[EDF] Add note regarding lazy loading and shorten tests

Author: sprenger

neo/io/edfio.py

@@ -1,5 +1,5 @@
 """
-IO for reading edf and edfplus files using pyedflib
+IO for reading edf and edf+ files using pyedflib
 
 PyEDFLib
 https://pyedflib.readthedocs.io
@@ -15,6 +15,10 @@
 
 
 class EDFIO(EDFRawIO, BaseFromRaw):
+    """
+    IO for reading edf and edf+ files.
+    Note that this IO does not yet implement true lazy loading.
+    """
     name = 'EDF IO'
     description = "IO for reading EDF and EDF+ files"
 

neo/test/iotest/test_edfio.py

@@ -31,21 +31,7 @@ def test_read_block(self):
         bl = self.io.read_block()
         self.assertTrue(bl.annotations)
 
-    def test_read_segment_lazy(self):
-        """
-        Test lazy loading of object structure and loading of data in a 2nd step
-        """
-        seg = self.io.read_segment(lazy=True)
-        for ana in seg.analogsignals:
-            assert isinstance(ana, AnalogSignalProxy)
-            ana = ana.load()
-            assert isinstance(ana, AnalogSignal)
-
-        seg = self.io.read_segment(lazy=False)
-        for anasig in seg.analogsignals:
-            assert isinstance(ana, AnalogSignal)
-            self.assertTrue(any(anasig.shape))
-
+        seg = bl.segments[0]
         assert seg.name == 'Seg #0 Block #0'
         for anasig in seg.analogsignals:
             assert anasig.name is not None