tests/qtest: get rid of 'qmp_command' helper in migration test

This function duplicates logic of qtest_qmp_assert_success_ref.
The qtest_qmp_assert_success_ref method has better diagnostics
on failure because it prints the entire QMP response, instead
of just asserting on existance of the 'error' key.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230601161347.1803440-4-berrange@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

3 files changed, 15 insertions, 39 deletions

diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c
index f6f3c6680f..bddf3f8d4d 100644
--- a/tests/qtest/migration-helpers.c
+++ b/tests/qtest/migration-helpers.c
@@ -86,28 +86,6 @@ QDict *wait_command(QTestState *who, const char *command, ...)
 }
 
 /*
- * Execute the qmp command only
- */
-QDict *qmp_command(QTestState *who, const char *command, ...)
-{
-    va_list ap;
-    QDict *resp, *ret;
-
-    va_start(ap, command);
-    resp = qtest_vqmp(who, command, ap);
-    va_end(ap);
-
-    g_assert(!qdict_haskey(resp, "error"));
-    g_assert(qdict_haskey(resp, "return"));
-
-    ret = qdict_get_qdict(resp, "return");
-    qobject_ref(ret);
-    qobject_unref(resp);
-
-    return ret;
-}
-
-/*
  * Send QMP command "migrate".
  * Arguments are built from @fmt... (formatted like
  * qobject_from_jsonf_nofail()) with "uri": @uri spliced in.
diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helpers.h
index a188b62787..2e51a6e195 100644
--- a/tests/qtest/migration-helpers.h
+++ b/tests/qtest/migration-helpers.h
@@ -25,9 +25,6 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...);
 G_GNUC_PRINTF(2, 3)
 QDict *wait_command(QTestState *who, const char *command, ...);
 
-G_GNUC_PRINTF(2, 3)
-QDict *qmp_command(QTestState *who, const char *command, ...);
-
 G_GNUC_PRINTF(3, 4)
 void migrate_qmp(QTestState *who, const char *uri, const char *fmt, ...);
 
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index b99b49a314..9ce27f89ec 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -2322,32 +2322,33 @@ static void test_multifd_tcp_cancel(void)
 
 static void calc_dirty_rate(QTestState *who, uint64_t calc_time)
 {
-    qobject_unref(qmp_command(who,
-                  "{ 'execute': 'calc-dirty-rate',"
-                  "'arguments': { "
-                  "'calc-time': %" PRIu64 ","
-                  "'mode': 'dirty-ring' }}",
-                  calc_time));
+    qtest_qmp_assert_success(who,
+                             "{ 'execute': 'calc-dirty-rate',"
+                             "'arguments': { "
+                             "'calc-time': %" PRIu64 ","
+                             "'mode': 'dirty-ring' }}",
+                             calc_time);
 }
 
 static QDict *query_dirty_rate(QTestState *who)
 {
-    return qmp_command(who, "{ 'execute': 'query-dirty-rate' }");
+    return qtest_qmp_assert_success_ref(who,
+                                        "{ 'execute': 'query-dirty-rate' }");
 }
 
 static void dirtylimit_set_all(QTestState *who, uint64_t dirtyrate)
 {
-    qobject_unref(qmp_command(who,
-                  "{ 'execute': 'set-vcpu-dirty-limit',"
-                  "'arguments': { "
-                  "'dirty-rate': %" PRIu64 " } }",
-                  dirtyrate));
+    qtest_qmp_assert_success(who,
+                             "{ 'execute': 'set-vcpu-dirty-limit',"
+                             "'arguments': { "
+                             "'dirty-rate': %" PRIu64 " } }",
+                             dirtyrate);
 }
 
 static void cancel_vcpu_dirty_limit(QTestState *who)
 {
-    qobject_unref(qmp_command(who,
-                  "{ 'execute': 'cancel-vcpu-dirty-limit' }"));
+    qtest_qmp_assert_success(who,
+                             "{ 'execute': 'cancel-vcpu-dirty-limit' }");
 }
 
 static QDict *query_vcpu_dirty_limit(QTestState *who)