TypeError: 'type' object is not iterable

[trueptolemy]

Hi, cdecker!
The past days, I tried to initial lightning-integration and wanted to reproduce the "sync error" but failed.
I just now attached IRC for my first time and saw you also planed to reproduce that issue about "sync error", so I come here and report my error case that I met.

Details:

• I compiled separately these implementations.

• I tried to change the impls[] ( like change the impls order ), but always met this error.

Output:

============================= test session starts ==============================
platform linux -- Python 3.5.2, pytest-4.1.1, py-1.8.0, pluggy-0.11.0 -- /usr/bin/python3
cachedir: .pytest_cache
benchmark: 3.2.2 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
rootdir: /root/lightning-integration, inifile: pytest.ini
plugins: xdist-1.26.0, timeout-1.3.3, rerunfailures-5.0, json-0.4.0, forked-1.0.1, benchmark-3.2.2, flaky-3.5.3
collecting ... collected 0 items / 1 errors

==================================== ERRORS ====================================
___________________________ ERROR collecting test.py ___________________________
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1056: in idval
s = idfn(val)
test.py:79: in idfn
return "".join([i.displayName for i in impls])
E TypeError: 'type' object is not iterable

The above exception was the direct cause of the following exception:
/usr/local/lib/python3.5/dist-packages/pluggy/hooks.py:289: in call
return self._hookexec(self, self.get_hookimpls(), kwargs)
/usr/local/lib/python3.5/dist-packages/pluggy/manager.py:68: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
/usr/local/lib/python3.5/dist-packages/pluggy/manager.py:62: in
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:225: in pytest_pycollect_makeitem
res = list(collector._genfunctions(name, obj))
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:405: in _genfunctions
self.ihook.pytest_generate_tests(metafunc=metafunc)
/usr/local/lib/python3.5/dist-packages/pluggy/hooks.py:289: in call
return self._hookexec(self, self.get_hookimpls(), kwargs)
/usr/local/lib/python3.5/dist-packages/pluggy/manager.py:68: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
/usr/local/lib/python3.5/dist-packages/pluggy/manager.py:62: in
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:132: in pytest_generate_tests
metafunc.parametrize(*marker.args, **marker.kwargs)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:903: in parametrize
ids = self._resolve_arg_ids(argnames, ids, parameters, item=self.definition)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:957: in _resolve_arg_ids
ids = idmaker(argnames, parameters, idfn, ids, self.config, item=item)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1103: in idmaker
for valindex, parameterset in enumerate(parametersets)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1103: in
for valindex, parameterset in enumerate(parametersets)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1093: in _idvalset
for val, argname in zip(parameterset.values, argnames)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1093: in
for val, argname in zip(parameterset.values, argnames)
/usr/local/lib/python3.5/dist-packages/_pytest/python.py:1063: in _idval
six.raise_from(ValueError(msg), e)
:3: in raise_from
???
E ValueError: test.py::test_invoice_decode: error raised while trying to determine id of parameter 'impl' at position 0
E TypeError: 'type' object is not iterable
===Flaky Test Report===

===End Flaky Test Report===
!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!
=========================== 1 error in 0.53 seconds ============================