pythonnet/src/tests/test_class.py at pythonnet-jupyter-notebook · KLab/pythonnet · GitHub

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

# TODO: Add tests for ClassicClass, NewStyleClass?

"""Test CLR class support."""

import Python.Test as Test

import System

import pytest

from ._compat import DictProxyType, range

def test_basic_reference_type():

"""Test usage of CLR defined reference types."""

assert System.String.Empty == ""

def test_basic_value_type():

"""Test usage of CLR defined value types."""

assert System.Int32.MaxValue == 2147483647

def test_class_standard_attrs():

"""Test standard class attributes."""

from Python.Test import ClassTest

assert ClassTest.__name__ == 'ClassTest'

assert ClassTest.__module__ == 'Python.Test'

assert isinstance(ClassTest.__dict__, DictProxyType)

assert len(ClassTest.__doc__) > 0

def test_class_docstrings():

"""Test standard class docstring generation"""

from Python.Test import ClassTest

value = 'Void .ctor()'

assert ClassTest.__doc__ == value

def test_class_default_str():

"""Test the default __str__ implementation for managed objects."""

s = System.String("this is a test")

assert str(s) == "this is a test"

def test_class_default_repr():

"""Test the default __repr__ implementation for managed objects."""

s = System.String("this is a test")

assert repr(s).startswith("<System.String object")

def test_non_public_class():

"""Test that non-public classes are inaccessible."""

with pytest.raises(ImportError):

from Python.Test import InternalClass

with pytest.raises(AttributeError):

_ = Test.InternalClass

def test_basic_subclass():

"""Test basic subclass of a managed class."""

from System.Collections import Hashtable

class MyTable(Hashtable):

def how_many(self):

return self.Count

table = MyTable()

assert table.__class__.__name__.endswith('MyTable')

assert type(table).__name__.endswith('MyTable')

assert len(table.__class__.__bases__) == 1

assert table.__class__.__bases__[0] == Hashtable

assert table.how_many() == 0

assert table.Count == 0

table.set_Item('one', 'one')

assert table.how_many() == 1

assert table.Count == 1

def test_subclass_with_no_arg_constructor():

"""Test subclass of a managed class with a no-arg constructor."""

from Python.Test import ClassCtorTest1

class SubClass(ClassCtorTest1):

def __init__(self, name):

self.name = name

# This failed in earlier versions

_ = SubClass('test')

def test_subclass_with_various_constructors():

"""Test subclass of a managed class with various constructors."""

from Python.Test import ClassCtorTest2

class SubClass(ClassCtorTest2):

def __init__(self, v):

ClassCtorTest2.__init__(self)

self.value = v

inst = SubClass('test')

assert inst.value == 'test'

class SubClass2(ClassCtorTest2):

def __init__(self, v):

ClassCtorTest2.__init__(self)

self.value = v

inst = SubClass2('test')

assert inst.value == 'test'

def test_struct_construction():

"""Test construction of structs."""

from System.Drawing import Point

p = Point()

assert p.X == 0

assert p.Y == 0

p = Point(0, 0)

assert p.X == 0

assert p.Y == 0

p.X = 10

p.Y = 10

assert p.X == 10

assert p.Y == 10

# test strange __new__ interactions

# test weird metatype

# test recursion

# test

def test_ienumerable_iteration():

"""Test iteration over objects supporting IEnumerable."""

from Python.Test import ClassTest

list_ = ClassTest.GetArrayList()

for item in list_:

assert (item > -1) and (item < 10)

dict_ = ClassTest.GetHashtable()

for item in dict_:

cname = item.__class__.__name__

assert cname.endswith('DictionaryEntry')

def test_ienumerator_iteration():

"""Test iteration over objects supporting IEnumerator."""

from Python.Test import ClassTest

chars = ClassTest.GetEnumerator()

for item in chars:

assert item in 'test string'

def test_override_get_item():

"""Test managed subclass overriding __getitem__."""

from System.Collections import Hashtable

class MyTable(Hashtable):

def __getitem__(self, key):

value = Hashtable.__getitem__(self, key)

return 'my ' + str(value)

table = MyTable()

table['one'] = 'one'

table['two'] = 'two'

table['three'] = 'three'

assert table['one'] == 'my one'

assert table['two'] == 'my two'

assert table['three'] == 'my three'

assert table.Count == 3

def test_override_set_item():

"""Test managed subclass overriding __setitem__."""

from System.Collections import Hashtable

class MyTable(Hashtable):

def __setitem__(self, key, value):

value = 'my ' + str(value)

Hashtable.__setitem__(self, key, value)

table = MyTable()

table['one'] = 'one'

table['two'] = 'two'

table['three'] = 'three'

assert table['one'] == 'my one'

assert table['two'] == 'my two'

assert table['three'] == 'my three'

assert table.Count == 3

def test_add_and_remove_class_attribute():

from System import TimeSpan

for _ in range(100):

TimeSpan.new_method = lambda self_: self_.TotalMinutes

ts = TimeSpan.FromHours(1)

assert ts.new_method() == 60

del TimeSpan.new_method

assert not hasattr(ts, "new_method")

def test_comparisons():

from System import DateTimeOffset

from Python.Test import ClassTest

d1 = DateTimeOffset.Parse("2016-11-14")

d2 = DateTimeOffset.Parse("2016-11-15")

assert (d1 == d2) == False

assert (d1 != d2) == True

assert (d1 < d2) == True

assert (d1 <= d2) == True

assert (d1 >= d2) == False

assert (d1 > d2) == False

assert (d1 == d1) == True

assert (d1 != d1) == False

assert (d1 < d1) == False

assert (d1 <= d1) == True

assert (d1 >= d1) == True

assert (d1 > d1) == False

assert (d2 == d1) == False

assert (d2 != d1) == True

assert (d2 < d1) == False

assert (d2 <= d1) == False

assert (d2 >= d1) == True

assert (d2 > d1) == True

with pytest.raises(TypeError):

d1 < None

with pytest.raises(TypeError):

d1 < System.Guid()

# ClassTest does not implement IComparable

c1 = ClassTest()

c2 = ClassTest()

with pytest.raises(TypeError):

c1 < c2

def test_self_callback():

"""Test calling back and forth between this and a c# baseclass."""

class CallbackUser(Test.SelfCallbackTest):

def DoCallback(self):

self.PyCallbackWasCalled = False

self.SameReference = False

return self.Callback(self)

def PyCallback(self, self2):

self.PyCallbackWasCalled = True

self.SameReference = self == self2

testobj = CallbackUser()

testobj.DoCallback()

assert testobj.PyCallbackWasCalled

assert testobj.SameReference

pythonnet/src/tests/test_class.py at pythonnet-jupyter-notebook · KLab/pythonnet · GitHub

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