[v3,4/6] tests: Add basic migration precopy tcp test

Not sharing code from precopy/unix because we have to read back the
tcp parameter.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 tests/migration-test.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 56 insertions(+), 3 deletions(-)

* Juan Quintela (quintela@redhat.com) wrote:
> Not sharing code from precopy/unix because we have to read back the
> tcp parameter.
> 
> Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

> ---
>  tests/migration-test.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++---
>  1 file changed, 56 insertions(+), 3 deletions(-)
> 
> diff --git a/tests/migration-test.c b/tests/migration-test.c
> index 3f3f056be6..841c89e28a 100644
> --- a/tests/migration-test.c
> +++ b/tests/migration-test.c
> @@ -354,8 +354,7 @@ static void cleanup(const char *filename)
>      g_free(path);
>  }
>  
> -static void migrate_check_parameter(QTestState *who, const char *parameter,
> -                                    const char *value)
> +static char *migrate_get_parameter(QTestState *who, const char *parameter)
>  {
>      QDict *rsp, *rsp_return;
>      char *result;
> @@ -364,9 +363,18 @@ static void migrate_check_parameter(QTestState *who, const char *parameter,
>      rsp_return = qdict_get_qdict(rsp, "return");
>      result = g_strdup_printf("%" PRId64,
>                               qdict_get_try_int(rsp_return,  parameter, -1));
> +    QDECREF(rsp);
> +    return result;
> +}
> +
> +static void migrate_check_parameter(QTestState *who, const char *parameter,
> +                                    const char *value)
> +{
> +    char *result;
> +
> +    result = migrate_get_parameter(who, parameter);
>      g_assert_cmpstr(result, ==, value);
>      g_free(result);
> -    QDECREF(rsp);
>  }
>  
>  static void deprecated_set_downtime(QTestState *who, const double value)
> @@ -621,6 +629,50 @@ static void test_precopy_unix(void)
>      g_free(uri);
>  }
>  
> +static void test_precopy_tcp(void)
> +{
> +    char *uri;
> +    char *port;
> +    QTestState *from, *to;
> +
> +    test_migrate_start(&from, &to, "tcp:127.0.0.1:0");
> +
> +    /* We want to pick a speed slow enough that the test completes
> +     * quickly, but that it doesn't complete precopy even on a slow
> +     * machine, so also set the downtime.
> +     */
> +    /* 1 ms */
> +    migrate_set_parameter(from, "downtime-limit", "1");
> +    /* 1GB/s slow*/
> +    migrate_set_parameter(from, "max-bandwidth", "1000000000");
> +
> +    /* Wait for the first serial output from the source */
> +    wait_for_serial("src_serial");
> +
> +    port = migrate_get_parameter(to, "tcp-port");
> +    uri = g_strdup_printf("tcp:127.0.0.1:%s", port);
> +
> +    migrate(from, uri);
> +
> +    wait_for_migration_pass(from);
> +
> +    /* 300 ms should converge */
> +    migrate_set_parameter(from, "downtime-limit", "300");
> +
> +    if (!got_stop) {
> +        qtest_qmp_eventwait(from, "STOP");
> +    }
> +
> +    qtest_qmp_eventwait(to, "RESUME");
> +
> +    wait_for_serial("dest_serial");
> +    wait_for_migration_complete(from);
> +
> +    test_migrate_end(from, to);
> +    g_free(uri);
> +    g_free(port);
> +}
> +
>  int main(int argc, char **argv)
>  {
>      char template[] = "/tmp/migration-test-XXXXXX";
> @@ -641,6 +693,7 @@ int main(int argc, char **argv)
>      module_call_init(MODULE_INIT_QOM);
>  
>      qtest_add_func("/migration/precopy/unix", test_precopy_unix);
> +    qtest_add_func("/migration/precopy/tcp", test_precopy_tcp);
>      qtest_add_func("/migration/postcopy/unix", test_postcopy);
>  
>      ret = g_test_run();
> -- 
> 2.14.3
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK