def test_blocked_output(self):
# https://github.com/conan-io/conan/issues/4277
stream = StringIO()
def write_raise(self, data):
write_raise.counter = getattr(write_raise, "counter", 0) + 1
if write_raise.counter < 2:
raise IOError("Stdout locked")
self.super_write(data)
stream.super_write = stream.write
stream.write = MethodType(write_raise, stream)
out = ConanOutput(stream)
with mock.patch("time.sleep") as sleep:
out.write("Hello world")
sleep.assert_any_call(0.02)
self.assertEqual("Hello world", stream.getvalue())
