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# Copyright (c) OpenMMLab. All rights reserved.
import pytest
import mmcv
from mmcv import deprecated_api_warning
from mmcv.utils.misc import has_method
def test_to_ntuple():
single_number = 2
assert mmcv.utils.to_1tuple(single_number) == (single_number, )
assert mmcv.utils.to_2tuple(single_number) == (single_number,
single_number)
assert mmcv.utils.to_3tuple(single_number) == (single_number,
single_number,
single_number)
assert mmcv.utils.to_4tuple(single_number) == (single_number,
single_number,
single_number,
single_number)
assert mmcv.utils.to_ntuple(5)(single_number) == (single_number,
single_number,
single_number,
single_number,
single_number)
assert mmcv.utils.to_ntuple(6)(single_number) == (single_number,
single_number,
single_number,
single_number,
single_number,
single_number)
def test_iter_cast():
assert mmcv.list_cast([1, 2, 3], int) == [1, 2, 3]
assert mmcv.list_cast(['1.1', 2, '3'], float) == [1.1, 2.0, 3.0]
assert mmcv.list_cast([1, 2, 3], str) == ['1', '2', '3']
assert mmcv.tuple_cast((1, 2, 3), str) == ('1', '2', '3')
assert next(mmcv.iter_cast([1, 2, 3], str)) == '1'
with pytest.raises(TypeError):
mmcv.iter_cast([1, 2, 3], '')
with pytest.raises(TypeError):
mmcv.iter_cast(1, str)
def test_is_seq_of():
assert mmcv.is_seq_of([1.0, 2.0, 3.0], float)
assert mmcv.is_seq_of([(1, ), (2, ), (3, )], tuple)
assert mmcv.is_seq_of((1.0, 2.0, 3.0), float)
assert mmcv.is_list_of([1.0, 2.0, 3.0], float)
assert not mmcv.is_seq_of((1.0, 2.0, 3.0), float, seq_type=list)
assert not mmcv.is_tuple_of([1.0, 2.0, 3.0], float)
assert not mmcv.is_seq_of([1.0, 2, 3], int)
assert not mmcv.is_seq_of((1.0, 2, 3), int)
def test_slice_list():
in_list = [1, 2, 3, 4, 5, 6]
assert mmcv.slice_list(in_list, [1, 2, 3]) == [[1], [2, 3], [4, 5, 6]]
assert mmcv.slice_list(in_list, [len(in_list)]) == [in_list]
with pytest.raises(TypeError):
mmcv.slice_list(in_list, 2.0)
with pytest.raises(ValueError):
mmcv.slice_list(in_list, [1, 2])
def test_concat_list():
assert mmcv.concat_list([[1, 2]]) == [1, 2]
assert mmcv.concat_list([[1, 2], [3, 4, 5], [6]]) == [1, 2, 3, 4, 5, 6]
def test_requires_package(capsys):
@mmcv.requires_package('nnn')
def func_a():
pass
@mmcv.requires_package(['numpy', 'n1', 'n2'])
def func_b():
pass
@mmcv.requires_package('numpy')
def func_c():
return 1
with pytest.raises(RuntimeError):
func_a()
out, _ = capsys.readouterr()
assert out == ('Prerequisites "nnn" are required in method "func_a" but '
'not found, please install them first.\n')
with pytest.raises(RuntimeError):
func_b()
out, _ = capsys.readouterr()
assert out == (
'Prerequisites "n1, n2" are required in method "func_b" but not found,'
' please install them first.\n')
assert func_c() == 1
def test_requires_executable(capsys):
@mmcv.requires_executable('nnn')
def func_a():
pass
@mmcv.requires_executable(['ls', 'n1', 'n2'])
def func_b():
pass
@mmcv.requires_executable('mv')
def func_c():
return 1
with pytest.raises(RuntimeError):
func_a()
out, _ = capsys.readouterr()
assert out == ('Prerequisites "nnn" are required in method "func_a" but '
'not found, please install them first.\n')
with pytest.raises(RuntimeError):
func_b()
out, _ = capsys.readouterr()
assert out == (
'Prerequisites "n1, n2" are required in method "func_b" but not found,'
' please install them first.\n')
assert func_c() == 1
def test_import_modules_from_strings():
# multiple imports
import os.path as osp_
import sys as sys_
osp, sys = mmcv.import_modules_from_strings(['os.path', 'sys'])
assert osp == osp_
assert sys == sys_
# single imports
osp = mmcv.import_modules_from_strings('os.path')
assert osp == osp_
# No imports
assert mmcv.import_modules_from_strings(None) is None
assert mmcv.import_modules_from_strings([]) is None
assert mmcv.import_modules_from_strings('') is None
# Unsupported types
with pytest.raises(TypeError):
mmcv.import_modules_from_strings(1)
with pytest.raises(TypeError):
mmcv.import_modules_from_strings([1])
# Failed imports
with pytest.raises(ImportError):
mmcv.import_modules_from_strings('_not_implemented_module')
with pytest.warns(UserWarning):
imported = mmcv.import_modules_from_strings(
'_not_implemented_module', allow_failed_imports=True)
assert imported is None
with pytest.warns(UserWarning):
imported = mmcv.import_modules_from_strings(
['os.path', '_not_implemented'], allow_failed_imports=True)
assert imported[0] == osp
assert imported[1] is None
def test_is_method_overridden():
class Base:
def foo1():
pass
def foo2():
pass
class Sub(Base):
def foo1():
pass
# test passing sub class directly
assert mmcv.is_method_overridden('foo1', Base, Sub)
assert not mmcv.is_method_overridden('foo2', Base, Sub)
# test passing instance of sub class
sub_instance = Sub()
assert mmcv.is_method_overridden('foo1', Base, sub_instance)
assert not mmcv.is_method_overridden('foo2', Base, sub_instance)
# base_class should be a class, not instance
base_instance = Base()
with pytest.raises(AssertionError):
mmcv.is_method_overridden('foo1', base_instance, sub_instance)
def test_has_method():
class Foo:
def __init__(self, name):
self.name = name
def print_name(self):
print(self.name)
foo = Foo('foo')
assert not has_method(foo, 'name')
assert has_method(foo, 'print_name')
def test_deprecated_api_warning():
@deprecated_api_warning(name_dict=dict(old_key='new_key'))
def dummy_func(new_key=1):
return new_key
# replace `old_key` to `new_key`
assert dummy_func(old_key=2) == 2
# The expected behavior is to replace the
# deprecated key `old_key` to `new_key`,
# but got them in the arguments at the same time
with pytest.raises(AssertionError):
dummy_func(old_key=1, new_key=2)
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