def test_map_with_multiple_nested_mappings_for_one_attribute_when_target_type_known(
self):
# given
root_mapper = ObjectMapper.from_prototype(
TestClassSomeProperty1(None).__dict__,
TestClassSomeProperty2(
some_property=TestClassSomePropertyEmptyInit2()))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(
TestClassSomePropertyEmptyInit1().__dict__,
TestClassSomeProperty2(None)))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(
TestClassSomePropertyEmptyInit1().__dict__,
TestClassSomePropertyEmptyInit2()))
# when
mapped_object = root_mapper.map(
dict(some_property=dict(some_property_02="nested_value_02")))
# then
assert_that(mapped_object).is_instance_of(TestClassSomeProperty2)
nested_mapped_obj = mapped_object.some_property
assert_that(nested_mapped_obj).is_not_none()
assert_that(nested_mapped_obj).is_instance_of(
TestClassSomePropertyEmptyInit2)
assert_that(
nested_mapped_obj.some_property_02).is_equal_to("nested_value_02")
def test_map_unknown_property_should_raise_exception(self):
# given
mapper = ObjectMapper.from_class(
TestClassSomeProperty1, TestClassMappedProperty).custom_mappings(
{"some_property": "unknown"})
# when
try:
mapper.map(TestClassSomeProperty1(some_property="some_value"))
self.fail("Should raise AttributeError")
except AttributeError as er:
# then
assert_that(er.args[0]).contains("unknown")
# given
mapper = ObjectMapper.from_class(
TestClassSomeProperty1, TestClassMappedProperty).custom_mappings(
{"unknown": "mapped_property"})
# when
try:
mapper.map(TestClassSomeProperty1(some_property="some_value"))
self.fail("Should raise AttributeError")
except AttributeError as er:
# then
assert_that(er.args[0]).contains("unknown")
def test_map_to_dict_with_nested_mapper(self):
# given
root_mapper = ObjectMapper.from_prototype(TestClassSomeProperty1(None), TestClassSomeProperty2(None).__dict__)
root_mapper.nested_mapper(
ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(), TestClassSomePropertyEmptyInit2().__dict__))
# when
mapped_object = root_mapper.map(TestClassSomeProperty1(
some_property="some_value",
some_property_02=TestClassSomePropertyEmptyInit1(
some_property="nested_value",
some_property_02="nested_value_02",
some_property_03="nested_value_03",
unmapped_property1="unmapped_nested_value"),
some_property_03="some_value_03",
unmapped_property1="unmapped_value"))
# then
assert_that(mapped_object).is_instance_of(dict)
assert_that(mapped_object['some_property']).is_equal_to("some_value")
assert_that(mapped_object['some_property_03']).is_equal_to("some_value_03")
assert_that(mapped_object).does_not_contain_key('unmapped_property2')
assert_that(mapped_object).contains_key('some_property_02')
nested_mapped_obj = mapped_object['some_property_02']
assert_that(nested_mapped_obj).is_instance_of(dict)
assert_that(nested_mapped_obj['some_property']).is_equal_to("nested_value")
assert_that(nested_mapped_obj['some_property_02']).is_equal_to("nested_value_02")
assert_that(nested_mapped_obj['some_property_03']).is_equal_to("nested_value_03")
assert_that(nested_mapped_obj).does_not_contain_key('unmapped_property2')
def test_map_unknown_class_should_raise_exception(self):
try:
ObjectMapper.from_class(TestEmptyClass1,
TestEmptyClass2).map(TestOtherClass())
self.fail("Should raise ValueError")
except ValueError as er:
assert_that(er.args[0]).contains(TestOtherClass.__name__)
def test_map_from_dict_with_nested_mapper(self):
# given
root_mapper = ObjectMapper.from_prototype(TestClassSomeProperty1(None).__dict__, TestClassSomeProperty2(None))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1().__dict__, TestClassSomePropertyEmptyInit2()))
# when
mapped_object = root_mapper.map(dict(
some_property="some_value",
some_property_02=dict(
some_property="nested_value",
some_property_02="nested_value_02",
some_property_03="nested_value_03",
unmapped_property1="unmapped_nested_value"),
some_property_03="some_value_03",
unmapped_property1="unmapped_value"))
# then
assert_that(mapped_object).is_instance_of(TestClassSomeProperty2)
assert_that(mapped_object.some_property).is_equal_to("some_value")
assert_that(mapped_object.some_property_03).is_equal_to("some_value_03")
assert_that(mapped_object.unmapped_property2).is_none()
nested_mapped_obj = mapped_object.some_property_02
assert_that(nested_mapped_obj).is_instance_of(TestClassSomePropertyEmptyInit2)
assert_that(nested_mapped_obj.some_property).is_equal_to("nested_value")
assert_that(nested_mapped_obj.some_property_02).is_equal_to("nested_value_02")
assert_that(nested_mapped_obj.some_property_03).is_equal_to("nested_value_03")
assert_that(nested_mapped_obj.unmapped_property2).is_none()
def test_map_attr_value_when_direction_nor_target_set_should_raise_exception(
self):
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(
TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2).map_attr_value(
"some_property", "some_value", None, None)
def test_map_with_multiple_nested_mappings_when_no_matching_mapper_for_target_type_should_raise_exception(
self):
# given
root_mapper = ObjectMapper.from_prototype(
TestClassSomeProperty1(None).__dict__,
TestClassSomeProperty2(
some_property=TestClassMappedPropertyEmptyInit()))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(
TestClassSomePropertyEmptyInit1().__dict__,
TestClassSomeProperty2(None)))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(
TestClassSomePropertyEmptyInit1().__dict__,
TestClassSomePropertyEmptyInit2()))
with self.assertRaises(ConfigurationException) as context:
root_mapper.map(
dict(some_property=dict(some_property_02="nested_value_02")))
# then
assert_that(context.exception.args[0]).contains("some_property")
assert_that(context.exception.args[0]).contains("dict")
assert_that(context.exception.args[0]).contains(
"TestClassMappedPropertyEmptyInit")
def test_object_mapper_value_converters_when_converter_not_callable_should_raise_exception(
self):
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(
TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2).value_converters(
{"some_property_02": (lambda val: 7, "not_a_function")})
assert_that(context.exception.args[0]).contains("some_property_02")
def test_object_mapper_value_converters_when_converter_not_in_2_element_tuple_should_raise_exception(
self):
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(
TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2).value_converters(
{"some_property_02": (lambda val: 7, )})
assert_that(context.exception.message).contains("some_property_02")
def test_map_attr_value_when_attr_name_unknown_should_raise_exception_rev(
self):
# when
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassSomePropertyEmptyInit2).\
map_attr_value("unknown_property", "some_value", MappingDirection.right_to_left)
# then
assert_that(context.exception.args[0]).contains("unknown_property")
def test_map_attr_value_when_opposite_direction_should_raise_exception_rev(
self):
# when
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassMappedPropertyEmptyInit).\
custom_mappings({"some_property_02": "mapped_property_02"}).\
map_attr_value("mapped_property_02", "some_value", MappingDirection.left_to_right)
# then
assert_that(context.exception.args[0]).contains("mapped_property_02")
assert_that(context.exception.args[0]).contains("left_to_right")
def test_map_attr_value_when_opposite_direction_for_class_should_raise_exception(
self):
# when
with self.assertRaises(ValueError) as context:
ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassMappedPropertyEmptyInit).\
custom_mappings({"some_property_02": "mapped_property_02"}).\
map_attr_value("some_property_02", "some_value", target_class=TestClassSomePropertyEmptyInit1)
# then
assert_that(context.exception.message).contains("some_property_02")
assert_that(context.exception.message).contains(
"TestClassSomePropertyEmptyInit1")
def test_map_when_ambiguous_nested_mapping_should_raise_exception(self):
# given
root_mapper = ObjectMapper.from_prototype(TestClassSomeProperty1(None).__dict__, TestClassSomeProperty2(None))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1().__dict__, TestClassSomePropertyEmptyInit2()))
root_mapper.nested_mapper(
ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1().__dict__, TestClassSomeProperty2(None)))
# when
with self.assertRaises(ConfigurationException) as context:
root_mapper.map(dict(some_property=TestClassSomePropertyEmptyInit1().__dict__))
# then
assert_that(context.exception.message).contains("some_property")
assert_that(context.exception.message).contains("dict")
def test_suppress_implicit_mapping(self):
# given
mapper = ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassSomePropertyEmptyInit2).\
custom_mappings({"some_property": None})
# when
mapped_object = mapper.map(
TestClassSomePropertyEmptyInit1(some_property="some_value",
some_property_02="some_value_02"))
# then
assert_that(mapped_object).is_instance_of(
TestClassSomePropertyEmptyInit2)
assert_that(mapped_object.some_property).is_none()
assert_that(
mapped_object.some_property_02).is_equal_to("some_value_02")
# when
mapped_object_rev = mapper.map(
TestClassSomePropertyEmptyInit2(some_property="some_value",
some_property_02="some_value_02"))
# then
assert_that(mapped_object_rev).is_instance_of(
TestClassSomePropertyEmptyInit1)
assert_that(mapped_object_rev.some_property).is_none()
assert_that(
mapped_object_rev.some_property_02).is_equal_to("some_value_02")
def test_map_explicit_when_ambiguous_nested_mapping_should_raise_exception(self):
# given
root_mapper = ObjectMapper.from_class(dict, TestClassMappedProperty).\
custom_mappings({"some_property": "mapped_property"})
root_mapper.nested_mapper(ObjectMapper.from_class(dict, TestClassSomePropertyEmptyInit2))
root_mapper.nested_mapper(ObjectMapper.from_class(dict, TestClassSomeProperty2))
# when
with self.assertRaises(ConfigurationException) as context:
root_mapper.map(dict(some_property=dict()))
# then
assert_that(context.exception.message).contains("some_property")
assert_that(context.exception.message).contains("mapped_property")
assert_that(context.exception.message).contains("dict")
def test_map_both_ways(self):
# given
mapper = ObjectMapper.from_prototype(
TestClassSomePropertyEmptyInit1(some_property_02="str"),
TestClassSomePropertyEmptyInit2(some_property_02=datetime.now()))
test_datetime = datetime.now()
# when
mapped_object = mapper.map(
TestClassSomePropertyEmptyInit1(
some_property="some_value",
some_property_02=test_datetime.isoformat()))
# then
assert_that(mapped_object).is_instance_of(
TestClassSomePropertyEmptyInit2)
assert_that(mapped_object.some_property).is_equal_to("some_value")
assert_that(mapped_object.some_property_02).is_instance_of(datetime)
assert_that(mapped_object.some_property_02).is_equal_to(test_datetime)
# when
mapped_object_rev = mapper.map(
TestClassSomePropertyEmptyInit2(some_property="some_value",
some_property_02=test_datetime))
# then
assert_that(mapped_object_rev).is_instance_of(
TestClassSomePropertyEmptyInit1)
assert_that(mapped_object_rev.some_property).is_equal_to("some_value")
assert_that(mapped_object_rev.some_property_02).is_instance_of(str)
assert_that(mapped_object_rev.some_property_02).is_equal_to(
test_datetime.isoformat())
def test_map_multiple_explicit_properties(self):
# given
mapper = ObjectMapper.from_class(dict, TestClassMappedProperty).custom_mappings(
{"some_property": "mapped_property",
"some_property_02": "mapped_property_02",
"some_property_03": "mapped_property_03"})
# when
mapped_object = mapper.map(dict(
some_property="some_value",
some_property_02="some_value_02",
some_property_03="some_value_03",
unmapped_property1="unmapped_value"))
# then
assert_that(mapped_object).is_instance_of(TestClassMappedProperty)
assert_that(mapped_object.mapped_property).is_equal_to("some_value")
assert_that(mapped_object.mapped_property_02).is_equal_to("some_value_02")
assert_that(mapped_object.mapped_property_03).is_equal_to("some_value_03")
assert_that(mapped_object.unmapped_property2).is_none()
# when
mapped_object_rev = mapper.map(TestClassMappedProperty(
mapped_property="other_value",
mapped_property_02="other_value_02",
mapped_property_03="other_value_03",
unmapped_property2="unmapped_value"))
# then
assert_that(mapped_object_rev).is_instance_of(dict)
assert_that(mapped_object_rev['some_property']).is_equal_to("other_value")
assert_that(mapped_object_rev['some_property_02']).is_equal_to("other_value_02")
assert_that(mapped_object_rev['some_property_03']).is_equal_to("other_value_03")
assert_that(mapped_object_rev).does_not_contain_key('unmapped_property1')
def test_map_implicit_with_prototype_obj(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomeProperty1(None), TestClassSomeProperty2(None).__dict__)
# when
mapped_object = mapper.map(TestClassSomeProperty1(
some_property="some_value",
some_property_02=None,
some_property_03="some_value_03",
unmapped_property1="unmapped_value"))
# then
assert_that(mapped_object).is_instance_of(dict)
assert_that(mapped_object['some_property']).is_equal_to("some_value")
assert_that(mapped_object['some_property_02']).is_none()
assert_that(mapped_object['some_property_03']).is_equal_to("some_value_03")
assert_that(mapped_object).does_not_contain_key('unmapped_property2')
# when
mapped_object_rev = mapper.map(dict(
some_property="some_value",
some_property_02="some_value_02",
some_property_03="some_value_03",
unmapped_property2="unmapped_value"))
# then
assert_that(mapped_object_rev).is_instance_of(TestClassSomeProperty1)
assert_that(mapped_object_rev.some_property).is_equal_to("some_value")
assert_that(mapped_object_rev.some_property_02).is_equal_to("some_value_02")
assert_that(mapped_object_rev.some_property_03).is_equal_to("some_value_03")
assert_that(mapped_object_rev.unmapped_property1).is_none()
def test_for_dict(self):
# given
mapper = ObjectMapper.for_dict(TestClassSomeProperty1(None))
# when
mapped_object = mapper.map(TestClassSomeProperty1(
some_property="some_value",
some_property_02="some_value_02",
some_property_03="some_value_03"))
# then
assert_that(mapped_object).is_instance_of(dict)
assert_that(mapped_object['some_property']).is_equal_to("some_value")
assert_that(mapped_object['some_property_02']).is_equal_to("some_value_02")
assert_that(mapped_object['some_property_03']).is_equal_to("some_value_03")
# when
mapped_object_rev = mapper.map(dict(
some_property="some_value",
some_property_02="some_value_02",
some_property_03="some_value_03"))
# then
assert_that(mapped_object_rev).is_instance_of(TestClassSomeProperty1)
assert_that(mapped_object_rev.some_property).is_equal_to("some_value")
assert_that(mapped_object_rev.some_property_02).is_equal_to("some_value_02")
assert_that(mapped_object_rev.some_property_03).is_equal_to("some_value_03")
assert_that(mapped_object_rev.unmapped_property1).is_none()
def test_map_attr_name_for_implicit_mapping(self):
# given
mapper = ObjectMapper.from_class(TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2)
# then
assert_that(
mapper.map_attr_name("some_property")).is_equal_to("some_property")
assert_that(mapper.map_attr_name("some_property_02")).is_equal_to(
"some_property_02")
assert_that(mapper.map_attr_name("some_property_03")).is_equal_to(
"some_property_03")
# when
with self.assertRaises(ValueError) as context:
mapper.map_attr_name("unmapped_property1")
# then
assert_that(context.exception.args[0]).contains("unmapped_property1")
# when
with self.assertRaises(ValueError) as context:
mapper.map_attr_name("unmapped_property2")
# then
assert_that(context.exception.args[0]).contains("unmapped_property2")
def test_map_attr_value_rev(self):
# when
mapped_value = ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassMappedPropertyEmptyInit).\
custom_mappings({"some_property_02": "mapped_property_02"}).\
map_attr_value("mapped_property_02", "some_value", MappingDirection.right_to_left)
# then
assert_that(mapped_value).is_equal_to("some_value")
def test_map_attr_value_for_target_class_rev(self):
# when
mapped_value = ObjectMapper.from_class(TestClassSomePropertyEmptyInit1, TestClassMappedPropertyEmptyInit).\
custom_mappings({"some_property_02": "mapped_property_02"}).\
map_attr_value("mapped_property_02", "some_value", target_class=TestClassSomePropertyEmptyInit1)
# then
assert_that(mapped_value).is_equal_to("some_value")
def test_map_attr_name_for_empty_classes_should_raise_exception(self):
# given
mapper = ObjectMapper.from_class(TestEmptyClass1, TestEmptyClass1)
with self.assertRaises(ValueError) as context:
# when
mapper.map_attr_name("unmapped_property")
# then
assert_that(context.exception.args[0]).contains("unmapped_property")
def test_map_with_option_fail_on_get_attr(self):
# given
mapper = ObjectMapper.from_class(
TestClassSomeProperty1, TestEmptyClass1).custom_mappings({
"some_property":
"non_existing_property"
}).options(MapperOptions.fail_on_get_attr == False)
# when
mapped_object = mapper.map(TestEmptyClass1())
# then
assert_that(mapped_object).is_instance_of(TestClassSomeProperty1)
assert_that(mapped_object.some_property).is_none()
# given
mapper_rev = ObjectMapper.from_class(
TestEmptyClass1, TestClassSomeProperty1).custom_mappings({
"non_existing_property":
"some_property"
}).options(MapperOptions.fail_on_get_attr == False)
# when
mapped_object_rev = mapper_rev.map(TestEmptyClass1())
# then
assert_that(mapped_object_rev).is_instance_of(TestClassSomeProperty1)
assert_that(mapped_object_rev.some_property).is_none()
# given
mapper_strict = ObjectMapper.from_class(
TestClassSomeProperty1, TestEmptyClass1).custom_mappings({
"some_property":
"non_existing_property"
}).options(MapperOptions.fail_on_get_attr == True)
try:
# when
mapper_strict.map(TestEmptyClass1())
self.fail("Should raise AttributeError")
except AttributeError as er:
assert_that(er.args[0]).contains("non_existing_property")
def test_other_to_enum_mapping_should_use_default_mapping(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(),
TestClassSomePropertyEmptyInit2(some_property=SomeEnum.some_enum_02))
# when
mapped_object = mapper.map(TestClassSomePropertyEmptyInit1(some_property=TestEmptyClass1()))
# then
assert_that(mapped_object).is_type_of(TestClassSomePropertyEmptyInit2)
assert_that(mapped_object.some_property).is_type_of(TestEmptyClass1)
def test_int_to_unknown_mapping_should_map_to_int(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(), TestClassSomePropertyEmptyInit2())
# when
mapped_object = mapper.map(TestClassSomePropertyEmptyInit1(some_property=1))
# then
assert_that(mapped_object).is_type_of(TestClassSomePropertyEmptyInit2)
assert_that(mapped_object.some_property).is_type_of(int)
assert_that(mapped_object.some_property).is_equal_to(1)
def test_enum_to_unknown_mapping_should_map_to_enum(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(), TestClassSomePropertyEmptyInit2())
# when
mapped_object = mapper.map(TestClassSomePropertyEmptyInit1(some_property=SomeEnum.some_enum_02))
# then
assert_that(mapped_object).is_type_of(TestClassSomePropertyEmptyInit2)
self.assertTrue(type(mapped_object.some_property) == SomeEnum)
assert_that(mapped_object.some_property).is_equal_to(SomeEnum.some_enum_02)
def test_nested_mapper_when_the_same_mapper_added_should_raise_exception(
self):
# given
root_mapper = ObjectMapper.from_class(TestClassSomeProperty1,
TestClassSomeProperty2)
root_mapper.nested_mapper(
ObjectMapper.from_class(TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2))
# when
with self.assertRaises(ConfigurationException) as context:
root_mapper.nested_mapper(
ObjectMapper.from_class(TestClassSomePropertyEmptyInit1,
TestClassSomePropertyEmptyInit2))
# then
assert_that(context.exception.args[0]).contains(
TestClassSomePropertyEmptyInit1.__name__)
assert_that(context.exception.args[0]).contains(
TestClassSomePropertyEmptyInit2.__name__)
def test_enum_to_string_mapping_should_map_to_enum_name(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(),
TestClassSomePropertyEmptyInit2(some_property=''))
# when
mapped_object = mapper.map(TestClassSomePropertyEmptyInit1(some_property=SomeEnum.some_enum_02))
# then
assert_that(mapped_object).is_type_of(TestClassSomePropertyEmptyInit2)
assert_that(mapped_object.some_property).is_type_of(str)
assert_that(mapped_object.some_property).is_equal_to(SomeEnum.some_enum_02.name)
def test_map_unicode_string_to_enum(self):
# given
mapper = ObjectMapper.from_prototype(TestClassSomePropertyEmptyInit1(),
TestClassSomePropertyEmptyInit2(some_property=SomeEnum.some_enum_02))
# when
mapped_object = mapper.map(TestClassSomePropertyEmptyInit1(some_property=str('some_enum_01')))
# then
assert_that(mapped_object).is_type_of(TestClassSomePropertyEmptyInit2)
self.assertTrue(type(mapped_object.some_property) == SomeEnum)
assert_that(mapped_object.some_property).is_equal_to(SomeEnum.some_enum_01)
