def test_drop_obs_column():
    adata = ad.AnnData(np.array(X_list), obs=obs_dict, dtype="int32")

    subset = adata[:2]
    assert subset.is_view
    # returns a copy of obs
    assert subset.obs.drop(columns=["oanno1"]).columns.tolist() == ["oanno2", "oanno3"]
    assert subset.is_view
    # would modify obs, so it should actualize subset and not modify adata
    subset.obs.drop(columns=["oanno1"], inplace=True)
    assert not subset.is_view
    assert subset.obs.columns.tolist() == ["oanno2", "oanno3"]

    assert adata.obs.columns.tolist() == ["oanno1", "oanno2", "oanno3"]
def test_initial_object_with_valid_arguments_has_correct_properties(self):
        community_contribution_stats = (
            suggestion_registry.CommunityContributionStats(
                self.translation_reviewer_counts_by_lang_code,
                self.translation_suggestion_counts_by_lang_code,
                self.question_reviewer_count,
                self.question_suggestion_count
            )
        )
        community_contribution_stats.validate()

        self.assertEqual(
            (
                community_contribution_stats
                .translation_reviewer_counts_by_lang_code
            ),
            self.translation_reviewer_counts_by_lang_code)
        self.assertEqual(
            (
                community_contribution_stats
                .translation_suggestion_counts_by_lang_code
            ),
            self.translation_suggestion_counts_by_lang_code
        )
        self.assertEqual(
            community_contribution_stats.question_reviewer_count,
            self.question_reviewer_count
        )
        self.assertEqual(
            community_contribution_stats.question_suggestion_count,
            self.question_suggestion_count
        )