self.one = one
class Container(Injector):
class SubContainer(Injector):
foo = Foo
one = 1
foo = this.SubContainer.foo.one
assert Container.foo == 1
# Item access.
item_access = CodeCollector()
@item_access.parametrize
def test_item_getter(code):
"""We can describe item access in the `Injector` in the declarative
manner."""
result = code()
assert result == 1
@item_access
def ce642f492941():
"""Get item with string key."""
"""Tests related to Injector classes written inside other Injector classes."""
from dependencies import Injector
from dependencies import Package
from dependencies import this
from helpers import CodeCollector
parent_attr = CodeCollector()
subcontainer = CodeCollector("sub")
@parent_attr.parametrize
@subcontainer.parametrize
def test_attribute_getter_parent_access(code, sub):
"""We can access attribute of outer container."""
Container = code(sub())
assert Container.SubContainer.bar == 1
@parent_attr
def _ac7814095628(sub):
class Container(Injector):
foo = 1
SubContainer = sub
return Container
@parent_attr
def _f607abc82079(sub):
return Injector(foo=1, SubContainer=sub)
# -*- coding: utf-8 -*-
"""Tests related to the circle detection in the injector definitions."""
import pytest
from dependencies import Injector
from dependencies import operation
from dependencies import Package
from dependencies import value
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
# Simple circle.
circle_deps = CodeCollector()
circle_defs = CodeCollector("foo")
@circle_deps.parametrize
@circle_defs.parametrize
def test_circle_dependencies(code, foo):
"""Throw `DependencyError` if class needs a dependency named same as class.
`Summator.foo` will fail with maximum recursion depth.
So we need to raise exception before this attribute access.
"""
with pytest.raises(DependencyError) as exc_info:
code(foo())
message = str(exc_info.value)
"""Tests related to descriptor objects."""
import pytest
from dependencies import Injector
from dependencies import Package
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
deny_descriptors = CodeCollector()
define_descriptors = CodeCollector("foo")
@deny_descriptors.parametrize
@define_descriptors.parametrize
def test_deny_descriptors(code, foo):
"""Descriptors passed to the injector have confusing expectations.
If users pass method descriptor to the injector, they probably expect access to the
Injector itself.
"""
with pytest.raises(DependencyError) as exc_info:
code(foo())
expected = """
Attribute 'foo' contains descriptor.
Descriptors usage will be confusing inside Injector subclasses.
Use @value decorator instead, if you really need inject descriptor instance somewhere.
""".strip()
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
def test_protect_against_classes():
"""Deny to decorate classes with @value proxy."""
with pytest.raises(DependencyError) as exc_info:
@value
class Foo:
pass # pragma: no cover
assert str(exc_info.value) == "'value' decorator can not be used on classes"
deny_method = CodeCollector()
@deny_method.parametrize
def test_protect_against_self(code):
"""Deny to define a value with argument called `self`."""
@value
def method(self, foo, bar):
pass # pragma: no cover
with pytest.raises(DependencyError) as exc_info:
code(method)
assert str(exc_info.value) == "'value' decorator can not be used on methods"
def test_keyword_arguments():
class Container(Injector):
foo = 1
bar = 2
@value
def result(foo, bar, baz=3):
return foo + bar + baz
assert Container.result == 6
deny_method = CodeCollector()
@deny_method.parametrize
def test_protect_against_self(code):
"""Deny to define a value with argument called `self`."""
@value
def method(self, foo, bar):
pass # pragma: no cover
with pytest.raises(DependencyError) as exc_info:
code(method)
assert str(exc_info.value) == "'value' decorator can not be used on methods"
# -*- coding: utf-8 -*-
"""Tests related to the loops detection in the injector definition."""
import pytest
from dependencies import Injector
from dependencies import Package
from dependencies import this
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
# Flat injector.
flat_injector = CodeCollector()
@flat_injector.parametrize
def test_circle_links(code):
"""We can detect link loops in the same container without hierarchy."""
with pytest.raises(DependencyError) as exc_info:
code()
assert str(exc_info.value) in {
"'foo' is a circle link in the 'Container' injector",
"'foo' is a circle link in the 'Injector' injector",
"'bar' is a circle link in the 'Container' injector",
"'bar' is a circle link in the 'Injector' injector",
"'baz' is a circle link in the 'Container' injector",
"'baz' is a circle link in the 'Injector' injector",
}
"""Tests related to the Package object."""
import inspect
import pytest
from dependencies import Injector
from dependencies import Package
from helpers import CodeCollector
package_definitions = CodeCollector()
@package_definitions.parametrize
def test_provide_module(code):
"""Package instance itself should refer to the module."""
Container = code()
assert inspect.ismodule(Container.itself)
assert inspect.ismodule(Container.submodule)
@package_definitions.parametrize
def test_provide_an_instance(code):
"""Package attribute access should provide an instance when refer to a class."""
Container = code()
from examples.submodule import Foo, Bar
assert isinstance(Container.instance, Foo) or isinstance(
Container.instance, Bar)
assert hasattr(Container.instance, "do")
assert "x" in dir(Foo.let(x=1))
def test_omit_parent_link_in_dir_listing():
"""
Don't show `__parent__` link in the `dir` output. It is an
implementation detail.
"""
class Foo(Injector):
class Bar(Injector):
pass
assert "__parent__" not in dir(Foo.Bar)
attribute_assignment = CodeCollector()
@attribute_assignment.parametrize
def test_deny_injector_changes(code):
"""Explicitly deny change of any kind on `Injector` and its subclasses."""
with pytest.raises(DependencyError) as exc_info:
code()
assert str(exc_info.value) == "'Injector' modification is not allowed"
@attribute_assignment
def mvT9oyJdXhzh():
"""Attribute assignment."""
from dependencies import Injector
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
@unique
class Choices(Enum):
"""Enumeration class."""
one = auto()
two = auto()
three = auto()
deny_enums = CodeCollector()
@deny_enums.parametrize
def test_deny_enums(code):
"""Deny inject enum classes.
We should suggest to inject a specific enum member instead.
"""
with pytest.raises(DependencyError) as exc_info:
code()
expected = """
Attribute 'foo' contains Enum.
"""Tests related to injectable objects."""
import pytest
from dependencies import Injector
from dependencies import value
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
deny_varargs = CodeCollector()
varargs_defs = CodeCollector("foo")
@deny_varargs.parametrize
@varargs_defs.parametrize
def test_deny_arbitrary_argument_list(code, foo):
"""Raise `DependencyError` if constructor have *args argument."""
with pytest.raises(DependencyError) as exc_info:
code(foo())
message = str(exc_info.value)
assert message in {
"'Foo.__init__' have variable-length positional arguments",
"'func' have variable-length positional arguments",
}
@deny_varargs
def _dfe1c22c641e(Foo):
class Container(Injector):
foo = Foo
args = (1, 2, 3)
app.tasks.clear()
return app
class Run(object):
def __init__(self, args, kwargs):
self.args = args
self.kwargs = kwargs
def __call__(self):
assert self.args == ("foo",)
assert self.kwargs == {"bar": "baz"}
return 1
containers = CodeCollector()
@containers
def bAMWkT3WSTN1(_app):
"""Task decorator."""
@contrib.task
class Container(Injector):
app = _app
name = "foo.bar.baz"
run = Run
return Container
def __init__(self, one):
self.one = one
class Container(Injector):
class SubContainer(Injector):
foo = Foo
one = 1
foo = this.SubContainer.foo.one
assert Container.foo == 1
parent_attr = CodeCollector()
@parent_attr.parametrize
def test_attribute_getter_parent_access(code):
"""We can access attribute of outer container."""
Container = code()
assert Container.SubContainer.bar == 1
@parent_attr
def ac7814095628():
"""Declarative injector."""
class Container(Injector):
def test_omit_parent_link_in_dir_listing():
"""Don't show `__parent__` link in the `dir` output.
It is an implementation detail.
"""
class Foo(Injector):
class Bar(Injector):
x = 1
assert "__parent__" not in dir(Foo.Bar)
attribute_assignment = CodeCollector()
@attribute_assignment.parametrize
def test_deny_injector_changes(code):
"""Explicitly deny change of any kind on `Injector` and its subclasses."""
with pytest.raises(DependencyError) as exc_info:
code()
assert str(exc_info.value) == "'Injector' modification is not allowed"
@attribute_assignment
def _mvT9oyJdXhzh():
class Container(Injector):
x = 1
"""Tests related to the Injector subclasses checks."""
import pytest
from dependencies import Injector
from dependencies.exceptions import DependencyError
from helpers import CodeCollector
subclasses_only = CodeCollector()
@subclasses_only.parametrize
def test_multiple_inheritance_deny_regular_classes(code):
"""Only `Injector` subclasses are allowed to be used in the inheritance."""
class Foo:
pass
with pytest.raises(DependencyError) as exc_info:
code(Foo)
message = str(exc_info.value)
assert message == "Multiple inheritance is allowed for Injector subclasses only"
@subclasses_only
def _f1583394f1a6(Foo):
class Bar(Injector, Foo):
pass
@subclasses_only
def _b51814725d07(Foo):
import inspect
import pytest
from dependencies import Injector, Package
from helpers import CodeCollector
package_definitions = CodeCollector()
@package_definitions.parametrize
def test_provide_module(code):
"""Package instance itself should refer to the module."""
Container = code()
assert inspect.ismodule(Container.itself)
assert inspect.ismodule(Container.submodule)
@package_definitions.parametrize
def test_provide_an_instance(code):
"""
Package instance attribute access should provide injectable spec
when refer to a class.
"""
Container = code()
from pkg.submodule import Foo, Bar
assert isinstance(Container.instance, Foo) or isinstance(Container.instance, Bar)
