[Qemu-devel] [PATCH] tests/drive_del-test: Use qtest_init() instead of qtest_start()

[Qemu-devel] [PATCH] tests/drive_del-test: Use qtest_init() instead of qtest_start()

[Thomas Huth]

qtest_start() + qtest_end() should be avoided, since they use the
global_qtest variable that we want to get rid of in the long run
Use qtest_init() and qtest_quit() instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/drive_del-test.c | 63 +++++++++++++++++++++---------------------
 1 file changed, 32 insertions(+), 31 deletions(-)

diff --git a/tests/drive_del-test.c b/tests/drive_del-test.c
index 2f9474e03c..b56b223fc2 100644
--- a/tests/drive_del-test.c
+++ b/tests/drive_del-test.c
@@ -16,32 +16,32 @@
 #include "qapi/qmp/qdict.h"
 
 /* TODO actually test the results and get rid of this */
-#define qmp_discard_response(...) qobject_unref(qmp(__VA_ARGS__))
+#define qmp_discard_response(q, ...) qobject_unref(qtest_qmp(q, __VA_ARGS__))
 
-static void drive_add(void)
+static void drive_add(QTestState *qts)
 {
-    char *resp = hmp("drive_add 0 if=none,id=drive0");
+    char *resp = qtest_hmp(qts, "drive_add 0 if=none,id=drive0");
 
     g_assert_cmpstr(resp, ==, "OK\r\n");
     g_free(resp);
 }
 
-static void drive_del(void)
+static void drive_del(QTestState *qts)
 {
-    char *resp = hmp("drive_del drive0");
+    char *resp = qtest_hmp(qts, "drive_del drive0");
 
     g_assert_cmpstr(resp, ==, "");
     g_free(resp);
 }
 
-static void device_del(void)
+static void device_del(QTestState *qts)
 {
     QDict *response;
 
     /* Complication: ignore DEVICE_DELETED event */
-    qmp_discard_response("{'execute': 'device_del',"
+    qmp_discard_response(qts, "{'execute': 'device_del',"
                          " 'arguments': { 'id': 'dev0' } }");
-    response = qmp_receive();
+    response = qtest_qmp_receive(qts);
     g_assert(response);
     g_assert(qdict_haskey(response, "return"));
     qobject_unref(response);
@@ -49,18 +49,20 @@ static void device_del(void)
 
 static void test_drive_without_dev(void)
 {
+    QTestState *qts;
+
     /* Start with an empty drive */
-    qtest_start("-drive if=none,id=drive0");
+    qts = qtest_init("-drive if=none,id=drive0");
 
     /* Delete the drive */
-    drive_del();
+    drive_del(qts);
 
     /* Ensure re-adding the drive works - there should be no duplicate ID error
      * because the old drive must be gone.
      */
-    drive_add();
+    drive_add(qts);
 
-    qtest_end();
+    qtest_quit(qts);
 }
 
 /*
@@ -85,54 +87,53 @@ static void test_after_failed_device_add(void)
 {
     char driver[32];
     QDict *response;
+    QTestState *qts;
 
     snprintf(driver, sizeof(driver), "virtio-blk-%s",
              qvirtio_get_dev_type());
 
-    qtest_start("-drive if=none,id=drive0");
+    qts = qtest_init("-drive if=none,id=drive0");
 
     /* Make device_add fail. If this leaks the virtio-blk device then a
      * reference to drive0 will also be held (via qdev properties).
      */
-    response = qmp("{'execute': 'device_add',"
-                   " 'arguments': {"
-                   "   'driver': %s,"
-                   "   'drive': 'drive0'"
-                   "}}", driver);
+    response = qtest_qmp(qts, "{'execute': 'device_add',"
+                              " 'arguments': {"
+                              "   'driver': %s,"
+                              "   'drive': 'drive0'"
+                              "}}", driver);
     g_assert(response);
     qmp_assert_error_class(response, "GenericError");
 
     /* Delete the drive */
-    drive_del();
+    drive_del(qts);
 
     /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
      * virtio-blk device exists that holds a reference to the old drive0.
      */
-    drive_add();
+    drive_add(qts);
 
-    qtest_end();
+    qtest_quit(qts);
 }
 
 static void test_drive_del_device_del(void)
 {
-    char *args;
+    QTestState *qts;
 
     /* Start with a drive used by a device that unplugs instantaneously */
-    args = g_strdup_printf("-drive if=none,id=drive0,file=null-co://,format=raw"
-                           " -device virtio-scsi-%s"
-                           " -device scsi-hd,drive=drive0,id=dev0",
-                           qvirtio_get_dev_type());
-    qtest_start(args);
+    qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,format=raw"
+                      " -device virtio-scsi-%s"
+                      " -device scsi-hd,drive=drive0,id=dev0",
+                      qvirtio_get_dev_type());
 
     /*
      * Delete the drive, and then the device
      * Doing it in this order takes notoriously tricky special paths
      */
-    drive_del();
-    device_del();
+    drive_del(qts);
+    device_del(qts);
 
-    qtest_end();
-    g_free(args);
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)
-- 
2.21.0

Re: [Qemu-devel] [PATCH] tests/drive_del-test: Use qtest_init() instead of qtest_start()

[Eric Blake]

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On 5/8/19 9:21 AM, Thomas Huth wrote:
> qtest_start() + qtest_end() should be avoided, since they use the
> global_qtest variable that we want to get rid of in the long run
> Use qtest_init() and qtest_quit() instead.
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  tests/drive_del-test.c | 63 +++++++++++++++++++++---------------------
>  1 file changed, 32 insertions(+), 31 deletions(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org


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