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Copy pathtest_types.py
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138 lines (98 loc) · 4.14 KB
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import pyarrow as pa
import pyarrow.types as types
def test_is_boolean():
assert types.is_boolean(pa.bool_())
assert not types.is_boolean(pa.int8())
def test_is_integer():
signed_ints = [pa.int8(), pa.int16(), pa.int32(), pa.int64()]
unsigned_ints = [pa.uint8(), pa.uint16(), pa.uint32(), pa.uint64()]
for t in signed_ints + unsigned_ints:
assert types.is_integer(t)
for t in signed_ints:
assert types.is_signed_integer(t)
assert not types.is_unsigned_integer(t)
for t in unsigned_ints:
assert types.is_unsigned_integer(t)
assert not types.is_signed_integer(t)
assert not types.is_integer(pa.float32())
assert not types.is_signed_integer(pa.float32())
def test_is_floating():
for t in [pa.float16(), pa.float32(), pa.float64()]:
assert types.is_floating(t)
assert not types.is_floating(pa.int32())
def test_is_null():
assert types.is_null(pa.null())
assert not types.is_null(pa.list_(pa.int32()))
def test_is_decimal():
assert types.is_decimal(pa.decimal(19, 4))
assert not types.is_decimal(pa.int32())
def test_is_list():
assert types.is_list(pa.list_(pa.int32()))
assert not types.is_list(pa.int32())
def test_is_dictionary():
assert types.is_dictionary(
pa.dictionary(pa.int32(),
pa.array(['a', 'b', 'c'])))
assert not types.is_dictionary(pa.int32())
def test_is_nested_or_struct():
struct_ex = pa.struct([pa.field('a', pa.int32()),
pa.field('b', pa.int8()),
pa.field('c', pa.string())])
assert types.is_struct(struct_ex)
assert not types.is_struct(pa.list_(pa.int32()))
assert types.is_nested(struct_ex)
assert types.is_nested(pa.list_(pa.int32()))
assert not types.is_nested(pa.int32())
# TODO(wesm): Union types not yet implemented in pyarrow
# def test_is_union():
# assert types.is_union(pa.union([pa.field('a', pa.int32()),
# pa.field('b', pa.int8()),
# pa.field('c', pa.string())]))
# assert not types.is_union(pa.list_(pa.int32()))
# TODO(wesm): is_map, once implemented
def test_is_binary_string():
assert types.is_binary(pa.binary())
assert not types.is_binary(pa.string())
assert types.is_string(pa.string())
assert types.is_unicode(pa.string())
assert not types.is_string(pa.binary())
assert types.is_fixed_size_binary(pa.binary(5))
assert not types.is_fixed_size_binary(pa.binary())
def test_is_temporal_date_time_timestamp():
date_types = [pa.date32(), pa.date64()]
time_types = [pa.time32('s'), pa.time64('ns')]
timestamp_types = [pa.timestamp('ms')]
for case in date_types + time_types + timestamp_types:
assert types.is_temporal(case)
for case in date_types:
assert types.is_date(case)
assert not types.is_time(case)
assert not types.is_timestamp(case)
for case in time_types:
assert types.is_time(case)
assert not types.is_date(case)
assert not types.is_timestamp(case)
for case in timestamp_types:
assert types.is_timestamp(case)
assert not types.is_date(case)
assert not types.is_time(case)
assert not types.is_temporal(pa.int32())
def test_timestamp_type():
# See ARROW-1683
assert isinstance(pa.timestamp('ns'), pa.TimestampType)