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 search(self, search_base=None, search_scope=None,
               search_filter=None, attributes=None, paged_size=5,
               size_limit=0, paged_cookie=None):
        s_filter = list()
        candidates = list()
        self.response = list()
        self.result = dict()

        try:
            if isinstance(search_filter, bytes):
                # We need to convert to unicode otherwise pyparsing will not
                # find the u"ö"
                search_filter = to_unicode(search_filter)
            expr = Connection._parse_filter()
            s_filter = expr.parseString(search_filter).asList()[0]
        except pyparsing.ParseBaseException as exx:
            # Just for debugging purposes
            s = "{!s}".format(exx)

        for item in s_filter:
            if item[0] in self.operation:
                candidates = self.operation.get(item[0])(search_base,
                                                         s_filter)
        self.response = Connection._deDuplicate(candidates)

        return True