eland/tests/ml/test_optional_dependency_pytest.py
2020-11-16 11:30:41 -06:00

68 lines
2.1 KiB
Python

# Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. 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 sys
import types
import pytest
from eland.ml._optional import VERSIONS, import_optional_dependency
def test_import_optional():
match = "Missing .*notapackage.* pip .* conda .* notapackage"
with pytest.raises(ImportError, match=match):
import_optional_dependency("notapackage")
result = import_optional_dependency("notapackage", raise_on_missing=False)
assert result is None
def test_xlrd_version_fallback():
pytest.importorskip("xlrd")
import_optional_dependency("xlrd")
def test_bad_version():
name = "fakemodule"
module = types.ModuleType(name)
module.__version__ = "0.9.0"
sys.modules[name] = module
VERSIONS[name] = "1.0.0"
match = "Eland requires .*1.0.0.* of .fakemodule.*'0.9.0'"
with pytest.raises(ImportError, match=match):
import_optional_dependency("fakemodule")
with pytest.warns(UserWarning):
result = import_optional_dependency("fakemodule", on_version="warn")
assert result is None
module.__version__ = "1.0.0" # exact match is OK
result = import_optional_dependency("fakemodule")
assert result is module
def test_no_version_raises():
name = "fakemodule"
module = types.ModuleType(name)
sys.modules[name] = module
VERSIONS[name] = "1.0.0"
with pytest.raises(ImportError, match="Can't determine .* fakemodule"):
import_optional_dependency(name)