Add system tests for IXFR statistics

Ensure IXFR statistics are calculated correctly by dig and named, both
for incoming and outgoing transfers.  Disable EDNS when using dig to
request an IXFR so that the same reference file can be used for testing
statistics calculated by both dig and named (dig uses EDNS by default
when sending transfer requests, which affects the number of bytes
transferred).

bin/tests/system/ixfr/clean.sh

@@ -9,6 +9,7 @@
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
 
+rm -f stats.*
 rm -f ns1/myftp.db
 rm -f ns3/*.jnl ns3/mytest.db ns3/subtest.db
 rm -f ns4/*.jnl ns4/*.db
@@ -19,4 +20,4 @@ rm -f */ans.run
 rm -f dig.out dig.out1 dig.out2 dig.out3
 rm -f ns3/large.db
 rm -f ns*/named.lock
-rm -f ns*/managed-keys.bind*
+rm -f ns*/managed-keys.bind* ns*/*.mkeys

bin/tests/system/ixfr/ixfr-stats.good

@@ -0,0 +1,3 @@
+messages=1
+records=6
+bytes=219

bin/tests/system/ixfr/tests.sh

@@ -307,5 +307,30 @@ if [ ${ret} != 0 ]; then
 	status=1;
 fi
 
+echo_i "checking whether dig calculates IXFR statistics correctly"
+ret=0
+$DIG $DIGOPTS +noedns +stat -b 10.53.0.4 @10.53.0.4 test. ixfr=2 > dig.out1
+get_dig_xfer_stats dig.out1 > stats.dig
+diff ixfr-stats.good stats.dig || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=`expr $status + $ret`
+
+# Note: in the next two tests, we use ns4 logs for checking both incoming and
+# outgoing transfer statistics as ns4 is both a secondary server (for ns3) and a
+# primary server (for dig queries from the previous test) for "test".
+echo_i "checking whether named calculates incoming IXFR statistics correctly"
+ret=0
+get_named_xfer_stats ns4/named.run 10.53.0.3 test "Transfer completed" > stats.incoming
+diff ixfr-stats.good stats.incoming || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=`expr $status + $ret`
+
+echo_i "checking whether named calculates outgoing IXFR statistics correctly"
+ret=0
+get_named_xfer_stats ns4/named.run 10.53.0.4 test "IXFR ended" > stats.outgoing
+diff ixfr-stats.good stats.outgoing || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=`expr $status + $ret`
+
 echo_i "exit status: $status"
 [ $status -eq 0 ] || exit 1

util/copyrights

@@ -702,6 +702,7 @@
 ./bin/tests/system/integrity/tests.sh		SH	2017,2018,2019
 ./bin/tests/system/ixfr/ans2/startme		X	2011,2018,2019
 ./bin/tests/system/ixfr/clean.sh		SH	2001,2004,2007,2011,2012,2014,2015,2016,2018,2019
+./bin/tests/system/ixfr/ixfr-stats.good		X	2019
 ./bin/tests/system/ixfr/ns1/startme		X	2012,2013,2018,2019
 ./bin/tests/system/ixfr/prereq.sh		SH	2001,2004,2007,2012,2014,2016,2018,2019
 ./bin/tests/system/ixfr/setup.sh		SH	2001,2004,2007,2011,2012,2013,2014,2016,2018,2019