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tests: Introduce generic device hot-plug/hot-unplug functions

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A lot of tests provide code for adding and removing a device via the
device_add and device_del QMP commands. Maintaining this code in so many
places is cumbersome and error-prone (some of the code parts check the
responses for device deletion in an incorrect way, for example, we've got
to deal with both, error code and DEVICE_DEL event here). So let's provide
some proper generic functions for adding and removing a device instead.

The code for correctly unplugging a device has been taken from a patch
from Peter Xu.

Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2017-08-15 08:58:54 +02:00
parent 3dabde1128
commit acd80015fb
8 changed files with 112 additions and 155 deletions
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24
tests/virtio-scsi-test.c
View file

@ -192,32 +192,12 @@ static void pci_nop(void)
static void hotplug(void)
{
QDict *response;
QOSState *qs;
qs = qvirtio_scsi_start(
"-drive id=drv1,if=none,file=null-co://,format=raw");
response = qmp("{\"execute\": \"device_add\","
" \"arguments\": {"
" \"driver\": \"scsi-hd\","
" \"id\": \"scsi-hd\","
" \"drive\": \"drv1\""
"}}");
g_assert(response);
g_assert(!qdict_haskey(response, "error"));
QDECREF(response);
response = qmp("{\"execute\": \"device_del\","
" \"arguments\": {"
" \"id\": \"scsi-hd\""
"}}");
g_assert(response);
g_assert(!qdict_haskey(response, "error"));
g_assert(qdict_haskey(response, "event"));
g_assert(!strcmp(qdict_get_str(response, "event"), "DEVICE_DELETED"));
QDECREF(response);
qtest_qmp_device_add("scsi-hd", "scsihd", "'drive': 'drv1'");
qtest_qmp_device_del("scsihd");
qvirtio_scsi_stop(qs);
}