[PATCH 00/11] Improve command dispatch in test scripts

[David Gibson <david@gibson.dropbear.id.au>]

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The test scripts need to dispatch commands in various different
contexts: on the host, in namespaces, and in guests.  Currently this
is done by running each context in a tmux pane and simulating typing
into that pane using tmux commands.  This has a number of problems:

 * It's slow
 * Getting the results from programs is tricky and error prone.  We
   can misparse output if:
     * The window isn't large enough
     * Commands produce output which looks like a shell prompt
     * The shell doesn't have the prompt we expect
 * A accidental keypress while the tests are running can mess up the
   test run
 * We have to issue explicit "echo $?" commands to check if things
   succeeded

This series adds a new subsystem to the test scripts for dispatching
commands which accurately preserves output (both stdout and stderr),
and exit codes.

Most of the testsuite is converted to this new system.  For now the
distro tests still rely on the old approach, since they have some
complications that require additional handling.  That does, alas, mean
we have some ugly transitional code remaining.  Oh well, we should be
able to clean that up at some point.

This series is pased on the previous series cleaning up the
performance tests.

David Gibson (11):
  test: Correctly match "background" with "wait" commands
  test: Context execution helpers
  test: Allow a tmux pane to watch commands executed in contexts
  test: Integration of old-style pane execution and new context
    execution
  test: Issue host commands via context for most tests
  test: Use new-style contexts for passt pane in the pasta and passt
    tests
  test: Add nsholder utility
  test: Extend context system to run commands in namespace for pasta
    tests
  test: Use context system for guest commands
  test: Use context system for two_guests tests
  test: Use new-style command issue for passt_in_ns tests

 test/.gitignore           |   3 +
 test/Makefile             |  13 +-
 test/lib/context          | 127 ++++++++++++++++++
 test/lib/layout           |  58 +++-----
 test/lib/setup            | 274 +++++++++++++++++++-------------------
 test/lib/term             |  84 ++++++++++++
 test/lib/test             | 138 ++++++++-----------
 test/nsholder.c           | 117 ++++++++++++++++
 test/passt.mbuto          |  32 ++++-
 test/run                  |   1 +
 test/shutdown/passt       |   4 +-
 test/shutdown/passt_in_ns |   4 +-
 test/tcp/passt            |   2 +
 test/tcp/passt_in_ns      |  17 ++-
 test/tcp/pasta            |   1 -
 test/udp/passt            |   1 +
 test/udp/passt_in_ns      |   5 +-
 test/udp/pasta            |   1 -
 18 files changed, 608 insertions(+), 274 deletions(-)
 create mode 100644 test/lib/context
 create mode 100644 test/nsholder.c

-- 
2.37.2