def test_register_backend(self):
"""
Tests basic usage of register_backend
"""
Image.register_backend(self.FakeBackend)
self.assertEqual(Image.backends, [self.FakeBackend])
def test_register_backend(self):
"""
Tests basic usage of register_backend
"""
Image.register_backend(self.FakeBackend)
self.assertEqual(Image.backends, [self.FakeBackend])
def test_register_backend_removes_duplicates(self):
"""
Tests register_backend won't insert the same backend more than once
"""
Image.register_backend(self.FakeBackend)
Image.register_backend(self.FakeBackend)
self.assertEqual(Image.backends, [self.FakeBackend])
def test_register_backend_multiple(self):
"""
Tests register_backend can register multiple backends
"""
Image.register_backend(self.FakeBackend)
Image.register_backend(self.AnotherFakeBackend)
self.assertEqual(Image.backends, [self.FakeBackend, self.AnotherFakeBackend])
def test_register_backend_removes_duplicates(self):
"""
Tests register_backend won't insert the same backend more than once
"""
Image.register_backend(self.FakeBackend)
Image.register_backend(self.FakeBackend)
self.assertEqual(Image.backends, [self.FakeBackend])
def test_register_backend_multiple(self):
"""
Tests register_backend can register multiple backends
"""
Image.register_backend(self.FakeBackend)
Image.register_backend(self.AnotherFakeBackend)
self.assertEqual(Image.backends,
[self.FakeBackend, self.AnotherFakeBackend])
def setUp(self):
# Reset Image class
self.reset()
# Make two fake backends and a bad backend
class FakeBackend(ImageBackend):
def to_buffer(self):
pass
@classmethod
def from_buffer(cls, buf):
return cls()
@classmethod
def from_file(cls, f):
return cls()
class AnotherFakeBackend(ImageBackend):
def to_buffer(self):
pass
@classmethod
def from_buffer(cls, buf):
return cls()
@classmethod
def from_file(cls, f):
return cls()
class BadFakeBackend(ImageBackend):
@classmethod
def check(cls):
raise ImportError("Bad image backend")
self.FakeBackend = FakeBackend
self.AnotherFakeBackend = AnotherFakeBackend
self.BadFakeBackend = BadFakeBackend
Image.register_backend(FakeBackend)
Image.register_backend(AnotherFakeBackend)
Image.register_backend(BadFakeBackend)
def setUp(self):
# Reset Image class
self.reset()
# Make two fake backends and a bad backend
class FakeBackend(ImageBackend):
def to_buffer(self):
pass
@classmethod
def from_buffer(cls, buf):
return cls()
@classmethod
def from_file(cls, f):
return cls()
class AnotherFakeBackend(ImageBackend):
def to_buffer(self):
pass
@classmethod
def from_buffer(cls, buf):
return cls()
@classmethod
def from_file(cls, f):
return cls()
class BadFakeBackend(ImageBackend):
@classmethod
def check(cls):
raise ImportError("Bad image backend")
self.FakeBackend = FakeBackend
self.AnotherFakeBackend = AnotherFakeBackend
self.BadFakeBackend = BadFakeBackend
Image.register_backend(FakeBackend)
Image.register_backend(AnotherFakeBackend)
Image.register_backend(BadFakeBackend)
