ranap_parse_lai(): Fix wrong BCD decoding for MNC. Add test.
Fix the ranap_parse_lai() part that decodes the MNC: place the *10 at the
proper MNC digit.
Add a comprehensive test for ranap_parse_lai() in test-helpers.c. Because
ranap_parse_lai() logs things, add test_common.c to test-helpers compilation
and an expected stderr output to test-helpers' testsuite.at def.
diff --git a/src/tests/test-helpers.ok b/src/tests/test-helpers.ok
index 4ba4d54..ddfea78 100644
--- a/src/tests/test-helpers.ok
+++ b/src/tests/test-helpers.ok
@@ -10,3 +10,16 @@
Encoded: 18adbeef
Decoding string from asn.1: 0123456789012345
Decoding large string from asn1: 0123456789012345678901234567890
+Testing ranap common functions
+PLMN-Id [ 21 f3 54 ], LAC [ ab cd ]
+ rc == 0
+ mcc == 123 mnc == 45
+ lac == 0xabcd
+PLMN-Id [ 21 43 65 ], LAC [ ab cd ]
+ rc == 0
+ mcc == 123 mnc == 456
+ lac == 0xabcd
+PLMN-Id [ 21 43 ], LAC [ ab cd ]
+ rc == -1
+PLMN-Id [ 21 43 65 ], LAC [ ab ]
+ rc == -1