test_metadata.py 文件源码

def test_no_columns(self):
        fp = pkg_resources.resource_filename(
            'qiime2.tests', 'data/metadata/no-columns.tsv')

        metadata = qiime2.Metadata.load(fp)
        obs_df = metadata.to_dataframe()

        exp_index = pd.Index(['a', 'b', 'id'], name='my-index', dtype=object)
        exp_df = pd.DataFrame({}, index=exp_index, dtype=object)

        self.assertFalse(obs_df.index.empty)
        self.assertTrue(obs_df.columns.empty)
        pdt.assert_frame_equal(
            obs_df, exp_df, check_dtype=True, check_index_type=True,
            check_column_type=True, check_frame_type=True, check_names=True,
            check_exact=True)