bsc: f_create_chan_and_exp(): ensure that SCCP connection is up
This change fixes sporadic failures of TC_cm_serv_rej:
RAN Connection table not found by component TC_cm_serv_rej(2648)
BSC_Tests.ttcn:11106 BSC_Tests control part
BSC_Tests.ttcn:10550 TC_cm_serv_rej testcase
The reason is that sometimes a BSSAP/DTAP PDU (with CM Service Reject)
gets enqueued before the SUT has established an SCCP connection to the
virtual MSC. This causes a lookup error in the RAN connection table.
A simple solution would be to add a receive statement after calling
f_create_chan_and_exp(), like it's done everywhere else:
f_create_chan_and_exp();
BSSAP.receive(tr_BSSMAP_ComplL3); // <---
But a more general solution is to expect and receive this message in
f_create_chan_and_exp(), so we can reduce code duplication and make
the API more convinient. This is exactly what this change does.
Change-Id: Ic675168e29919e1234cb49440c4a630238ff5d70
Related: SYS#4878
2 files changed