def test_layers_view():
    X = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
    L = np.array([[10, 11, 12], [13, 14, 15], [16, 17, 18]])
    real_adata = ad.AnnData(X)
    real_adata.layers["L"] = L
    view_adata = real_adata[1:, 1:]
    real_hash = joblib.hash(real_adata)
    view_hash = joblib.hash(view_adata)

    assert view_adata.is_view

    with pytest.raises(ValueError):
        view_adata.layers["L2"] = L + 2

    assert view_adata.is_view  # Failing to set layer item makes adata not view
    assert real_hash == joblib.hash(real_adata)
    assert view_hash == joblib.hash(view_adata)

    view_adata.layers["L2"] = L[1:, 1:] + 2

    assert not view_adata.is_view
    assert real_hash == joblib.hash(real_adata)
    assert view_hash != joblib.hash(view_adata)
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