# -*- coding: utf-8 -*-

"""Test CLR class constructor support."""

import pytest
import sys

import System


def test_enum_constructor():
 """Test enum constructor args"""
 from System import TypeCode
 from Python.Test import EnumConstructorTest

 ob = EnumConstructorTest(TypeCode.Int32)
 assert ob.value == TypeCode.Int32


def test_flags_constructor():
 """Test flags constructor args"""
 from Python.Test import FlagsConstructorTest
 from System.IO import FileAccess

 flags = FileAccess.Read | FileAccess.Write
 ob = FlagsConstructorTest(flags)
 assert ob.value == flags


def test_struct_constructor():
 """Test struct constructor args"""
 from System import Guid
 from Python.Test import StructConstructorTest

 guid = Guid.NewGuid()
 ob = StructConstructorTest(guid)
 assert ob.value == guid


def test_datetime():
 inst = System.DateTime(2021, 12, 29)
 assert inst.Year == 2021


def test_subclass_constructor():
 """Test subclass constructor args"""
 from Python.Test import SubclassConstructorTest

 class Sub(System.Exception):
 pass

 instance = Sub()
 ob = SubclassConstructorTest(instance)
 assert isinstance(ob.value, System.Exception)


def test_multiple_constructor():
 from Python.Test import MultipleConstructorsTest

 # Test parameterless
 ob = MultipleConstructorsTest()
 assert ob.value == ""


def test_default_constructor_fallback():
 from Python.Test import DefaultConstructorMatching

 ob = DefaultConstructorMatching(2)
 assert ob.a == 2

 with pytest.raises(TypeError):
 ob = DefaultConstructorMatching("2")


def test_constructor_leak():
 from System import Uri
 from Python.Runtime import Runtime

 uri = Uri("http://www.python.org")
 Runtime.TryCollectingGarbage(20)
 ref_count = sys.getrefcount(uri)

 # check disabled due to GC uncertainty
 # assert ref_count == 1



def test_string_constructor():
 from System import String, Char, Array

 ob = String('A', 10)
 assert ob == 'A' * 10

 arr = Array[Char](10)
 for i in range(10):
 arr[i] = Char(str(i))

 ob = String(arr)
 assert ob == "0123456789"

 ob = String(arr, 5, 4)
 assert ob == "5678"