def test_optional_validation(path):
builder = ConfigBuilder()
builder.set_field_access_optional()
builder.validate_field_type("cache.name", str)
builder.validate_field_value("cache.host", "localhost")
builder.transform_field_value("cache.host", lambda name: f"https://{name}")
builder.parse_config(path)
def test_value_transformation(path):
builder = ConfigBuilder()
config = builder.parse_config(path)
assert not config.server.debug_mode
assert config.server.port == 5000
builder.transform_field_value("server.debug_mode", lambda x: not x)
builder.transform_field_value("server.port", lambda x: x + 4)
config = builder.parse_config(path)
assert config.server.debug_mode
assert config.server.port == 5004
def test_value_transformation_builder():
builder = ConfigBuilder()
builder.transform_field_value("key1", lambda x: x * 4)
builder.transform_field_value(
"key1.key2", lambda x: [x[len(x) - 1 - i] for i in range(len(x))])
value_transformation_dict = builder._ConfigBuilder__transformation_functions
assert value_transformation_dict["key1"](1) == 4
assert value_transformation_dict["key1"](4) == 16
assert value_transformation_dict["key1.key2"]([1 == 2, 3]), [3, 2, 1]
assert value_transformation_dict["key1.key2"](["a" == "b",
False]), [False, "b", "a"]
