circuitpython/tests/basics/async_with.py
Damien George 12ce9f2689 py/compile: Fix handling of unwinding BaseException in async with.
All exceptions that unwind through the async-with must be caught and
BaseException is the top-level class, which includes Exception and others.

Fixes issue #4552.
2019-02-26 23:52:10 +11:00

40 lines
750 B
Python

# test simple async with execution
class AContext:
async def __aenter__(self):
print('enter')
return 1
async def __aexit__(self, exc_type, exc, tb):
print('exit', exc_type, exc)
async def f():
async with AContext():
print('body')
o = f()
try:
o.send(None)
except StopIteration:
print('finished')
async def g():
async with AContext() as ac:
print(ac)
raise ValueError('error')
o = g()
try:
o.send(None)
except ValueError:
print('ValueError')
# test raising BaseException to make sure it is handled by the async-with
async def h():
async with AContext():
raise BaseException
o = h()
try:
o.send(None)
except BaseException:
print('BaseException')