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# coding=utf-8

# Licensed 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 unittest

from diffusers import __version__

from diffusers.utils import deprecate

class DeprecateTester(unittest.TestCase):

higher_version = ".".join([str(int(__version__.split(".")[0]) + 1)] + __version__.split(".")[1:])

lower_version = "0.0.1"

def test_deprecate_function_arg(self):

kwargs = {"deprecated_arg": 4}

with self.assertWarns(FutureWarning) as warning:

output = deprecate("deprecated_arg", self.higher_version, "message", take_from=kwargs)

assert output == 4

assert (

str(warning.warning)

== f"The `deprecated_arg` argument is deprecated and will be removed in version {self.higher_version}."

" message"

)

def test_deprecate_function_arg_tuple(self):

kwargs = {"deprecated_arg": 4}

with self.assertWarns(FutureWarning) as warning:

output = deprecate(("deprecated_arg", self.higher_version, "message"), take_from=kwargs)

assert output == 4

assert (

str(warning.warning)

== f"The `deprecated_arg` argument is deprecated and will be removed in version {self.higher_version}."

" message"

)

def test_deprecate_function_args(self):

kwargs = {"deprecated_arg_1": 4, "deprecated_arg_2": 8}

with self.assertWarns(FutureWarning) as warning:

output_1, output_2 = deprecate(

("deprecated_arg_1", self.higher_version, "Hey"),

("deprecated_arg_2", self.higher_version, "Hey"),

take_from=kwargs,

)

assert output_1 == 4

assert output_2 == 8

assert (

str(warning.warnings[0].message)

== "The `deprecated_arg_1` argument is deprecated and will be removed in version"

f" {self.higher_version}. Hey"

)

assert (

str(warning.warnings[1].message)

== "The `deprecated_arg_2` argument is deprecated and will be removed in version"

f" {self.higher_version}. Hey"

)

def test_deprecate_function_incorrect_arg(self):

kwargs = {"deprecated_arg": 4}

with self.assertRaises(TypeError) as error:

deprecate(("wrong_arg", self.higher_version, "message"), take_from=kwargs)

assert "test_deprecate_function_incorrect_arg in" in str(error.exception)

assert "line" in str(error.exception)

assert "got an unexpected keyword argument `deprecated_arg`" in str(error.exception)

def test_deprecate_arg_no_kwarg(self):

with self.assertWarns(FutureWarning) as warning:

deprecate(("deprecated_arg", self.higher_version, "message"))

assert (

str(warning.warning)

== f"`deprecated_arg` is deprecated and will be removed in version {self.higher_version}. message"

)

def test_deprecate_args_no_kwarg(self):

with self.assertWarns(FutureWarning) as warning:

deprecate(

("deprecated_arg_1", self.higher_version, "Hey"),

("deprecated_arg_2", self.higher_version, "Hey"),

)

assert (

str(warning.warnings[0].message)

== f"`deprecated_arg_1` is deprecated and will be removed in version {self.higher_version}. Hey"

)

assert (

str(warning.warnings[1].message)

== f"`deprecated_arg_2` is deprecated and will be removed in version {self.higher_version}. Hey"

)

def test_deprecate_class_obj(self):

class Args:

arg = 5

with self.assertWarns(FutureWarning) as warning:

arg = deprecate(("arg", self.higher_version, "message"), take_from=Args())

assert arg == 5

assert (

str(warning.warning)

== f"The `arg` attribute is deprecated and will be removed in version {self.higher_version}. message"

)

def test_deprecate_class_objs(self):

class Args:

arg = 5

foo = 7

with self.assertWarns(FutureWarning) as warning:

arg_1, arg_2 = deprecate(

("arg", self.higher_version, "message"),

("foo", self.higher_version, "message"),

("does not exist", self.higher_version, "message"),

take_from=Args(),

)

assert arg_1 == 5

assert arg_2 == 7

assert (

str(warning.warning)

== f"The `arg` attribute is deprecated and will be removed in version {self.higher_version}. message"

)

assert (

str(warning.warnings[0].message)

== f"The `arg` attribute is deprecated and will be removed in version {self.higher_version}. message"

)

assert (

str(warning.warnings[1].message)

== f"The `foo` attribute is deprecated and will be removed in version {self.higher_version}. message"

)

def test_deprecate_incorrect_version(self):

kwargs = {"deprecated_arg": 4}

with self.assertRaises(ValueError) as error:

deprecate(("wrong_arg", self.lower_version, "message"), take_from=kwargs)

assert (

str(error.exception)

== "The deprecation tuple ('wrong_arg', '0.0.1', 'message') should be removed since diffusers' version"

f" {__version__} is >= {self.lower_version}"

)

def test_deprecate_incorrect_no_standard_warn(self):

with self.assertWarns(FutureWarning) as warning:

deprecate(("deprecated_arg", self.higher_version, "This message is better!!!"), standard_warn=False)

assert str(warning.warning) == "This message is better!!!"

def test_deprecate_stacklevel(self):

with self.assertWarns(FutureWarning) as warning:

deprecate(("deprecated_arg", self.higher_version, "This message is better!!!"), standard_warn=False)

assert str(warning.warning) == "This message is better!!!"

assert "diffusers/tests/test_utils.py" in warning.filename

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