- remove all readers but bioformats

- open folder with sequence

tests/test_open.py

@@ -1,27 +1,21 @@
 import pickle
-from multiprocessing import active_children
 from pathlib import Path
 
 import pytest
 
-from ndbioimage import Imread, ReaderNotFoundError
+from ndbioimage import Imread
 
 
-@pytest.mark.parametrize('file', (Path(__file__).parent / 'files').iterdir())
+@pytest.mark.parametrize('file',
+                         [file for file in (Path(__file__).parent / 'files').iterdir() if not file.suffix == '.pzl'])
 def test_open(file):
-    try:
-        with Imread(file) as im:
-            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.'
-
-    for child in active_children():
-        child.kill()
+    with Imread(file) as im:
+        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