Re: [Qemu-devel] [PATCH v3 08/12] qtests: convert tests to use qmp_cmd

[Markus Armbruster <armbru@redhat.com>]

Eric Blake <eblake@redhat.com> writes:

> Now that we have the qmp_cmd() helper, we can further simplify
> some of the tests by using it.
>
> Signed-off-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/device-introspect-test.c |  3 +--
>  tests/ide-test.c               |  2 +-
>  tests/libqos/libqos.c          |  5 +++--
>  tests/libqos/pci-pc.c          |  4 ++--
>  tests/libqos/usb.c             | 18 +++++++++---------
>  tests/pc-cpu-test.c            | 10 +++++-----
>  tests/postcopy-test.c          |  9 +++++----
>  tests/vhost-user-test.c        | 12 ++++++------
>  8 files changed, 32 insertions(+), 31 deletions(-)
>
> diff --git a/tests/device-introspect-test.c b/tests/device-introspect-test.c
> index f7162c023f..fc6d559e14 100644
> --- a/tests/device-introspect-test.c
> +++ b/tests/device-introspect-test.c
> @@ -36,8 +36,7 @@ static QList *qom_list_types(const char *implements, bool abstract)
>      if (implements) {
>          qdict_put_str(args, "implements", implements);
>      }
> -    resp = qmp("{'execute': 'qom-list-types',"
> -               " 'arguments': %p }", args);
> +    resp = qmp_cmd("qom-list-types", QOBJECT(args));

This one's a clear win.

>      g_assert(qdict_haskey(resp, "return"));
>      ret = qdict_get_qlist(resp, "return");
>      QINCREF(ret);
> diff --git a/tests/ide-test.c b/tests/ide-test.c
> index ea2657d3d1..75dc472e6a 100644
> --- a/tests/ide-test.c
> +++ b/tests/ide-test.c
> @@ -651,7 +651,7 @@ static void test_retry_flush(const char *machine)
>      qmp_eventwait("STOP");
>
>      /* Complete the command */
> -    qmp_discard_response("{'execute':'cont' }");
> +    qmp_cmd_discard_response("cont", NULL);

This one isn't.

>
>      /* Check registers */
>      data = qpci_io_readb(dev, ide_bar, reg_device);
> diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
> index 42c5315423..18844617ae 100644
> --- a/tests/libqos/libqos.c
> +++ b/tests/libqos/libqos.c
> @@ -4,6 +4,7 @@
>  #include "libqtest.h"
>  #include "libqos/libqos.h"
>  #include "libqos/pci.h"
> +#include "qapi/qmp/qjson.h"
>
>  /*** Test Setup & Teardown ***/
>
> @@ -86,7 +87,7 @@ void set_context(QOSState *s)
>
>  static QDict *qmp_execute(const char *command)
>  {
> -    return qmp("{ 'execute': %s }", command);
> +    return qmp_cmd(command, NULL);

Marginal.

>  }
>
>  void migrate(QOSState *from, QOSState *to, const char *uri)
> @@ -106,7 +107,7 @@ void migrate(QOSState *from, QOSState *to, const char *uri)
>      QDECREF(rsp);
>
>      /* Issue the migrate command. */
> -    rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
> +    rsp = qmp_cmd("migrate", qobject_from_jsonf("{ 'uri': %s }", uri));

Not a simplification.  The opposite, I'm afraid.

I could become one if qmp_cmd() worked like this:

       rsp = qmp_cmd("migrate", "{ 'uri': %s }", uri));

Even better if qmp_cmd("cont", "") just works.  Hmm, unles gcc whines
about the empty format string.

>      g_assert(qdict_haskey(rsp, "return"));
>      QDECREF(rsp);
>
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