def test_find_operation_unknown_operation(self):
"""
Tests find_operation returns None when the operation name is not
registered
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.assertIsNone(Image.find_operation('test2'))
def test_find_operation_unknown_operation(self):
"""
Tests find_operation returns None when the operation name is not
registered
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.assertIsNone(Image.find_operation('test2'))
def test_find_operation(self):
"""
Tests basic usage of find_operation
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.FakeBackend,
myop,
))
def test_find_operation(self):
"""
Tests basic usage of find_operation
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.FakeBackend,
myop,
))
def test_find_operation_with_bad_backend(self):
"""
Tests that find_operation ignores bad backends
"""
def myop(backend):
pass
self.BadFakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.AnotherFakeBackend,
myop,
))
def test_find_operation_multiple_backends_preferred(self):
"""
Tests find_operation will priorities the preferred backend
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test', preferred_backend=self.AnotherFakeBackend), (
self.AnotherFakeBackend,
myop,
))
def test_find_operation_with_bad_backend(self):
"""
Tests that find_operation ignores bad backends
"""
def myop(backend):
pass
self.BadFakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.AnotherFakeBackend,
myop,
))
def test_find_operation_multiple_backends(self):
"""
Tests find_operation picks the first available backend if the operation
has been registered by multiple backends
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.FakeBackend,
myop,
))
def test_find_operation_multiple_backends(self):
"""
Tests find_operation picks the first available backend if the operation
has been registered by multiple backends
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(Image.find_operation('test'), (
self.FakeBackend,
myop,
))
def test_find_operation_multiple_backends_preferred(self):
"""
Tests find_operation will priorities the preferred backend
"""
def myop(backend):
pass
self.FakeBackend.operations = {
'test': myop,
}
self.AnotherFakeBackend.operations = {
'test': myop,
}
self.assertEqual(
Image.find_operation('test',
preferred_backend=self.AnotherFakeBackend), (
self.AnotherFakeBackend,
myop,
))
