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Add additional unittests for full validation of Singleton provider

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This commit is contained in:
Roman Mogilatov 2015-10-19 15:20:25 +03:00
parent b61e3ee007
commit 9b4a7bd28c
2 changed files with 246 additions and 57 deletions
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5
dependency_injector/providers.py
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@ -175,6 +175,11 @@ class Singleton(Provider):
"""Reset instance."""
self.instance = None
@property
def injections(self):
"""Return tuple of all injections."""
return self.factory.injections
class ExternalDependency(Provider):
"""External dependency provider.

298
tests/test_providers.py
View File

@ -4,6 +4,34 @@ import unittest2 as unittest
import dependency_injector as di
class Example(object):
"""Example class for Factory provider tests."""
def __init__(self, init_arg1=None, init_arg2=None):
"""Initializer.
:param init_arg1:
:param init_arg2:
:return:
"""
self.init_arg1 = init_arg1
self.init_arg2 = init_arg2
self.attribute1 = None
self.attribute2 = None
self.method1_value = None
self.method2_value = None
def method1(self, value):
"""Setter method 1."""
self.method1_value = value
def method2(self, value):
"""Setter method 2."""
self.method2_value = value
class ProviderTests(unittest.TestCase):
"""Provider test cases."""
@ -132,36 +160,9 @@ class DelegateTests(unittest.TestCase):
class FactoryTests(unittest.TestCase):
"""Factory test cases."""
class Example(object):
"""Example class for Factory provider tests."""
def __init__(self, init_arg1=None, init_arg2=None):
"""Initializer.
:param init_arg1:
:param init_arg2:
:return:
"""
self.init_arg1 = init_arg1
self.init_arg2 = init_arg2
self.attribute1 = None
self.attribute2 = None
self.method1_value = None
self.method2_value = None
def method1(self, value):
"""Setter method 1."""
self.method1_value = value
def method2(self, value):
"""Setter method 2."""
self.method2_value = value
def test_is_provider(self):
"""Test `is_provider` check."""
self.assertTrue(di.is_provider(di.Factory(self.Example)))
self.assertTrue(di.is_provider(di.Factory(Example)))
def test_init_with_callable(self):
"""Test creation of provider with a callable."""
@ -173,20 +174,20 @@ class FactoryTests(unittest.TestCase):
def test_call(self):
"""Test creation of new instances."""
provider = di.Factory(self.Example)
provider = di.Factory(Example)
instance1 = provider()
instance2 = provider()
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_args(self):
"""Test creation of new instances with init positional args.
New simplified syntax.
"""
provider = di.Factory(self.Example, 'i1', 'i2')
provider = di.Factory(Example, 'i1', 'i2')
instance1 = provider()
instance2 = provider()
@ -198,15 +199,15 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_keyword_args(self):
"""Test creation of new instances with init keyword args.
New simplified syntax.
"""
provider = di.Factory(self.Example, init_arg1='i1', init_arg2='i2')
provider = di.Factory(Example, init_arg1='i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
@ -218,15 +219,15 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_and_keyword_args(self):
"""Test creation of new instances with init positional and keyword args.
Simplified syntax of positional and keyword arg injections.
"""
provider = di.Factory(self.Example,'i1', init_arg2='i2')
provider = di.Factory(Example, 'i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
@ -238,15 +239,15 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_and_keyword_args_extended_syntax(self):
"""Test creation of new instances with init positional and keyword args.
Extended syntax of positional and keyword arg injections.
"""
provider = di.Factory(self.Example,
provider = di.Factory(Example,
di.Arg('i1'),
di.KwArg('init_arg2', 'i2'))
@ -260,12 +261,12 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_attributes(self):
"""Test creation of new instances with attribute injections."""
provider = di.Factory(self.Example,
provider = di.Factory(Example,
di.Attribute('attribute1', 'a1'),
di.Attribute('attribute2', 'a2'))
@ -279,12 +280,12 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.attribute2, 'a2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_methods(self):
"""Test creation of new instances with method injections."""
provider = di.Factory(self.Example,
provider = di.Factory(Example,
di.Method('method1', 'm1'),
di.Method('method2', 'm2'))
@ -298,12 +299,12 @@ class FactoryTests(unittest.TestCase):
self.assertEqual(instance2.method2_value, 'm2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, self.Example)
self.assertIsInstance(instance2, self.Example)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_context_args(self):
"""Test creation of new instances with context args."""
provider = di.Factory(self.Example)
provider = di.Factory(Example)
instance = provider(11, 22)
self.assertEqual(instance.init_arg1, 11)
@ -311,7 +312,7 @@ class FactoryTests(unittest.TestCase):
def test_call_with_context_kwargs(self):
"""Test creation of new instances with context kwargs."""
provider = di.Factory(self.Example,
provider = di.Factory(Example,
di.KwArg('init_arg1', 1))
instance1 = provider(init_arg2=22)
@ -324,7 +325,7 @@ class FactoryTests(unittest.TestCase):
def test_call_overridden(self):
"""Test creation of new instances on overridden provider."""
provider = di.Factory(self.Example)
provider = di.Factory(Example)
overriding_provider1 = di.Factory(dict)
overriding_provider2 = di.Factory(list)
@ -339,8 +340,8 @@ class FactoryTests(unittest.TestCase):
self.assertIsInstance(instance2, list)
def test_injections(self):
"""Test getting a full list of injections using Factory.injections."""
provider = di.Factory(self.Example,
"""Test getting a full list of injections using injections property."""
provider = di.Factory(Example,
di.Arg(1),
di.KwArg('init_arg2', 2),
di.Attribute('attribute1', 3),
@ -356,16 +357,199 @@ class FactoryTests(unittest.TestCase):
class SingletonTests(unittest.TestCase):
"""Singleton test cases."""
def test_is_provider(self):
"""Test `is_provider` check."""
self.assertTrue(di.is_provider(di.Singleton(Example)))
def test_init_with_callable(self):
"""Test creation of provider with a callable."""
self.assertTrue(di.Singleton(credits))
def test_init_with_not_callable(self):
"""Test creation of provider with not a callable."""
self.assertRaises(di.Error, di.Singleton, 123)
def test_call(self):
"""Test creation and returning of single object."""
provider = di.Singleton(object)
"""Test getting of instances."""
provider = di.Singleton(Example)
instance1 = provider()
instance2 = provider()
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_args(self):
"""Test getting of instances with init positional args.
New simplified syntax.
"""
provider = di.Singleton(Example, 'i1', 'i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_keyword_args(self):
"""Test getting of instances with init keyword args.
New simplified syntax.
"""
provider = di.Singleton(Example, init_arg1='i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_and_keyword_args(self):
"""Test getting of instances with init positional and keyword args.
Simplified syntax of positional and keyword arg injections.
"""
provider = di.Singleton(Example, 'i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_and_keyword_args_extended_syntax(self):
"""Test getting of instances with init positional and keyword args.
Extended syntax of positional and keyword arg injections.
"""
provider = di.Singleton(Example,
di.Arg('i1'),
di.KwArg('init_arg2', 'i2'))
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_attributes(self):
"""Test getting of instances with attribute injections."""
provider = di.Singleton(Example,
di.Attribute('attribute1', 'a1'),
di.Attribute('attribute2', 'a2'))
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.attribute1, 'a1')
self.assertEqual(instance1.attribute2, 'a2')
self.assertEqual(instance2.attribute1, 'a1')
self.assertEqual(instance2.attribute2, 'a2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_methods(self):
"""Test getting of instances with method injections."""
provider = di.Singleton(Example,
di.Method('method1', 'm1'),
di.Method('method2', 'm2'))
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.method1_value, 'm1')
self.assertEqual(instance1.method2_value, 'm2')
self.assertEqual(instance2.method1_value, 'm1')
self.assertEqual(instance2.method2_value, 'm2')
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_context_args(self):
"""Test getting of instances with context args."""
provider = di.Singleton(Example)
instance = provider(11, 22)
self.assertEqual(instance.init_arg1, 11)
self.assertEqual(instance.init_arg2, 22)
def test_call_with_context_kwargs(self):
"""Test getting of instances with context kwargs."""
provider = di.Singleton(Example,
di.KwArg('init_arg1', 1))
instance1 = provider(init_arg2=22)
self.assertEqual(instance1.init_arg1, 1)
self.assertEqual(instance1.init_arg2, 22)
# Instance is created earlier
instance1 = provider(init_arg1=11, init_arg2=22)
self.assertEqual(instance1.init_arg1, 1)
self.assertEqual(instance1.init_arg2, 22)
def test_call_overridden(self):
"""Test getting of instances on overridden provider."""
provider = di.Singleton(Example)
overriding_provider1 = di.Singleton(dict)
overriding_provider2 = di.Singleton(object)
provider.override(overriding_provider1)
provider.override(overriding_provider2)
instance1 = provider()
instance2 = provider()
self.assertIs(instance1, instance2)
self.assertIsInstance(instance1, object)
self.assertIsInstance(instance2, object)
self.assertIs(instance1, instance2)
def test_injections(self):
"""Test getting a full list of injections using injections property."""
provider = di.Singleton(Example,
di.Arg(1),
di.KwArg('init_arg2', 2),
di.Attribute('attribute1', 3),
di.Attribute('attribute2', 4),
di.Method('method1', 5),
di.Method('method2', 6))
injections = provider.injections
self.assertEquals(len(injections), 6)
def test_reset(self):
"""Test creation and reset of single object."""