add some logging, and a more precise teardown for online python tests

python/tests/conftest.py

@@ -16,12 +16,22 @@ def pytest_addoption(parser):
     )
 
 
+@pytest.hookimpl(trylast=True)
+def pytest_runtest_call(item):
+    # perform early finalization because we otherwise get cloberred
+    # output from concurrent threads printing between execution
+    # of the test function and the teardown phase of that test function
+    if "acfactory" in item.funcargs:
+        acfactory = item.funcargs["acfactory"]
+        acfactory.finalize()
+
+
 def pytest_report_header(config, startdir):
     t = tempfile.mktemp()
     try:
-        ac = Account(t)
+        ac = Account(t, eventlogging=False)
         info = ac.get_info()
-        del ac
+        ac.shutdown()
     finally:
         os.remove(t)
     return "Deltachat core={} sqlite={}".format(
@@ -52,7 +62,6 @@ def acfactory(pytestconfig, tmpdir, request):
             self.live_count = 0
             self.offline_count = 0
             self._finalizers = []
-            request.addfinalizer(self.finalize)
             self.init_time = time.time()
 
         def finalize(self):
@@ -78,6 +87,7 @@ def acfactory(pytestconfig, tmpdir, request):
             ac = Account(tmpdb.strpath, logid="ac{}".format(self.offline_count))
             ac._evlogger.init_time = self.init_time
             ac._evlogger.set_timeout(2)
+            self._finalizers.append(ac.shutdown)
             return ac
 
         def get_configured_offline_account(self):
@@ -103,7 +113,7 @@ def acfactory(pytestconfig, tmpdir, request):
             ac._evlogger.set_timeout(30)
             ac.configure(**configdict)
             ac.start_threads()
-            self._finalizers.append(lambda: ac.stop_threads(wait=False))
+            self._finalizers.append(ac.shutdown)
             return ac
 
         def clone_online_account(self, account):
@@ -114,7 +124,7 @@ def acfactory(pytestconfig, tmpdir, request):
             ac._evlogger.set_timeout(30)
             ac.configure(addr=account.get_config("addr"), mail_pw=account.get_config("mail_pw"))
             ac.start_threads()
-            self._finalizers.append(lambda: ac.stop_threads(wait=False))
+            self._finalizers.append(ac.shutdown)
             return ac
 
     return AccountMaker()

python/tests/test_lowlevel.py

@@ -1,6 +1,6 @@
 from __future__ import print_function
 import pytest
-from deltachat import capi, Account, const, set_context_callback
+from deltachat import capi, Account, const, set_context_callback, clear_context_callback
 from deltachat.capi import ffi
 from deltachat.account import EventLogger
 
@@ -10,6 +10,13 @@ def test_empty_context():
     capi.lib.dc_close(ctx)
 
 
+def test_callback_None2int():
+    ctx = capi.lib.dc_context_new(capi.lib.py_dc_callback, ffi.NULL, ffi.NULL)
+    set_context_callback(ctx, lambda *args: None)
+    capi.lib.dc_close(ctx)
+    clear_context_callback(ctx)
+
+
 def test_dc_close_events():
     ctx = capi.lib.dc_context_new(capi.lib.py_dc_callback, ffi.NULL, ffi.NULL)
     evlog = EventLogger(ctx)