fix unit tests to avoid comparing indices of sumstatjosttab

jass/test/test_worktable.py

@@ -22,9 +22,9 @@ class TestWorkTable(object):
         cls.expected_hdf_path = cls.get_file_path_fn('worktable.hdf5')
         create_worktable_file(cls.phenotypes_sel, init_file_path, cls.result_hdf_path, cls.remove_nan)
         cls.expected_sumstatjosttab = read_hdf(cls.expected_hdf_path, 'SumStatJostTab')
-        cls.expected_sumstatjosttab.reset_index(drop=True)
+        cls.expected_sumstatjosttab.reset_index(drop=True, inplace=True)
         cls.result_sumstatjosttab = read_hdf(cls.result_hdf_path, 'SumStatJostTab')
-        cls.result_sumstatjosttab.reset_index(drop=True)
+        cls.result_sumstatjosttab.reset_index(drop=True, inplace=True)
         cls.expected_regionsubtable = read_hdf(cls.expected_hdf_path, 'RegionSubTable')
         cls.result_regionsubtable = read_hdf(cls.result_hdf_path, 'RegionSubTable')
         cls.expected_summarytable = read_hdf(cls.expected_hdf_path, 'summaryTable')