- base & view model for imread

- transforms bugfix
- implement (nan)var and (nan)std
- add tests

tests/test_open.py

@@ -1,12 +1,25 @@
+import pickle
 import pytest
 from pathlib import Path
+from multiprocessing import active_children
 from ndbioimage import Imread, ReaderNotFoundError
 
 
-@pytest.mark.parametrize("file", (Path(__file__).parent / 'files').iterdir())
+@pytest.mark.parametrize('file', (Path(__file__).parent / 'files').iterdir())
 def test_open(file):
     try:
         with Imread(file) as im:
-            print(im[dict(c=0, z=0, t=0)].mean())
+            mean = im[dict(c=0, z=0, t=0)].mean()
+            b = pickle.dumps(im)
+            jm = pickle.loads(b)
+            assert jm[dict(c=0, z=0, t=0)].mean() == mean
+            v = im.view()
+            assert v[dict(c=0, z=0, t=0)].mean() == mean
+            b = pickle.dumps(v)
+            w = pickle.loads(b)
+            assert w[dict(c=0, z=0, t=0)].mean() == mean
     except ReaderNotFoundError:
-        assert len(Imread.__subclasses__()), "No subclasses for Imread found."
+        assert len(Imread.__subclasses__()), 'No subclasses for Imread found.'
+
+    for child in active_children():
+        child.kill()

tests/test_ufuncs.py

@@ -0,0 +1,18 @@
+import pytest
+import numpy as np
+from ndbioimage import Imread
+from itertools import product
+
+
+r = np.random.randint(0, 255, (64, 64, 2, 3, 4))
+im = Imread(r)
+a = np.array(im)
+
+
+@pytest.mark.parametrize('fun_and_axis', product(
+    (np.sum, np.nansum, np.min, np.nanmin, np.max, np.nanmax, np.argmin, np.argmax,
+     np.mean, np.nanmean, np.var, np.nanvar, np.std, np.nanstd), (None, 0, 1, 2, 3, 4)))
+def test_ufuncs(fun_and_axis):
+    fun, axis = fun_and_axis
+    assert np.all(np.isclose(fun(im, axis), fun(a, axis))), \
+        f'function {fun.__name__} over axis {axis} does not give the correct result'