def testProvides(self):
"""
Tests the @Provides decorator
"""
class DummyClass(object):
pass
def method():
pass
# Empty specification
for empty in (None, "", " "):
self.assertRaises(ValueError, decorators.Provides, empty)
# No error should be raised
log_off()
decorators.Provides("spec", empty)
log_on()
# Field name with a space
self.assertRaises(ValueError, decorators.Provides, "spec", "a space")
# Invalid specification type
for invalid in ([1, 2, 3], tuple((1, 2, 3)), 123):
self.assertRaises(ValueError, decorators.Provides, invalid)
self.assertRaises(ValueError, decorators.Provides, "spec", invalid)
# Invalid target
for invalid in (None, method, 123):
self.assertRaises(TypeError, decorators.Provides("spec", "field"),
invalid)
def test_provides_factory(self):
"""
Tests the @Provides decorator for a service factory
"""
class DummyClass(object):
pass
def invalid_method(self, foo):
pass
def valid_method(self, bundle, svc_reg):
pass
# Missing method in class
self.assertRaises(
TypeError, decorators.Provides("spec", factory=True), DummyClass)
# One of two methods
DummyClass.get_service = valid_method
self.assertRaises(
TypeError, decorators.Provides("spec", factory=True), DummyClass)
# Both methods
DummyClass.unget_service = valid_method
try:
decorators.Provides("spec", factory=True)(DummyClass)
except TypeError:
self.fail("Error on valid class")
# Invalid arity
DummyClass.get_service = invalid_method
self.assertRaises(
TypeError, decorators.Provides("spec", factory=True), DummyClass)
def test_provides_prototype(self):
"""
Tests the @Provides decorator for a prototype service factory
"""
class DummyClass(object):
pass
def invalid_method(self, foo):
pass
def valid_method(self, bundle, svc_reg):
pass
def valid_instance_method(self, bundle, svc_reg, svc):
pass
# Missing method in class
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
# One of three methods
DummyClass.get_service = valid_method
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
# Two of three methods
DummyClass.unget_service = valid_method
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
# Two (other) of three methods
del DummyClass.unget_service
DummyClass.unget_service_instance = valid_instance_method
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
# All methods
DummyClass.unget_service = valid_method
try:
decorators.Provides("spec", prototype=True)(DummyClass)
except TypeError:
self.fail("Error on valid class")
# Invalid arity
DummyClass.get_service = invalid_method
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
DummyClass.get_service = valid_method
DummyClass.unget_service_instance = invalid_method
self.assertRaises(
TypeError, decorators.Provides("spec", prototype=True), DummyClass)
def testProvides(self):
"""
Tests the @Provides decorator
"""
class DummyClass(object):
pass
def method():
pass
# Field name with a space
self.assertRaises(ValueError, decorators.Provides, "spec", "a space")
# Invalid specification type
for invalid in ([1, 2, 3], tuple((1, 2, 3)), 123):
self.assertRaises(ValueError, decorators.Provides, "spec", invalid)
# Invalid target
for invalid in (None, method, 123):
self.assertRaises(TypeError, decorators.Provides("spec", "field"),
invalid)