tests: qmp-cmd-test: fix memory leak

Properly free each test response to avoid memory leak and separate
qtest_qmp() calls with spare lines, in a consistent manner.

Fixes: 5b88849("tests/qmp-cmd-test: Add qmp/object-add-failure-modes")
Reviewed-by: Eric Auger <[email protected]>
Signed-off-by: Li Qiang <[email protected]>
Message-Id: <[email protected]>
Fixes: 9fc719b ("tests/qmp-cmd-test: Add qmp/object-add-duplicate-id")
Reviewed-by: Markus Armbruster <[email protected]>
Signed-off-by: Thomas Huth <[email protected]>

Author: terenceli

tests/qtest/qmp-cmd-test.c

@@ -230,6 +230,8 @@ static void test_object_add_failure_modes(void)
                      " 'props': {'size': 1048576 } } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
+
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram', 'id': 'ram1',"
                      " 'props': {'size': 1048576 } } }");
@@ -241,6 +243,7 @@ static void test_object_add_failure_modes(void)
                      " {'id': 'ram1' } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* attempt to create an object with a property of a wrong type */
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
@@ -249,60 +252,70 @@ static void test_object_add_failure_modes(void)
     g_assert_nonnull(resp);
     /* now do it right */
     qmp_assert_error_class(resp, "GenericError");
+
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram', 'id': 'ram1',"
                      " 'props': {'size': 1048576 } } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* delete ram1 object */
     resp = qtest_qmp(qts, "{'execute': 'object-del', 'arguments':"
                      " {'id': 'ram1' } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* attempt to create an object without the id */
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram',"
                      " 'props': {'size': 1048576 } } }");
     g_assert_nonnull(resp);
     qmp_assert_error_class(resp, "GenericError");
+
     /* now do it right */
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram', 'id': 'ram1',"
                      " 'props': {'size': 1048576 } } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* delete ram1 object */
     resp = qtest_qmp(qts, "{'execute': 'object-del', 'arguments':"
                      " {'id': 'ram1' } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* attempt to set a non existing property */
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram', 'id': 'ram1',"
                      " 'props': {'sized': 1048576 } } }");
     g_assert_nonnull(resp);
     qmp_assert_error_class(resp, "GenericError");
+
     /* now do it right */
     resp = qtest_qmp(qts, "{'execute': 'object-add', 'arguments':"
                      " {'qom-type': 'memory-backend-ram', 'id': 'ram1',"
                      " 'props': {'size': 1048576 } } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* delete ram1 object without id */
     resp = qtest_qmp(qts, "{'execute': 'object-del', 'arguments':"
                      " {'ida': 'ram1' } }");
     g_assert_nonnull(resp);
+    qobject_unref(resp);
 
     /* delete ram1 object */
     resp = qtest_qmp(qts, "{'execute': 'object-del', 'arguments':"
                      " {'id': 'ram1' } }");
     g_assert_nonnull(resp);
     g_assert(qdict_haskey(resp, "return"));
+    qobject_unref(resp);
 
     /* delete ram1 object that does not exist anymore*/
     resp = qtest_qmp(qts, "{'execute': 'object-del', 'arguments':"