[PATCH 0/3] nfs-utils: add testing infrastructure to nfs-utils (try #3)

[Jeff Layton <jlayton@redhat.com>]

This is an updated patchset for adding test infrastructure to nfs-utils.
The main differences from the last patchset are:

1) renamed "statdtest" to "nsm_client", since that's a bit more
descriptive of its actual purpose.

2) added a very simple "statdb_dump" program that dumps out the more
interesting fields of the of the NSM monitor DB. The inital mon/unmon
test now uses that program to verify the contents of the DB after the
MON call.

This patchset is intended as a starting point for an automated test
suite for nfs-utils. The idea here is to start simply and add a suite of
tests that we can run via "make check" -- the standard automake method
for running tests.

Clearly there are limits to what we can test without a multi-host test
harness. My hope is that this should help keep us from breaking basic
functionality by allowing us to test it in a very simple fashion. At
some point in the future we should also consider how to best handle
multi-machine testing, but I see that as complimenting this code rather
than replacing it.

For this set, the focus is on testing statd, which is particularly
susceptible to subtle breakage. Problems with it are often not noticed
until lock recovery breaks, and that may greatly lag the actual
breakage.

To faciitate statd testing, I've added a "nsm_client" program that can
serve as a synthetic statd client and an NLM simulator. It's very
loosely based on the old statd simulator code. That program is dependent
on some of Chuck Lever's recent statd patches -- notably the ones that
break out common NSM code into libnsm.a.

For this initial drop, I'm just adding a single test that tests mon and
unmon functionality with statd. Adding more tests should fairly simple
to do.

Jeff Layton (3):
  nfs-utils: introduce new statd testing simulator
  nfs-utils: add statdb_dump utility
  nfs-utils: add initial tests for statd that run via "make check"

 Makefile.am                          |    2 +-
 configure.ac                         |    4 +-
 tests/Makefile.am                    |   13 +
 tests/nsm_client/Makefile.am         |   45 ++++
 tests/nsm_client/README              |   12 +
 tests/nsm_client/nlm_sm_inter.x      |   43 +++
 tests/nsm_client/nsm_client.c        |  465 ++++++++++++++++++++++++++++++++++
 tests/statdb_dump.c                  |   75 ++++++
 tests/t0001-statd-basic-mon-unmon.sh |   55 ++++
 tests/test-lib.sh                    |   41 +++
 10 files changed, 753 insertions(+), 2 deletions(-)
 create mode 100644 tests/Makefile.am
 create mode 100644 tests/nsm_client/Makefile.am
 create mode 100644 tests/nsm_client/README
 create mode 100644 tests/nsm_client/nlm_sm_inter.x
 create mode 100644 tests/nsm_client/nsm_client.c
 create mode 100644 tests/statdb_dump.c
 create mode 100755 tests/t0001-statd-basic-mon-unmon.sh
 create mode 100755 tests/test-lib.sh