def test_view_mixin_copies_data(adata, array_type: type, attr):
    N = 100
    adata = ad.AnnData(
        obs=pd.DataFrame(index=np.arange(N)), var=pd.DataFrame(index=np.arange(N))
    )

    X = array_type(sparse.eye(N, N).multiply(np.arange(1, N + 1)))
    if attr == "X":
        adata.X = X
    else:
        getattr(adata, attr)["arr"] = X

    view = adata[:50]

    if attr == "X":
        arr_view = view.X
    else:
        arr_view = getattr(view, attr)["arr"]

    arr_view_copy = arr_view.copy()

    if sparse.issparse(X):
        assert not np.shares_memory(arr_view.indices, arr_view_copy.indices)
        assert not np.shares_memory(arr_view.indptr, arr_view_copy.indptr)
        assert not np.shares_memory(arr_view.data, arr_view_copy.data)

        arr_view_copy.data[0] = -5
        assert not np.array_equal(arr_view_copy.data, arr_view.data)
    else:
        assert not np.shares_memory(arr_view, arr_view_copy)

        arr_view_copy[0, 0] = -5
        assert not np.array_equal(arr_view_copy, arr_view)
def _on_Connection(self, server, user, password,
                       auto_bind=None, client_strategy=None,
                       authentication=None, check_names=None,
                       auto_referrals=None, receive_timeout=None):
        """
        We need to create a Connection object with
        methods:
            add()
            modify()
            search()
            unbind()
        and object
            response
        """
        # Raise an exception, if we are told to do so
        if self.exception:
            raise Exception("LDAP request failed")
        # check the password
        correct_password = False
        # Anonymous bind
        # Reload the directory just in case a change has been made to
        # user credentials
        self.directory = self._load_data(DIRECTORY)
        if authentication == ldap3.ANONYMOUS and user == "":
            correct_password = True
        for entry in self.directory:
            if to_unicode(entry.get("dn")) == user:
                pw = entry.get("attributes").get("userPassword")
                # password can be unicode
                if to_bytes(pw) == to_bytes(password):
                    correct_password = True
                elif pw.startswith('{SSHA}'):
                    correct_password = ldap_salted_sha1.verify(password, pw)
                else:
                    correct_password = False
        self.con_obj = Connection(self.directory)
        self.con_obj.bound = correct_password
        return self.con_obj