def test_empty_async_generator():
" Test asynchronous generator. "
items = []
f = ensure_future(consume_async_generator(
_empty_async_generator(), lambda: False, items.append))
# Run the event loop until all items are collected.
get_event_loop().run_until_complete(f)
assert items == []
# Check that `consume_async_generator` didn't fail.
assert f.result() is None
def test_generator_to_async_generator():
"""
Test conversion of sync to asycn generator.
This should run the synchronous parts in a background thread.
"""
async_gen = generator_to_async_generator(_sync_generator)
items = []
f = ensure_future(consume_async_generator(
async_gen, lambda: False, items.append))
# Run the event loop until all items are collected.
get_event_loop().run_until_complete(f)
assert items == [1, 10]
# Check that `consume_async_generator` didn't fail.
assert f.result() is None