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)
def test_write_source_with_custom_types():
data = {'a': 1, 'b': {'c': 2}}
types = {
'a': CustomType(customize=str, reset=int),
'c': CustomType(lambda v: 2*v, lambda v: v/2)
}
config = DictSource(data, type_map=types)
config.a = '1'
config.b.c = 4
assert config._data == data
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(KeyError):
config.b.d.e
