tests: trivial enhancements for OOB

First two patches add OOB detection for current qapi-schema tests (which I missed in the OOB series but pointed out by Eric Blake). The 3rd patch addressed one suggestion from Eric too here:

http://lists.gnu.org/archive/html/qemu-devel/2018-03/msg03177.html

I tried to batch the commands in a single string buffer but it's not that easy - because currently qtest_async_qmp() (and finally, qmp_fd_sendv()) does not really support multiple qobjects in a single command buffer. Let's put that aside. After all even calling qtest_async_qmp() many times would be really fast, since we are basically filling things to the write buffer very quickly (I believe that's much faster than the IO really flushed to the receiver side).

But, adding the "id" field and check that would be far easier, that's what I did in that last patch.

It's fine even for 2.12, but I'll let people decide.

Please review, thanks.

Peter Xu (3):
tests: let qapi-schema tests detect oob
tests: add oob-test for qapi-schema
tests: more strict command batching test

 tests/Makefile.include                  |  1 +
 tests/qapi-schema/doc-good.out          |  4 ++--
 tests/qapi-schema/ident-with-escape.out |  2 +-
 tests/qapi-schema/indented-expr.out     |  4 ++--
 tests/qapi-schema/oob-test.err          |  0
 tests/qapi-schema/oob-test.exit         |  1 +
 tests/qapi-schema/oob-test.json         |  2 ++
 tests/qapi-schema/oob-test.out          |  6 ++++++
 tests/qapi-schema/qapi-schema-test.out  | 18 +++++++++---------
 tests/qapi-schema/test-qapi.py          |  4 ++--
 tests/qmp-test.c                        |  8 +++++++-
 11 files changed, 33 insertions(+), 17 deletions(-)
 create mode 100644 tests/qapi-schema/oob-test.err
 create mode 100644 tests/qapi-schema/oob-test.exit
 create mode 100644 tests/qapi-schema/oob-test.json
 create mode 100644 tests/qapi-schema/oob-test.out

2.14.3