Test Suite

Running tests

The libreswan tests, in testing/pluto, can be run using several different mechanisms:

Test Frameworks

Framework	Speed	Host	Guest	Modifies /	Notes
Namespaces	fast	linux	linux	yes	results are host dependent (for instance the host's kernel version) requires all dependencies, including libreswan, to be installed on /
KVM	slower	generic?	Fedora, OpenBSD	no	in theory it can be run on any system supporting libvirt/KVM (but only Linux has ever been used)
Docker		linux			Linux centric using host kernel. Ideal for build tests. Can build using various Linux Distributions : CentOS 6, 7, 8, Fedora 28 - rawhide, Debian, Ubuntu. Also for run tests using systemd.

How tests work

All the test cases involving VMs are located in the libreswan directory under testing/pluto/. The most basic test case is called basic-pluto-01. Each test case consists of a few files:

• description.txt to explain what this test case actually tests
• ipsec.conf files - for host west is called west.conf. This can also include configuration files for strongswan or racoon2 for interop testig
• ipsec.secret files - if non-default configurations are used. also uses the host syntax, eg west.secrets, east.secrets.
• An init.sh file for each VM that needs to start (eg westinit.sh, eastinit.sh, etc)
• One run.sh file for the host that is the initiator (eg westrun.sh)
• Known good (sanitized) output for each VM (eg west.console.txt, east.console.txt)
• testparams.sh if there are any non-default test parameters

Once the test run has completed, you will see an OUTPUT/ directory in the test case directory:

$ ls OUTPUT/
east.console.diff  east.console.verbose.txt  RESULT       west.console.txt          west.pluto.log
east.console.txt   east.pluto.log            swan12.pcap  west.console.diff  west.console.verbose.txt

• RESULT is a text file (whose format is sure to change in the next few months) stating whether the test succeeded or failed.
• The diff files show the differences between this testrun and the last known good output.
• Each VM's serial (sanitized) console log (eg west.console.txt)
• Each VM's unsanitized verbose console output (eg west.console.verbose.txt)
• A network capture from the bridge device (eg swan12.pcap)
• Each VM's pluto log, created with plutodebug=all (eg west.pluto.log)
• Any core dumps generated if a pluto daemon crashed

testing/baseconfigs/

configuration files installed on guest machines

testing/guestbin/

shell scripts used by tests, and run on the guest

testing/linux-system-roles.vpn/

???

testing/packaging/

???

testing/pluto/TESTLIST

list of tests, and their expected outcome

testing/pluto/*/

individual test directories

testing/programs/

executables used by tests, and run on the guest

testing/sanitizers/

filters for cleaning up the test output

testing/utils/

test drivers and other host tools

testing/x509/

certificates, scripts are run on a guest

Network Diagrams

Fine Print

• The Build domains, NIC, and the BSD test domains all have access to the NAT gateway SWANDEFAULT
  • Fedora's test domains (EAST and WEST) do not; why?
  • on the build domain's SWANDEFAULT is the first interface(0)
  • on the transmogrified NIC it's the 3rd interface(2), why (history)?
  • on the transmogrified BSD test domains SWANDEFAULT is kept as the first interface (it is so that if0 is always configured for NFS)
  • the BSD domains use SWANDEFAULT when NFS mounting /pool, /source and /testing
• interfaces are for Fedora
  • OpenBSD uses vioN (different order)
  • NetBSD uses vioifN (in a different order)

State of the ASCII Art

 LEFT                                             RIGHT
 -----------------------------+----------------------- 192.0.3.0/24
                              |
                        192.0.3.254(eth0)
      ROAD                  NORTH
 192.1.3.209(eth0)      192.1.3.33(eth1)
       |                      |
 ------+----------------------+-------+--------------- 192.1.3.0/254
                                      |
                                192.1.3.254(eth1)
                                     NIC-------------- swandefault(eth2)
                                192.1.2.254(eth0)
                                      |
 ------+------------------------------+--------+------ 192.1.2.0/24
       |                                       |
 192.1.2.45(eth1)                        192.1.2.23(eth1)
      WEST---[swandefault]                   EAST---[swandefault]
 192.0.1.254(eth0)                       192.0.2.254(eth0)
       |                                       |
       |                                  -----+------ 192.0.2.0/255
       |
 ------+---------------------------------------------- 192.0.1.0/255

 ----------------------------------------------------- 192.1.4.0/255

Older diagrams