test_XXX_nwb_data.py/test_nwb2_sink.py: Ignore DtypeConversionwarning

This ignores the following and similiar warnings:

tests/dataset/test_mies_nwb_data.py: 2 warnings
  /home/thomas/.venvs/ipfx-3.9/lib/python3.9/site-packages/hdmf/build/objectmapper.py:267: DtypeConversionWarning: Spec 'CurrentClampSeries/sweep_number': Value with data type int64 is being converted to data type uint64 (min specification: uint32).
    warnings.warn(full_warning_msg, DtypeConversionWarning)

tests/attach_metadata/test_nwb2_sink.py: 10 warnings
tests/dataset/test_ephys_nwb_data.py: 6 warnings
tests/dataset/test_hbg_nwb_data.py: 3 warnings
tests/dataset/test_mies_nwb_data.py: 2 warnings
  /home/thomas/.venvs/ipfx-3.9/lib/python3.9/site-packages/hdmf/build/objectmapper.py:267: DtypeConversionWarning: Spec 'SweepTable/sweep_number': Value with data type int64 is being converted to data type uint64 (min specification: uint32).
    warnings.warn(full_warning_msg, DtypeConversionWarning)

tests/dataset/test_ephys_nwb_data.py: 6 warnings
tests/dataset/test_hbg_nwb_data.py: 3 warnings
tests/dataset/test_mies_nwb_data.py: 2 warnings
  /home/thomas/.venvs/ipfx-3.9/lib/python3.9/site-packages/hdmf/build/objectmapper.py:267: DtypeConversionWarning: Spec 'CurrentClampStimulusSeries/sweep_number': Value with data type int64 is being converted to data type uint64 (min specification: uint32).
    warnings.warn(full_warning_msg, DtypeConversionWarning)

Both int64 and uint64 are big enough for our number of sweeps. In addition
this test is using existing files so even fixing/upgrading IPNWB would not
solve the issue.

Author: t-b

tests/attach_metadata/test_nwb2_sink.py

@@ -79,6 +79,7 @@ def test_get_subject(nwbfile, set_none):
     assert nwbfile.subject.subject_id == "foo"
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_serialize(tmpdir_factory, nwbfile):
     out_path = os.path.join(
         str(tmpdir_factory.mktemp("test_serialize")),
@@ -102,6 +103,7 @@ def test_serialize(tmpdir_factory, nwbfile):
         assert obt.identifier == "test session"
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_roundtrip(tmpdir_factory, nwbfile):
     tmpdir = str(tmpdir_factory.mktemp("test_serialize"))
     first_path = os.path.join(tmpdir, "first.nwb")
@@ -136,6 +138,7 @@ def test_roundtrip(tmpdir_factory, nwbfile):
         "Mus musculus"
     ],
 ])
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_register(
         tmpdir_factory, nwbfile, name, value, sweep_id, getter, expected
 ):

tests/dataset/test_ephys_nwb_data.py

@@ -103,14 +103,17 @@ def nwb_data(tmp_nwb_path):
     return EphysNWBData(nwb_file=tmp_nwb_path, ontology=ontology)
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_stimulus_unit(nwb_data):
     assert nwb_data.get_stimulus_unit(sweep_number=4) == "Amps"
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_stimulus_code(nwb_data):
     assert nwb_data.get_stimulus_code(sweep_number=4) == "STIMULUS_CODE"
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_sweep_data(nwb_data):
 
     expected = {
@@ -125,6 +128,7 @@ def test_get_sweep_data(nwb_data):
     assert list(diff(expected, obtained, tolerance=0.001)) == []
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_sweep_attrs(nwb_data):
 
     expected = {
@@ -141,12 +145,14 @@ def test_get_sweep_attrs(nwb_data):
     print(expected)
     assert expected == obtained
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_clamp_mode(nwb_data):
 
     attrs = nwb_data.get_sweep_attrs(4);
 
     assert attrs['clamp_mode'] == "CurrentClamp"
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_full_recording_date(nwb_data):
     assert nwb_data.get_full_recording_date() == nwb_data.nwb.session_start_time
 

tests/dataset/test_hbg_nwb_data.py

@@ -27,10 +27,12 @@ def hbg_nwb_data(tmp_nwb_path):
     return HBGNWBData(nwb_file=tmp_nwb_path, ontology=ontology)
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_create_hbg(hbg_nwb_data):
     assert isinstance(hbg_nwb_data,HBGNWBData)
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_sweep_metadata(hbg_nwb_data):
 
     expected = {
@@ -48,6 +50,8 @@ def test_get_sweep_metadata(hbg_nwb_data):
     obtained = hbg_nwb_data.get_sweep_metadata(sweep_number=4)
     assert expected == obtained
 
+
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def  test_get_stimulus_code_ext(hbg_nwb_data):
 
     expected = 'STIMULUS_CODE'

tests/dataset/test_mies_nwb_data.py

@@ -42,10 +42,12 @@ def get_value(self, key, sweep_num, default):
                        ontology=ontology)
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_create_mies(mies_nwb_data):
     assert isinstance(mies_nwb_data, MIESNWBData)
 
 
+@pytest.mark.filterwarnings("ignore:.*Value with data type int64 is being converted to data type uint64.*")
 def test_get_sweep_metadata(mies_nwb_data):
 
     expected = {