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import pytest
from async_property import async_cached_property, AwaitLoader
pytestmark = pytest.mark.asyncio
class MyModel(AwaitLoader):
@async_cached_property
async def foo(self):
return 'bar'
async def test_empty_instance():
assert await AwaitLoader()
async def test_loader():
instance = await MyModel()
assert 'foo' in instance.__async_property__.cache
assert instance.foo == 'bar'
async def test_delayed_field():
instance = MyModel()
coro = instance.foo
await instance
assert instance.foo == 'bar'
assert await coro == 'bar'
async def test_delayed_field_with_setter():
instance = MyModel()
coro = instance.foo
await instance
assert instance.foo == 'bar'
instance.foo = 'abc'
assert await coro == 'abc'
async def test_empty_instance_loaders():
assert AwaitLoader._async_property_loaders == ()
async def test_instance_loaders():
assert MyModel._async_property_loaders == (
('foo', MyModel.foo.get_loader),
)
class MyModelWithLoad(AwaitLoader):
async def load(self):
self.loaded = True
async def test_call_load():
instance = await MyModelWithLoad()
assert instance.loaded == True
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