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# -*- coding: utf-8 -*-
"""Test clr enum support."""
import pytest
import Python.Test as Test
from .utils import DictProxyType
def test_enum_standard_attrs():
"""Test standard enum attributes."""
from System import DayOfWeek
assert DayOfWeek.__name__ == 'DayOfWeek'
assert DayOfWeek.__module__ == 'System'
assert isinstance(DayOfWeek.__dict__, DictProxyType)
assert DayOfWeek.__doc__ is None
def test_enum_get_member():
"""Test access to enum members."""
from System import DayOfWeek
assert DayOfWeek.Sunday == DayOfWeek(0)
assert DayOfWeek.Monday == DayOfWeek(1)
assert DayOfWeek.Tuesday == DayOfWeek(2)
assert DayOfWeek.Wednesday == DayOfWeek(3)
assert DayOfWeek.Thursday == DayOfWeek(4)
assert DayOfWeek.Friday == DayOfWeek(5)
assert DayOfWeek.Saturday == DayOfWeek(6)
def test_missing_enum_member_suggests_similar():
"""A mistyped enum member suggests the correct member by its .NET name."""
from System import DayOfWeek
with pytest.raises(AttributeError) as exc_info:
_ = DayOfWeek.Sundey
message = str(exc_info.value)
# Access on the type object itself uses the "type object 'T'" wording.
assert "type object 'DayOfWeek'" in message
assert "Sundey" in message
assert "Did you mean" in message
# Enum values are exposed in UPPER_SNAKE (the fork's PEP8 constant convention), so that is
# the form suggested -- DayOfWeek.SUNDAY, not 'Sunday'.
assert "'SUNDAY'" in message
def test_missing_enum_member_no_similar():
"""An enum member with no similar name keeps the standard message (no hint)."""
from System import DayOfWeek
with pytest.raises(AttributeError) as exc_info:
_ = DayOfWeek.Xyzzy
message = str(exc_info.value)
assert "Xyzzy" in message
assert "Did you mean" not in message
def test_missing_enum_member_hasattr_still_false():
"""Enriching the AttributeError must not break hasattr() on enum types."""
from System import DayOfWeek
assert hasattr(DayOfWeek, "Sunday")
assert not hasattr(DayOfWeek, "Sundey")
def test_missing_enum_member_suffix_extended_name_suggested():
"""A guessed name that the real member extends with a suffix must be suggested,
from both the PascalCase and the UPPER_SNAKE spelling of the guess."""
import re
from Python.Test import SuggestionEnum
for miss in ("InteractiveBrokers", "INTERACTIVE_BROKERS"):
with pytest.raises(AttributeError) as exc_info:
getattr(SuggestionEnum, miss)
message = str(exc_info.value)
assert "Did you mean" in message
suggested = re.findall(r"'([^']+)'", message.split("Did you mean")[1])
assert "INTERACTIVE_BROKERS_BROKERAGE" in suggested
assert "INTERACTIVE_BROKERS_FIX" in suggested
assert "BINANCE" not in suggested
def test_byte_enum():
"""Test byte enum."""
assert Test.ByteEnum.Zero == Test.ByteEnum(0)
assert Test.ByteEnum.One == Test.ByteEnum(1)
assert Test.ByteEnum.Two == Test.ByteEnum(2)
def test_sbyte_enum():
"""Test sbyte enum."""
assert Test.SByteEnum.Zero == Test.SByteEnum(0)
assert Test.SByteEnum.One == Test.SByteEnum(1)
assert Test.SByteEnum.Two == Test.SByteEnum(2)
def test_short_enum():
"""Test short enum."""
assert Test.ShortEnum.Zero == Test.ShortEnum(0)
assert Test.ShortEnum.One == Test.ShortEnum(1)
assert Test.ShortEnum.Two == Test.ShortEnum(2)
def test_ushort_enum():
"""Test ushort enum."""
assert Test.UShortEnum.Zero == Test.UShortEnum(0)
assert Test.UShortEnum.One == Test.UShortEnum(1)
assert Test.UShortEnum.Two == Test.UShortEnum(2)
def test_int_enum():
"""Test int enum."""
assert Test.IntEnum.Zero == Test.IntEnum(0)
assert Test.IntEnum.One == Test.IntEnum(1)
assert Test.IntEnum.Two == Test.IntEnum(2)
def test_uint_enum():
"""Test uint enum."""
assert Test.UIntEnum.Zero == Test.UIntEnum(0)
assert Test.UIntEnum.One == Test.UIntEnum(1)
assert Test.UIntEnum.Two == Test.UIntEnum(2)
def test_long_enum():
"""Test long enum."""
assert Test.LongEnum.Zero == Test.LongEnum(0)
assert Test.LongEnum.One == Test.LongEnum(1)
assert Test.LongEnum.Two == Test.LongEnum(2)
def test_ulong_enum():
"""Test ulong enum."""
assert Test.ULongEnum.Zero == Test.ULongEnum(0)
assert Test.ULongEnum.One == Test.ULongEnum(1)
assert Test.ULongEnum.Two == Test.ULongEnum(2)
def test_long_enum_to_int():
assert int(Test.LongEnum.Max) == 9223372036854775807
assert int(Test.LongEnum.Min) == -9223372036854775808
def test_ulong_enum_to_int():
assert int(Test.ULongEnum.Max) == 18446744073709551615
def test_instantiate_enum_fails():
"""Test that instantiation of an enum class fails."""
from System import DayOfWeek
with pytest.raises(TypeError):
_ = DayOfWeek()
def test_subclass_enum_fails():
"""Test that subclassing of an enumeration fails."""
from System import DayOfWeek
with pytest.raises(TypeError):
class Boom(DayOfWeek):
pass
_ = Boom
def test_enum_set_member_fails():
"""Test that setattr operations on enumerations fail."""
from System import DayOfWeek
with pytest.raises(TypeError):
DayOfWeek.Sunday = 13
with pytest.raises(TypeError):
del DayOfWeek.Sunday
def test_enum_undefined_value():
"""Test enumeration conversion with FlagsAttribute set."""
# This works because the FlagsField enum has FlagsAttribute.
Test.FieldTest().FlagsField = Test.FlagsEnum(99)
# This should fail because our test enum doesn't have it.
with pytest.raises(ValueError):
Test.FieldTest().EnumField = Test.ShortEnum(20)
# explicitly permit undefined values
Test.FieldTest().EnumField = Test.ShortEnum(20, True)
def test_enum_conversion():
"""Test enumeration conversion."""
ob = Test.FieldTest()
assert ob.EnumField == Test.ShortEnum(0)
ob.EnumField = Test.ShortEnum.One
assert ob.EnumField == Test.ShortEnum(1)
with pytest.raises(OverflowError):
Test.FieldTest().EnumField = Test.ShortEnum(100000)
with pytest.raises(ValueError):
Test.FieldTest().EnumField = "str"
# QuantConnect fork: an int is accepted and converted to the enum type.
ft = Test.FieldTest()
ft.EnumField = 1
assert ft.EnumField == Test.ShortEnum(1)