
+# Test pickling used bash Dask
+try:
+    import cloudpickle
+    itkpickled = cloudpickle.dumps(itk)
+    cloudpickle.loads(itkpickled)
+except ImportError:
+    pass