def test_builtin_converters(converter, value, customized, reset):
data = {'a': value}
config = DictSource(data, converters=[converter])
assert config.a == customized
del config.a
config.a = customized
assert config._data['a'] == reset
def test_write_source_with_converters():
data = {'a': 1, 'b': {'c': 2}}
converter_list = [
('a', str, int),
('c', lambda v: 2 * v, lambda v: v / 2),
]
config = DictSource(data, converters=converter_list)
config.a = '1'
config.b.c = 4
assert config._data == data
def test_prevent_writing_to_locked_source():
data = {'a': 1, 'b': {'c': 2, 'd': {'e': 3}}}
config = DictSource(data, readonly=True)
with pytest.raises(TypeError) as exc_info:
config.a = 10
assert 'locked' in str(exc_info.value)
with pytest.raises(TypeError) as exc_info:
config.b.c = 20
assert 'locked' in str(exc_info.value)
def test_write_cached_dict_source():
config = DictSource({}, cached=True)
config.a = 1
config.b = {}
config.b.c = 2
config.b.d = {}
config.b.d.e = 3
assert config._data == {}
config.write_cache()
assert config._data == {'a': 1, 'b': {'c': 2, 'd': {'e': 3}}}
def test_write_dict_source():
data = {'a': 1, 'b': {'c': 2, 'd': {'e': 3}}}
config = DictSource(data)
assert config.a == 1
assert config.b.c == 2
assert config.b.d == {'e': 3}
config.a = 10
config.b.c = 20
del config.b.d.e
assert config.a == 10
assert config.b.c == 20
with pytest.raises(AttributeError):
config.b.d.e
