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osmo-ttcn3-hacks
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ggsn: Add test to verify retransmit queue_resp 

Related: OS#3997
Change-Id: I8d937d0af9af8462418b174a54022655f9d77a5f
This commit is contained in:
Pau Espin 2019-05-27 20:04:35 +02:00 committed by Harald Welte
parent f1827a7baa
commit 9a5f42f997
2 changed files with 35 additions and 3 deletions
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37
ggsn_tests/GGSN_Tests.ttcn
View File

@ -300,16 +300,25 @@ module GGSN_Tests {
T_default.stop;
}
function f_pdp_ctx_del(PdpContext ctx, template BIT1 teardown_ind) runs on GT_CT {
function f_pdp_ctx_del(PdpContext ctx, template BIT1 teardown_ind, OCT1 expect_causevalue := '80'O) runs on GT_CT {
var Gtp1cUnitdata ud;
var default d;
var OCT4 expect_teid;
/* 3GPP TS 29.060 sec 7.3.6 specifies TEID used in response
message with cause value "Non existent" shall be zero. */
if (expect_causevalue == 'C0'O) {
expect_teid := '00000000'O;
} else {
expect_teid := ctx.teic;
}
f_send_gtpc(ts_GTPC_DeletePDP(g_peer_c, g_c_seq_nr, ctx.teic_remote, ctx.nsapi, teardown_ind));
T_default.start;
d := activate(pingpong());
alt {
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, deletePDPContextResponse, ctx.teic)) -> value ud {
if (ud.gtpc.gtpc_pdu.deletePDPContextResponse.cause.causevalue == '80'O) {
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, deletePDPContextResponse, expect_teid)) -> value ud {
if (ud.gtpc.gtpc_pdu.deletePDPContextResponse.cause.causevalue == expect_causevalue) {
setverdict(pass);
} else {
setverdict(fail);
@ -1244,6 +1253,27 @@ module GGSN_Tests {
f_pdp_ctx_del(ctxA, '1'B);
}
/* Send a duplicate echo req. osmo-ggsn maintains a queue for sent
responses (60 seconds): If same delete req is sent and duplicate is
detected, saved duplicate response should be sent back. */
testcase TC_act_deact_retrans_duplicate() runs on GT_CT {
f_init();
var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
f_pdp_ctx_act(ctx);
f_pdp_ctx_del(ctx, '1'B);
/* leave some time in between to make sure retransmit response queue keeps packets for a while */
f_sleep(1.0);
/* g_c_seq_nr was increased during f_pdp_ctx_del(), we want a
duplicate. If it was not a duplicate, osmo-ggsn would answer
with a failure since that PDP ctx was already deleted. */
g_c_seq_nr := g_c_seq_nr - 1;
f_pdp_ctx_del(ctx, '1'B);
/* Now send a new pdp ctx del (increased seqnum). It should fail with cause "non-existent": */
var OCT1 cause_nonexistent := 'C0'O;
f_pdp_ctx_del(ctx, '1'B, cause_nonexistent);
}
control {
execute(TC_pdp4_act_deact());
execute(TC_pdp4_act_deact_ipcp());
@ -1269,5 +1299,6 @@ module GGSN_Tests {
execute(TC_pdp46_clients_interact());
execute(TC_echo_req_resp());
execute(TC_act_deact_retrans_duplicate());
}
}

1
ggsn_tests/expected-results.xml
View File

@ -19,4 +19,5 @@
<testcase classname='GGSN_Tests' name='TC_pdp6_act_deact_gtpu_access' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_pdp6_clients_interact' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_echo_req_resp' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_act_deact_retrans_duplicate' time='MASKED'/>
</testsuite>