Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 428 insertions, 0 deletions

diff --git a/tests/unit/test-qmp-cmds.c b/tests/unit/test-qmp-cmds.c
new file mode 100644
index 000000000..faa858624
--- /dev/null
+++ b/tests/unit/test-qmp-cmds.c
@@ -0,0 +1,428 @@
+#include "qemu/osdep.h"
+#include "qapi/compat-policy.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qjson.h"
+#include "qapi/qmp/qnum.h"
+#include "qapi/qmp/qstring.h"
+#include "qapi/error.h"
+#include "qapi/qobject-input-visitor.h"
+#include "tests/test-qapi-types.h"
+#include "tests/test-qapi-visit.h"
+#include "test-qapi-commands.h"
+#include "test-qapi-init-commands.h"
+
+static QmpCommandList qmp_commands;
+
+UserDefThree *qmp_test_cmd_return_def_three(Error **errp)
+{
+    return NULL;
+}
+
+void qmp_user_def_cmd(Error **errp)
+{
+}
+
+void qmp_test_flags_command(Error **errp)
+{
+}
+
+void qmp_cmd_success_response(Error **errp)
+{
+}
+
+void qmp_coroutine_cmd(Error **errp)
+{
+}
+
+Empty2 *qmp_user_def_cmd0(Error **errp)
+{
+    return g_new0(Empty2, 1);
+}
+
+void qmp_user_def_cmd1(UserDefOne * ud1, Error **errp)
+{
+}
+
+FeatureStruct1 *qmp_test_features0(bool has_fs0, FeatureStruct0 *fs0,
+                                   bool has_fs1, FeatureStruct1 *fs1,
+                                   bool has_fs2, FeatureStruct2 *fs2,
+                                   bool has_fs3, FeatureStruct3 *fs3,
+                                   bool has_fs4, FeatureStruct4 *fs4,
+                                   bool has_cfs1, CondFeatureStruct1 *cfs1,
+                                   bool has_cfs2, CondFeatureStruct2 *cfs2,
+                                   bool has_cfs3, CondFeatureStruct3 *cfs3,
+                                   bool has_cfs4, CondFeatureStruct4 *cfs4,
+                                   Error **errp)
+{
+    return g_new0(FeatureStruct1, 1);
+}
+
+void qmp_test_command_features1(Error **errp)
+{
+}
+
+void qmp_test_command_features3(Error **errp)
+{
+}
+
+void qmp_test_command_cond_features1(Error **errp)
+{
+}
+
+void qmp_test_command_cond_features2(Error **errp)
+{
+}
+
+void qmp_test_command_cond_features3(Error **errp)
+{
+}
+
+UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
+                              bool has_udb1, UserDefOne *ud1b,
+                              Error **errp)
+{
+    UserDefTwo *ret;
+    UserDefOne *ud1c = g_malloc0(sizeof(UserDefOne));
+    UserDefOne *ud1d = g_malloc0(sizeof(UserDefOne));
+
+    ud1c->string = strdup(ud1a->string);
+    ud1c->integer = ud1a->integer;
+    ud1d->string = strdup(has_udb1 ? ud1b->string : "blah0");
+    ud1d->integer = has_udb1 ? ud1b->integer : 0;
+
+    ret = g_new0(UserDefTwo, 1);
+    ret->string0 = strdup("blah1");
+    ret->dict1 = g_new0(UserDefTwoDict, 1);
+    ret->dict1->string1 = strdup("blah2");
+    ret->dict1->dict2 = g_new0(UserDefTwoDictDict, 1);
+    ret->dict1->dict2->userdef = ud1c;
+    ret->dict1->dict2->string = strdup("blah3");
+    ret->dict1->dict3 = g_new0(UserDefTwoDictDict, 1);
+    ret->dict1->has_dict3 = true;
+    ret->dict1->dict3->userdef = ud1d;
+    ret->dict1->dict3->string = strdup("blah4");
+
+    return ret;
+}
+
+int64_t qmp_guest_get_time(int64_t a, bool has_b, int64_t b, Error **errp)
+{
+    return a + (has_b ? b : 0);
+}
+
+QObject *qmp_guest_sync(QObject *arg, Error **errp)
+{
+    return arg;
+}
+
+void qmp_boxed_struct(UserDefZero *arg, Error **errp)
+{
+}
+
+void qmp_boxed_union(UserDefFlatUnion *arg, Error **errp)
+{
+}
+
+void qmp_boxed_empty(Empty1 *arg, Error **errp)
+{
+}
+
+void qmp___org_qemu_x_command(__org_qemu_x_EnumList *a,
+                              __org_qemu_x_StructList *b,
+                              __org_qemu_x_Union *c,
+                              __org_qemu_x_Alt *d,
+                              Error **errp)
+{
+    /* Also test that 'wchar-t' was munged to 'q_wchar_t' */
+    if (b && b->value && !b->value->has_q_wchar_t) {
+        b->value->q_wchar_t = 1;
+    }
+}
+
+
+static QObject *do_qmp_dispatch(bool allow_oob, const char *template, ...)
+{
+    va_list ap;
+    QDict *req, *resp;
+    QObject *ret;
+
+    va_start(ap, template);
+    req = qdict_from_vjsonf_nofail(template, ap);
+    va_end(ap);
+
+    resp = qmp_dispatch(&qmp_commands, QOBJECT(req), allow_oob, NULL);
+    g_assert(resp);
+    ret = qdict_get(resp, "return");
+    g_assert(ret);
+    g_assert(qdict_size(resp) == 1);
+
+    qobject_ref(ret);
+    qobject_unref(resp);
+    qobject_unref(req);
+    return ret;
+}
+
+static void do_qmp_dispatch_error(bool allow_oob, ErrorClass cls,
+                                  const char *template, ...)
+{
+    va_list ap;
+    QDict *req, *resp;
+    QDict *error;
+
+    va_start(ap, template);
+    req = qdict_from_vjsonf_nofail(template, ap);
+    va_end(ap);
+
+    resp = qmp_dispatch(&qmp_commands, QOBJECT(req), allow_oob, NULL);
+    g_assert(resp);
+    error = qdict_get_qdict(resp, "error");
+    g_assert(error);
+    g_assert_cmpstr(qdict_get_try_str(error, "class"),
+                    ==, QapiErrorClass_str(cls));
+    g_assert(qdict_get_try_str(error, "desc"));
+    g_assert(qdict_size(error) == 2);
+    g_assert(qdict_size(resp) == 1);
+
+    qobject_unref(resp);
+    qobject_unref(req);
+}
+
+/* test commands with no input and no return value */
+static void test_dispatch_cmd(void)
+{
+    QDict *ret;
+
+    ret = qobject_to(QDict,
+                     do_qmp_dispatch(false,
+                                     "{ 'execute': 'user-def-cmd' }"));
+    assert(ret && qdict_size(ret) == 0);
+    qobject_unref(ret);
+}
+
+static void test_dispatch_cmd_oob(void)
+{
+    QDict *ret;
+
+    ret = qobject_to(QDict,
+                     do_qmp_dispatch(true,
+                                     "{ 'exec-oob': 'test-flags-command' }"));
+    assert(ret && qdict_size(ret) == 0);
+    qobject_unref(ret);
+}
+
+/* test commands that return an error due to invalid parameters */
+static void test_dispatch_cmd_failure(void)
+{
+    /* missing arguments */
+    do_qmp_dispatch_error(false, ERROR_CLASS_GENERIC_ERROR,
+                          "{ 'execute': 'user-def-cmd2' }");
+
+    /* extra arguments */
+    do_qmp_dispatch_error(false, ERROR_CLASS_GENERIC_ERROR,
+                          "{ 'execute': 'user-def-cmd',"
+                          " 'arguments': { 'a': 66 } }");
+}
+
+static void test_dispatch_cmd_success_response(void)
+{
+    QDict *req = qdict_new();
+    QDict *resp;
+
+    qdict_put_str(req, "execute", "cmd-success-response");
+    resp = qmp_dispatch(&qmp_commands, QOBJECT(req), false, NULL);
+    g_assert_null(resp);
+    qobject_unref(req);
+}
+
+/* test commands that involve both input parameters and return values */
+static void test_dispatch_cmd_io(void)
+{
+    QDict *ret, *ret_dict, *ret_dict_dict, *ret_dict_dict_userdef;
+    QDict *ret_dict_dict2, *ret_dict_dict2_userdef;
+    QNum *ret3;
+    int64_t val;
+
+    ret = qobject_to(QDict, do_qmp_dispatch(false,
+        "{ 'execute': 'user-def-cmd2', 'arguments': {"
+        " 'ud1a': { 'integer': 42, 'string': 'hello' },"
+        " 'ud1b': { 'integer': 422, 'string': 'hello2' } } }"));
+
+    assert(!strcmp(qdict_get_str(ret, "string0"), "blah1"));
+    ret_dict = qdict_get_qdict(ret, "dict1");
+    assert(!strcmp(qdict_get_str(ret_dict, "string1"), "blah2"));
+    ret_dict_dict = qdict_get_qdict(ret_dict, "dict2");
+    ret_dict_dict_userdef = qdict_get_qdict(ret_dict_dict, "userdef");
+    assert(qdict_get_int(ret_dict_dict_userdef, "integer") == 42);
+    assert(!strcmp(qdict_get_str(ret_dict_dict_userdef, "string"), "hello"));
+    assert(!strcmp(qdict_get_str(ret_dict_dict, "string"), "blah3"));
+    ret_dict_dict2 = qdict_get_qdict(ret_dict, "dict3");
+    ret_dict_dict2_userdef = qdict_get_qdict(ret_dict_dict2, "userdef");
+    assert(qdict_get_int(ret_dict_dict2_userdef, "integer") == 422);
+    assert(!strcmp(qdict_get_str(ret_dict_dict2_userdef, "string"), "hello2"));
+    assert(!strcmp(qdict_get_str(ret_dict_dict2, "string"), "blah4"));
+    qobject_unref(ret);
+
+    ret3 = qobject_to(QNum, do_qmp_dispatch(false,
+        "{ 'execute': 'guest-get-time', 'arguments': { 'a': 66 } }"));
+    g_assert(qnum_get_try_int(ret3, &val));
+    g_assert_cmpint(val, ==, 66);
+    qobject_unref(ret3);
+}
+
+static void test_dispatch_cmd_deprecated(void)
+{
+    const char *cmd = "{ 'execute': 'test-command-features1' }";
+    QDict *ret;
+
+    memset(&compat_policy, 0, sizeof(compat_policy));
+
+    /* accept */
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 0);
+    qobject_unref(ret);
+
+    compat_policy.has_deprecated_input = true;
+    compat_policy.deprecated_input = COMPAT_POLICY_INPUT_ACCEPT;
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 0);
+    qobject_unref(ret);
+
+    compat_policy.deprecated_input = COMPAT_POLICY_INPUT_REJECT;
+    do_qmp_dispatch_error(false, ERROR_CLASS_COMMAND_NOT_FOUND, cmd);
+}
+
+static void test_dispatch_cmd_arg_deprecated(void)
+{
+    const char *cmd = "{ 'execute': 'test-features0',"
+        " 'arguments': { 'fs1': { 'foo': 42 } } }";
+    QDict *ret;
+
+    memset(&compat_policy, 0, sizeof(compat_policy));
+
+    /* accept */
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 1);
+    qobject_unref(ret);
+
+    compat_policy.has_deprecated_input = true;
+    compat_policy.deprecated_input = COMPAT_POLICY_INPUT_ACCEPT;
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 1);
+    qobject_unref(ret);
+
+    compat_policy.deprecated_input = COMPAT_POLICY_INPUT_REJECT;
+    do_qmp_dispatch_error(false, ERROR_CLASS_GENERIC_ERROR, cmd);
+}
+
+static void test_dispatch_cmd_ret_deprecated(void)
+{
+    const char *cmd = "{ 'execute': 'test-features0' }";
+    QDict *ret;
+
+    memset(&compat_policy, 0, sizeof(compat_policy));
+
+    /* default accept */
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 1);
+    qobject_unref(ret);
+
+    compat_policy.has_deprecated_output = true;
+    compat_policy.deprecated_output = COMPAT_POLICY_OUTPUT_ACCEPT;
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 1);
+    qobject_unref(ret);
+
+    compat_policy.deprecated_output = COMPAT_POLICY_OUTPUT_HIDE;
+    ret = qobject_to(QDict, do_qmp_dispatch(false, cmd));
+    assert(ret && qdict_size(ret) == 0);
+    qobject_unref(ret);
+}
+
+/* test generated dealloc functions for generated types */
+static void test_dealloc_types(void)
+{
+    UserDefOne *ud1test, *ud1a, *ud1b;
+    UserDefOneList *ud1list;
+
+    ud1test = g_malloc0(sizeof(UserDefOne));
+    ud1test->integer = 42;
+    ud1test->string = g_strdup("hi there 42");
+
+    qapi_free_UserDefOne(ud1test);
+
+    ud1a = g_malloc0(sizeof(UserDefOne));
+    ud1a->integer = 43;
+    ud1a->string = g_strdup("hi there 43");
+
+    ud1b = g_malloc0(sizeof(UserDefOne));
+    ud1b->integer = 44;
+    ud1b->string = g_strdup("hi there 44");
+
+    ud1list = g_malloc0(sizeof(UserDefOneList));
+    ud1list->value = ud1a;
+    ud1list->next = g_malloc0(sizeof(UserDefOneList));
+    ud1list->next->value = ud1b;
+
+    qapi_free_UserDefOneList(ud1list);
+}
+
+/* test generated deallocation on an object whose construction was prematurely
+ * terminated due to an error */
+static void test_dealloc_partial(void)
+{
+    static const char text[] = "don't leak me";
+
+    UserDefTwo *ud2 = NULL;
+    Error *err = NULL;
+
+    /* create partial object */
+    {
+        QDict *ud2_dict;
+        Visitor *v;
+
+        ud2_dict = qdict_new();
+        qdict_put_str(ud2_dict, "string0", text);
+
+        v = qobject_input_visitor_new(QOBJECT(ud2_dict));
+        visit_type_UserDefTwo(v, NULL, &ud2, &err);
+        visit_free(v);
+        qobject_unref(ud2_dict);
+    }
+
+    /* verify that visit_type_XXX() cleans up properly on error */
+    error_free_or_abort(&err);
+    assert(!ud2);
+
+    /* Manually create a partial object, leaving ud2->dict1 at NULL */
+    ud2 = g_new0(UserDefTwo, 1);
+    ud2->string0 = g_strdup(text);
+
+    /* tear down partial object */
+    qapi_free_UserDefTwo(ud2);
+}
+
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+
+    g_test_add_func("/qmp/dispatch_cmd", test_dispatch_cmd);
+    g_test_add_func("/qmp/dispatch_cmd_oob", test_dispatch_cmd_oob);
+    g_test_add_func("/qmp/dispatch_cmd_failure", test_dispatch_cmd_failure);
+    g_test_add_func("/qmp/dispatch_cmd_io", test_dispatch_cmd_io);
+    g_test_add_func("/qmp/dispatch_cmd_success_response",
+                    test_dispatch_cmd_success_response);
+    g_test_add_func("/qmp/dispatch_cmd_deprecated",
+                    test_dispatch_cmd_deprecated);
+    g_test_add_func("/qmp/dispatch_cmd_arg_deprecated",
+                    test_dispatch_cmd_arg_deprecated);
+    g_test_add_func("/qmp/dispatch_cmd_ret_deprecated",
+                    test_dispatch_cmd_ret_deprecated);
+    g_test_add_func("/qmp/dealloc_types", test_dealloc_types);
+    g_test_add_func("/qmp/dealloc_partial", test_dealloc_partial);
+
+    test_qmp_init_marshal(&qmp_commands);
+    g_test_run();
+
+    return 0;
+}