code: def test_mask_edge_case_1xN_frame(self):
      # GH#4071
      df = DataFrame([[1, 2]])
      res = df.mask(DataFrame([[True, False]]))
      expec = DataFrame([[np.nan, 2]])
      tm.assert_frame_equal(res, expec)
  
file_path: pandas/pandas/tests/frame/indexing/test_mask.py
imports: import numpy
  from pandas import NA, DataFrame, Float64Dtype, Series, StringDtype, Timedelta, isna
  import pandas._testing
label_desc: Use image node_id 4 for calling the TestDataFrameMask obj's underlying member method code with example usage: obj.test_mask_edge_case_1xN_frame() without return types