check if x is in electrodes

nwbwidgets/ecephys.py

@@ -82,7 +82,7 @@ def selection_fn(trace, points, selector):
 
 def show_electrodes(electrodes_table):
     in_dict = dict(table=render_dataframe)
-    if np.isnan(electrodes_table.x[0]):  # position is not defined
+    if not hasattr(electrodes_table, "x") or np.isnan(electrodes_table.x[0]):  # position is not defined
         in_dict.update(electrode_groups=ElectrodeGroupsWidget)
     else:
         subject = electrodes_table.get_ancestor("NWBFile").subject

requirements-testing.txt

@@ -0,0 +1,2 @@
+pytest
+pynwb>=2.3.0

test/test_ecephys.py

@@ -7,10 +7,16 @@
 from dateutil.tz import tzlocal
 from pynwb import NWBFile, TimeSeries
 from pynwb.ecephys import LFP, ElectricalSeries, SpikeEventSeries
+from pynwb.testing.mock.ecephys import mock_ElectrodeTable
 
 from nwbwidgets import nwb2widget
 from nwbwidgets.base import show_multi_container_interface
-from nwbwidgets.ecephys import show_ccf, show_spectrogram, show_spike_event_series
+from nwbwidgets.ecephys import (
+    show_ccf,
+    show_electrodes,
+    show_spectrogram,
+    show_spike_event_series,
+)
 from nwbwidgets.view import default_neurodata_vis_spec
 
 
@@ -103,6 +109,11 @@ def test_show_spectrogram():
     show_spectrogram(ts, channel=channel)
 
 
+def test_show_electrodes():
+    electrode_table = mock_ElectrodeTable()
+    show_electrodes(electrode_table)
+
+
 @pytest.mark.skip(reason="Test broke somewhere around PR #219, but cause is unclear.")
 def test_show_ccf():
     show_ccf()