tests.test_multiple_inheritance() - Code Metrics - Inspection of "Fill the linecache with something useful." - ionelmc/python-fields - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( dc4131...1e3562 )

by Ionel Cristian

created 2016-04-11 21:39 UTC

tests.test_multiple_inheritance() A

↳ Parent: Project

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Metric	Value
dl	0
loc	12
cc	1
rs	9.4285

from __future__ import print_function

import pickle
try:
    import cPickle
except ImportError:
    import pickle as cPickle
from functools import partial
from itertools import chain

from pytest import fixture
from pytest import raises

from fields import BareFields, make_init_func, InheritableFields
from fields import ComparableMixin
from fields import ConvertibleFields
from fields import ConvertibleMixin
from fields import Fields
from fields import PrintableMixin
from fields import SlotsFields
from fields import Tuple
from fields.extras import RegexValidate
from fields.extras import ValidationError


@fixture(params=[
    partial(pickle.dumps, protocol=i)
    for i in range(pickle.HIGHEST_PROTOCOL)
] + [
    partial(cPickle.dumps, protocol=i)
    for i in range(cPickle.HIGHEST_PROTOCOL)
])
def pickler(request):
    return request.param


@fixture(params=[pickle.loads, cPickle.loads])
def unpickler(request):
    return request.param


@fixture(params=[Fields, SlotsFields])
def impl(request):
    print(request.param)
    return request.param


class G1(Tuple.a.b):
    pass


class G2(Fields.a.b[1].c[2]):
    pass


class G3(Fields.a.b[1].c[2]):
    pass


def test_slots_class_has_slots():
    class Slots(SlotsFields.a.b[1]):
        pass

    i = Slots(0)
    i.a = 1
    assert Slots.__slots__ == ['a', 'b']
    assert i.a == 1
    assert not hasattr(i, "__dict__")
    raises(AttributeError, setattr, i, "bogus", 1)
    raises(AttributeError, getattr, i, "bogus")


def test_slots_class_customizable_slots():
    class Slots(SlotsFields.a.b[1]):
        __slots__ = ["a", "b", "foo", "bar"]

    i = Slots(0)
    i.a = 1
    assert Slots.__slots__ == ["a", "b", "foo", "bar"]
    assert i.a == 1
    assert not hasattr(i, "__dict__")
    i.foo = 2
    assert i.foo == 2
    i.bar = 3
    assert i.bar == 3
    raises(AttributeError, setattr, i, "bogus", 1)
    raises(AttributeError, getattr, i, "bogus")


def test_defaults_on_tuples(impl):
    class Ok(impl.a.b['def']):
        pass
    assert Ok(1).b == 'def'
    assert Ok(1, 2).b == 2


def test_required_after_defaults(impl):
    def test():
        class Fail(impl.a['def'].b):
            pass

    raises(TypeError, test)


def test_extra_args(impl):
    raises(TypeError, impl.a.b, 1, 2, 3)


def test_comparable():
    class C(ComparableMixin.a):
        pass

    raises(TypeError, C, 1, 2, 3)

    class D(BareFields.a.b.c, ComparableMixin.a):
        pass

    assert D(1, 2, 3) == D(1, 3, 4)
    assert D(1, 2, 3) != D(2, 2, 3)


def test_printable():
    class D(BareFields.a.b.c, PrintableMixin.a.b):
        pass

    assert str(D(1, 2, 3)) == "D(a=1, b=2)"


def test_extra_args_2(impl):
    class X1(impl.a.b):
        pass

    raises(TypeError, X1, 1, 2, 3)


def test_missing_args(impl):
    raises(TypeError, impl.a.b, 1)


def test_missing_args_2(impl):
    class X1(impl.a.b):
        pass

    raises(TypeError, X1, 1)


def test_already_specified(impl):
    raises(TypeError, lambda: impl.a[1].a)


def test_already_specified_2(impl):
    raises(TypeError, lambda: impl.a.a)


def test_already_specified_3(impl):
    raises(TypeError, lambda: impl.a.a[2])


def test_already_specified_4(impl):
    raises(TypeError, lambda: impl.a.b.a)


def test_no_field(impl):
    raises(TypeError, lambda: impl[123])


def test_tuple_pickle(pickler, unpickler):
    g = G1(1, 2)
    assert unpickler(pickler(g)) == g


def test_class_pickle(pickler, unpickler):
    g = G2(1, c=0)
    assert unpickler(pickler(g)) == g


def test_slots_class_pickle(pickler, unpickler):
    g = G3(1, c=0)
    assert unpickler(pickler(g)) == g


def test_tuple_factory():
    class Z1(Tuple.a.b):
        pass

    t = Z1(1, 2)
    assert repr(t) == "Z1(a=1, b=2)"


def test_nosubclass(impl):
    T1 = impl.a.b.c[1].d[2]

    t = T1(1, 2)
    assert repr(t) == "FieldsBase(a=1, b=2, c=1, d=2)"


def test_factory(impl):
    class T1(impl.a.b.c[1].d[2]):
        pass

    t = T1(1, 2)
    assert repr(t) == "T1(a=1, b=2, c=1, d=2)"


def test_factory_all_defaults(impl):
    class T2(impl.a[0].b[1].c[2].d[3]):
        pass

    t = T2()
    assert repr(t) == "T2(a=0, b=1, c=2, d=3)"


def test_factory_no_required_after_defaults(impl):
    raises(TypeError, getattr, impl.a[0].b, 'c')


def test_factory_no_required_after_defaults_2(impl):
    raises(TypeError, type, 'Broken', (impl.a[0].b,), {})


def test_factory_t3(impl):
    class T3(impl.a):
        pass

    t = T3(1)
    assert repr(t) == "T3(a=1)"


def test_factory_empty_raise(impl):
    raises(TypeError, type, "T5", (impl,), {})


@fixture
def CmpC(request, impl):
    class CmpC(impl.a.b):
        pass

    return CmpC


def test_equal(CmpC):
    """
    Equal objects are detected as equal.
    """
    assert CmpC(1, 2) == CmpC(1, 2)
    assert not (CmpC(1, 2) != CmpC(1, 2))


def test_unequal_same_class(CmpC):
    """
    Unequal objects of correct type are detected as unequal.
    """
    assert CmpC(1, 2) != CmpC(2, 1)
    assert not (CmpC(1, 2) == CmpC(2, 1))


def test_unequal_different_class(CmpC):
    """
    Unequal objects of differnt type are detected even if their attributes
    match.
    """
    class NotCmpC(object):
        a = 1
        b = 2
    assert CmpC(1, 2) != NotCmpC()
    assert not (CmpC(1, 2) == NotCmpC())


def test_lt(CmpC):

    """
    __lt__ compares objects as tuples of attribute values.
    """
    for a, b in [
        ((1, 2),  (2, 1)),
        ((1, 2),  (1, 3)),
        (("a", "b"), ("b", "a")),
    ]:
        assert CmpC(*a) < CmpC(*b)


def test_lt_unordable(CmpC):
    """
    __lt__ returns NotImplemented if classes differ.
    """
    assert NotImplemented == (CmpC(1, 2).__lt__(42))


def test_le(CmpC):

    """
    __le__ compares objects as tuples of attribute values.
    """
    for a, b in [
        ((1, 2),  (2, 1)),
        ((1, 2),  (1, 3)),
        ((1, 1),  (1, 1)),
        (("a", "b"), ("b", "a")),
        (("a", "b"), ("a", "b")),
    ]:
        assert CmpC(*a) <= CmpC(*b)


def test_le_unordable(CmpC):
    """
    __le__ returns NotImplemented if classes differ.
    """
    assert NotImplemented == (CmpC(1, 2).__le__(42))


def test_gt(CmpC):

    """
    __gt__ compares objects as tuples of attribute values.
    """
    for a, b in [
        ((2, 1), (1, 2)),
        ((1, 3), (1, 2)),
        (("b", "a"), ("a", "b")),
    ]:
        assert CmpC(*a) > CmpC(*b)


def test_gt_unordable(CmpC):
    """
    __gt__ returns NotImplemented if classes differ.
    """
    assert NotImplemented == (CmpC(1, 2).__gt__(42))


def test_ne_unordable(CmpC):
    """
    __gt__ returns NotImplemented if classes differ.
    """
    assert NotImplemented == (CmpC(1, 2).__ne__(42))


def test_ge(CmpC):

    """
    __ge__ compares objects as tuples of attribute values.
    """
    for a, b in [
        ((2, 1), (1, 2)),
        ((1, 3), (1, 2)),
        ((1, 1), (1, 1)),
        (("b", "a"), ("a", "b")),
        (("a", "b"), ("a", "b")),
    ]:
        assert CmpC(*a) >= CmpC(*b)


def test_ge_unordable(CmpC):
    """
    __ge__ returns NotImplemented if classes differ.
    """
    assert NotImplemented == (CmpC(1, 2).__ge__(42))


def test_hash(CmpC):
    """
    __hash__ returns different hashes for different values.
    """
    assert hash(CmpC(1, 2)) != hash(CmpC(1, 1))


@fixture
def InitC(request, impl):
    class InitC(impl.a.b):
        def __init__(self, *args, **kwargs):
            super(InitC, self).__init__(*args, **kwargs)
            if self.a == self.b:
                raise ValueError

    return InitC


def test_sets_attributes(InitC):
    """
    The attributes are initialized using the passed keywords.
    """
    obj = InitC(a=1, b=2)
    assert 1 == obj.a
    assert 2 == obj.b


def test_custom_init(InitC):
    """
    The class initializer is called too.
    """
    with raises(ValueError):
        InitC(a=1, b=1)


def test_passes_args(InitC):
    """
    All positional parameters are passed to the original initializer.
    """
    class InitWithArg(Fields.a):
        def __init__(self, arg, **kwargs):
            super(InitWithArg, self).__init__(**kwargs)
            self.arg = arg

    obj = InitWithArg(42, a=1)
    assert 42 == obj.arg
    assert 1 == obj.a


def test_missing_arg(InitC):
    """
    Raises `ValueError` if a value isn't passed.
    """
    with raises(TypeError):
        InitC(a=1)


def test_regex_validator():
    class Test(RegexValidate.value['aa+'], Fields.value):
        pass

    raises(ValidationError, Test, 'a')
    raises(ValidationError, Test, '')
    raises(ValidationError, Test, 'bb')

    t = Test('aa')
    assert t.value == 'aa'


def test_regex_validator_rev():
    class Test(Fields.value, RegexValidate.value['aa+']):
        pass

    raises(ValidationError, Test, 'a')
    raises(ValidationError, Test, '')
    raises(ValidationError, Test, 'bb')

    t = Test('aa')
    assert t.value == 'aa'


def test_regex_validator_incompatible_layout():
    def test():
        class Test(RegexValidate.value['aa+'].extra['x'], Fields.value.extar['2'].a[3].b[4].c[5].d[6]):
            pass
    raises(TypeError, test)


def test_regex_validator_incompatible_layout_2():
    def test():
        class Test(RegexValidate.value['aa+'], Fields.other):
            pass
    raises(TypeError, test)


def test_regex_validator_bad_declaration():
    def test():
        class Test(RegexValidate.a.b['aa+']):
            pass
    raises(TypeError, test)


def test_regex_validator_fail_validation():
    class Test(RegexValidate.a['aa+']):
        pass
    raises(ValidationError, Test, 'a')


def test_regex_validator_rev_incompatible_layout(impl):
    def test():
        class Test(impl.value, RegexValidate.balue['aa+']):
            pass
    raises(TypeError, test)


def test_init_default_args_as_positional_args(impl):
    class MyContainer(impl.a.b[2].c[3]):
        pass

    assert repr(MyContainer(0, 1, 2)) == 'MyContainer(a=0, b=1, c=2)'


def test_init_default_args_as_positional_misaligned(impl):
    class MyContainer(impl.a.b[2].c[3]):
        pass

    raises(TypeError, MyContainer, 0, 1, b=2)


def test_init_default_args_as_positional_partial(impl):
    class MyContainer(impl.a.b[2].c[3]):
        pass

    assert repr(MyContainer(0, 1, c=2)) == 'MyContainer(a=0, b=1, c=2)'


def test_init_unknown_kwargs(impl):
    class MyContainer(impl.a.b[2].c[3]):
        pass

    raises(TypeError, MyContainer, 0, 1, x=2)


def test_init_too_many_positional(impl):
    class MyContainer(impl.a.b[2].c[3]):
        pass
    raises(TypeError, MyContainer, 0, 1, 2, 3)


def test_convertible():
    class TestContainer(ConvertibleFields.a.b):
        pass

    assert TestContainer(1, 2).as_dict == dict(a=1, b=2)


def test_convertible_mixin():
    class TestContainer(BareFields.a.b.c, ConvertibleMixin.a.b):
        pass

    assert TestContainer(1, 2, 3).as_tuple == (1, 2)


def test_bad_make_init_func():
    exc = raises(ValueError, make_init_func, ['a', 'b', 'c'], {'b': 1})
    assert exc.value.args == ("Cannot have positional fields after fields with defaults."
                              " Field 'c' is missing a default value!",)


def test_multiple_inheritance():
    class A(InheritableFields.name):
        pass

    class B(InheritableFields.age):
        pass

    class Person(A, B):
        pass

    Person(name='hans', age='43')
    raises(TypeError, Person, name='hans', age='43', bogus='crappo')


1			from __future__ import print_function
2
3			import pickle
4			try:
5			import cPickle
6			except ImportError:
7			import pickle as cPickle
8			from functools import partial
9			from itertools import chain
10
11			from pytest import fixture
12			from pytest import raises
13
14			from fields import BareFields, make_init_func, InheritableFields
15			from fields import ComparableMixin
16			from fields import ConvertibleFields
17			from fields import ConvertibleMixin
18			from fields import Fields
19			from fields import PrintableMixin
20			from fields import SlotsFields
21			from fields import Tuple
22			from fields.extras import RegexValidate
23			from fields.extras import ValidationError
24
25
26			@fixture(params=[
27			partial(pickle.dumps, protocol=i)
28			for i in range(pickle.HIGHEST_PROTOCOL)
29			] + [
30			partial(cPickle.dumps, protocol=i)
31			for i in range(cPickle.HIGHEST_PROTOCOL)
32			])
33			def pickler(request):
34			return request.param
35
36
37			@fixture(params=[pickle.loads, cPickle.loads])
38			def unpickler(request):
39			return request.param
40
41
42			@fixture(params=[Fields, SlotsFields])
43			def impl(request):
44			print(request.param)
45			return request.param
46
47
48			class G1(Tuple.a.b):
49			pass
50
51
52			class G2(Fields.a.b[1].c[2]):
53			pass
54
55
56			class G3(Fields.a.b[1].c[2]):
57			pass
58
59
60			def test_slots_class_has_slots():
61			class Slots(SlotsFields.a.b[1]):
62			pass
63
64			i = Slots(0)
65			i.a = 1
66			assert Slots.__slots__ == ['a', 'b']
67			assert i.a == 1
68			assert not hasattr(i, "__dict__")
69			raises(AttributeError, setattr, i, "bogus", 1)
70			raises(AttributeError, getattr, i, "bogus")
71
72
73			def test_slots_class_customizable_slots():
74			class Slots(SlotsFields.a.b[1]):
75			__slots__ = ["a", "b", "foo", "bar"]
76
77			i = Slots(0)
78			i.a = 1
79			assert Slots.__slots__ == ["a", "b", "foo", "bar"]
80			assert i.a == 1
81			assert not hasattr(i, "__dict__")
82			i.foo = 2
83			assert i.foo == 2
84			i.bar = 3
85			assert i.bar == 3
86			raises(AttributeError, setattr, i, "bogus", 1)
87			raises(AttributeError, getattr, i, "bogus")
88
89
90			def test_defaults_on_tuples(impl):
91			class Ok(impl.a.b['def']):
92			pass
93			assert Ok(1).b == 'def'
94			assert Ok(1, 2).b == 2
95
96
97			def test_required_after_defaults(impl):
98			def test():
99			class Fail(impl.a['def'].b):
100			pass
101
102			raises(TypeError, test)
103
104
105			def test_extra_args(impl):
106			raises(TypeError, impl.a.b, 1, 2, 3)
107
108
109			def test_comparable():
110			class C(ComparableMixin.a):
111			pass
112
113			raises(TypeError, C, 1, 2, 3)
114
115			class D(BareFields.a.b.c, ComparableMixin.a):
116			pass
117
118			assert D(1, 2, 3) == D(1, 3, 4)
119			assert D(1, 2, 3) != D(2, 2, 3)
120
121
122			def test_printable():
123			class D(BareFields.a.b.c, PrintableMixin.a.b):
124			pass
125
126			assert str(D(1, 2, 3)) == "D(a=1, b=2)"
127
128
129			def test_extra_args_2(impl):
130			class X1(impl.a.b):
131			pass
132
133			raises(TypeError, X1, 1, 2, 3)
134
135
136			def test_missing_args(impl):
137			raises(TypeError, impl.a.b, 1)
138
139
140			def test_missing_args_2(impl):
141			class X1(impl.a.b):
142			pass
143
144			raises(TypeError, X1, 1)
145
146
147			def test_already_specified(impl):
148			raises(TypeError, lambda: impl.a[1].a)
149
150
151			def test_already_specified_2(impl):
152			raises(TypeError, lambda: impl.a.a)
153
154
155			def test_already_specified_3(impl):
156			raises(TypeError, lambda: impl.a.a[2])
157
158
159			def test_already_specified_4(impl):
160			raises(TypeError, lambda: impl.a.b.a)
161
162
163			def test_no_field(impl):
164			raises(TypeError, lambda: impl[123])
165
166
167			def test_tuple_pickle(pickler, unpickler):
168			g = G1(1, 2)
169			assert unpickler(pickler(g)) == g
170
171
172			def test_class_pickle(pickler, unpickler):
173			g = G2(1, c=0)
174			assert unpickler(pickler(g)) == g
175
176
177			def test_slots_class_pickle(pickler, unpickler):
178			g = G3(1, c=0)
179			assert unpickler(pickler(g)) == g
180
181
182			def test_tuple_factory():
183			class Z1(Tuple.a.b):
184			pass
185
186			t = Z1(1, 2)
187			assert repr(t) == "Z1(a=1, b=2)"
188
189
190			def test_nosubclass(impl):
191			T1 = impl.a.b.c[1].d[2]
192
193			t = T1(1, 2)
194			assert repr(t) == "FieldsBase(a=1, b=2, c=1, d=2)"
195
196
197			def test_factory(impl):
198			class T1(impl.a.b.c[1].d[2]):
199			pass
200
201			t = T1(1, 2)
202			assert repr(t) == "T1(a=1, b=2, c=1, d=2)"
203
204
205			def test_factory_all_defaults(impl):
206			class T2(impl.a[0].b[1].c[2].d[3]):
207			pass
208
209			t = T2()
210			assert repr(t) == "T2(a=0, b=1, c=2, d=3)"
211
212
213			def test_factory_no_required_after_defaults(impl):
214			raises(TypeError, getattr, impl.a[0].b, 'c')
215
216
217			def test_factory_no_required_after_defaults_2(impl):
218			raises(TypeError, type, 'Broken', (impl.a[0].b,), {})
219
220
221			def test_factory_t3(impl):
222			class T3(impl.a):
223			pass
224
225			t = T3(1)
226			assert repr(t) == "T3(a=1)"
227
228
229			def test_factory_empty_raise(impl):
230			raises(TypeError, type, "T5", (impl,), {})
231
232
233			@fixture
234			def CmpC(request, impl):
235			class CmpC(impl.a.b):
236			pass
237
238			return CmpC
239
240
241			def test_equal(CmpC):
242			"""
243			Equal objects are detected as equal.
244			"""
245			assert CmpC(1, 2) == CmpC(1, 2)
246			assert not (CmpC(1, 2) != CmpC(1, 2))
247
248
249			def test_unequal_same_class(CmpC):
250			"""
251			Unequal objects of correct type are detected as unequal.
252			"""
253			assert CmpC(1, 2) != CmpC(2, 1)
254			assert not (CmpC(1, 2) == CmpC(2, 1))
255
256
257			def test_unequal_different_class(CmpC):
258			"""
259			Unequal objects of differnt type are detected even if their attributes
260			match.
261			"""
262			class NotCmpC(object):
263			a = 1
264			b = 2
265			assert CmpC(1, 2) != NotCmpC()
266			assert not (CmpC(1, 2) == NotCmpC())
267
268
269			def test_lt(CmpC):
			0 ignored issues – show Duplication introduced 2015-11-27 13:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
270			"""
271			__lt__ compares objects as tuples of attribute values.
272			"""
273			for a, b in [
274			((1, 2), (2, 1)),
275			((1, 2), (1, 3)),
276			(("a", "b"), ("b", "a")),
277			]:
278			assert CmpC(a) < CmpC(b)
279
280
281			def test_lt_unordable(CmpC):
282			"""
283			__lt__ returns NotImplemented if classes differ.
284			"""
285			assert NotImplemented == (CmpC(1, 2).__lt__(42))
286
287
288			def test_le(CmpC):
			0 ignored issues – show Duplication introduced 2015-11-27 13:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
289			"""
290			__le__ compares objects as tuples of attribute values.
291			"""
292			for a, b in [
293			((1, 2), (2, 1)),
294			((1, 2), (1, 3)),
295			((1, 1), (1, 1)),
296			(("a", "b"), ("b", "a")),
297			(("a", "b"), ("a", "b")),
298			]:
299			assert CmpC(a) <= CmpC(b)
300
301
302			def test_le_unordable(CmpC):
303			"""
304			__le__ returns NotImplemented if classes differ.
305			"""
306			assert NotImplemented == (CmpC(1, 2).__le__(42))
307
308
309			def test_gt(CmpC):
			0 ignored issues – show Duplication introduced 2015-11-27 13:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
310			"""
311			__gt__ compares objects as tuples of attribute values.
312			"""
313			for a, b in [
314			((2, 1), (1, 2)),
315			((1, 3), (1, 2)),
316			(("b", "a"), ("a", "b")),
317			]:
318			assert CmpC(a) > CmpC(b)
319
320
321			def test_gt_unordable(CmpC):
322			"""
323			__gt__ returns NotImplemented if classes differ.
324			"""
325			assert NotImplemented == (CmpC(1, 2).__gt__(42))
326
327
328			def test_ne_unordable(CmpC):
329			"""
330			__gt__ returns NotImplemented if classes differ.
331			"""
332			assert NotImplemented == (CmpC(1, 2).__ne__(42))
333
334
335			def test_ge(CmpC):
			0 ignored issues – show Duplication introduced 2015-11-27 13:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
336			"""
337			__ge__ compares objects as tuples of attribute values.
338			"""
339			for a, b in [
340			((2, 1), (1, 2)),
341			((1, 3), (1, 2)),
342			((1, 1), (1, 1)),
343			(("b", "a"), ("a", "b")),
344			(("a", "b"), ("a", "b")),
345			]:
346			assert CmpC(a) >= CmpC(b)
347
348
349			def test_ge_unordable(CmpC):
350			"""
351			__ge__ returns NotImplemented if classes differ.
352			"""
353			assert NotImplemented == (CmpC(1, 2).__ge__(42))
354
355
356			def test_hash(CmpC):
357			"""
358			__hash__ returns different hashes for different values.
359			"""
360			assert hash(CmpC(1, 2)) != hash(CmpC(1, 1))
361
362
363			@fixture
364			def InitC(request, impl):
365			class InitC(impl.a.b):
366			def __init__(self, args, *kwargs):
367			super(InitC, self).__init__(args, *kwargs)
368			if self.a == self.b:
369			raise ValueError
370
371			return InitC
372
373
374			def test_sets_attributes(InitC):
375			"""
376			The attributes are initialized using the passed keywords.
377			"""
378			obj = InitC(a=1, b=2)
379			assert 1 == obj.a
380			assert 2 == obj.b
381
382
383			def test_custom_init(InitC):
384			"""
385			The class initializer is called too.
386			"""
387			with raises(ValueError):
388			InitC(a=1, b=1)
389
390
391			def test_passes_args(InitC):
392			"""
393			All positional parameters are passed to the original initializer.
394			"""
395			class InitWithArg(Fields.a):
396			def __init__(self, arg, **kwargs):
397			super(InitWithArg, self).__init__(**kwargs)
398			self.arg = arg
399
400			obj = InitWithArg(42, a=1)
401			assert 42 == obj.arg
402			assert 1 == obj.a
403
404
405			def test_missing_arg(InitC):
406			"""
407			Raises `ValueError` if a value isn't passed.
408			"""
409			with raises(TypeError):
410			InitC(a=1)
411
412
413			def test_regex_validator():
414			class Test(RegexValidate.value['aa+'], Fields.value):
415			pass
416
417			raises(ValidationError, Test, 'a')
418			raises(ValidationError, Test, '')
419			raises(ValidationError, Test, 'bb')
420
421			t = Test('aa')
422			assert t.value == 'aa'
423
424
425			def test_regex_validator_rev():
426			class Test(Fields.value, RegexValidate.value['aa+']):
427			pass
428
429			raises(ValidationError, Test, 'a')
430			raises(ValidationError, Test, '')
431			raises(ValidationError, Test, 'bb')
432
433			t = Test('aa')
434			assert t.value == 'aa'
435
436
437			def test_regex_validator_incompatible_layout():
438			def test():
439			class Test(RegexValidate.value['aa+'].extra['x'], Fields.value.extar['2'].a[3].b[4].c[5].d[6]):
440			pass
441			raises(TypeError, test)
442
443
444			def test_regex_validator_incompatible_layout_2():
445			def test():
446			class Test(RegexValidate.value['aa+'], Fields.other):
447			pass
448			raises(TypeError, test)
449
450
451			def test_regex_validator_bad_declaration():
452			def test():
453			class Test(RegexValidate.a.b['aa+']):
454			pass
455			raises(TypeError, test)
456
457
458			def test_regex_validator_fail_validation():
459			class Test(RegexValidate.a['aa+']):
460			pass
461			raises(ValidationError, Test, 'a')
462
463
464			def test_regex_validator_rev_incompatible_layout(impl):
465			def test():
466			class Test(impl.value, RegexValidate.balue['aa+']):
467			pass
468			raises(TypeError, test)
469
470
471			def test_init_default_args_as_positional_args(impl):
472			class MyContainer(impl.a.b[2].c[3]):
473			pass
474
475			assert repr(MyContainer(0, 1, 2)) == 'MyContainer(a=0, b=1, c=2)'
476
477
478			def test_init_default_args_as_positional_misaligned(impl):
479			class MyContainer(impl.a.b[2].c[3]):
480			pass
481
482			raises(TypeError, MyContainer, 0, 1, b=2)
483
484
485			def test_init_default_args_as_positional_partial(impl):
486			class MyContainer(impl.a.b[2].c[3]):
487			pass
488
489			assert repr(MyContainer(0, 1, c=2)) == 'MyContainer(a=0, b=1, c=2)'
490
491
492			def test_init_unknown_kwargs(impl):
493			class MyContainer(impl.a.b[2].c[3]):
494			pass
495
496			raises(TypeError, MyContainer, 0, 1, x=2)
497
498
499			def test_init_too_many_positional(impl):
500			class MyContainer(impl.a.b[2].c[3]):
501			pass
502			raises(TypeError, MyContainer, 0, 1, 2, 3)
503
504
505			def test_convertible():
506			class TestContainer(ConvertibleFields.a.b):
507			pass
508
509			assert TestContainer(1, 2).as_dict == dict(a=1, b=2)
510
511
512			def test_convertible_mixin():
513			class TestContainer(BareFields.a.b.c, ConvertibleMixin.a.b):
514			pass
515
516			assert TestContainer(1, 2, 3).as_tuple == (1, 2)
517
518
519			def test_bad_make_init_func():
520			exc = raises(ValueError, make_init_func, ['a', 'b', 'c'], {'b': 1})
521			assert exc.value.args == ("Cannot have positional fields after fields with defaults."
522			" Field 'c' is missing a default value!",)
523
524
525			def test_multiple_inheritance():
526			class A(InheritableFields.name):
527			pass
528
529			class B(InheritableFields.age):
530			pass
531
532			class Person(A, B):
533			pass
534
535			Person(name='hans', age='43')
536			raises(TypeError, Person, name='hans', age='43', bogus='crappo')
537

ionelmc / python-fields

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