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, 602 insertions, 0 deletions

diff --git a/tests/unit/test-qobject-output-visitor.c b/tests/unit/test-qobject-output-visitor.c
new file mode 100644
index 000000000..34d67a439
--- /dev/null
+++ b/tests/unit/test-qobject-output-visitor.c
@@ -0,0 +1,602 @@
+/*
+ * QObject Output Visitor unit-tests.
+ *
+ * Copyright (C) 2011-2016 Red Hat Inc.
+ *
+ * Authors:
+ *  Luiz Capitulino <lcapitulino@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qapi/qobject-output-visitor.h"
+#include "test-qapi-visit.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qlist.h"
+#include "qapi/qmp/qnull.h"
+#include "qapi/qmp/qnum.h"
+#include "qapi/qmp/qstring.h"
+
+typedef struct TestOutputVisitorData {
+    Visitor *ov;
+    QObject *obj;
+} TestOutputVisitorData;
+
+static void visitor_output_setup(TestOutputVisitorData *data,
+                                 const void *unused)
+{
+    data->ov = qobject_output_visitor_new(&data->obj);
+    g_assert(data->ov);
+}
+
+static void visitor_output_teardown(TestOutputVisitorData *data,
+                                    const void *unused)
+{
+    visit_free(data->ov);
+    data->ov = NULL;
+    qobject_unref(data->obj);
+    data->obj = NULL;
+}
+
+static QObject *visitor_get(TestOutputVisitorData *data)
+{
+    visit_complete(data->ov, &data->obj);
+    g_assert(data->obj);
+    return data->obj;
+}
+
+static void visitor_reset(TestOutputVisitorData *data)
+{
+    visitor_output_teardown(data, NULL);
+    visitor_output_setup(data, NULL);
+}
+
+static void test_visitor_out_int(TestOutputVisitorData *data,
+                                 const void *unused)
+{
+    int64_t value = -42;
+    int64_t val;
+    QNum *qnum;
+
+    visit_type_int(data->ov, NULL, &value, &error_abort);
+
+    qnum = qobject_to(QNum, visitor_get(data));
+    g_assert(qnum);
+    g_assert(qnum_get_try_int(qnum, &val));
+    g_assert_cmpint(val, ==, value);
+}
+
+static void test_visitor_out_bool(TestOutputVisitorData *data,
+                                  const void *unused)
+{
+    bool value = true;
+    QBool *qbool;
+
+    visit_type_bool(data->ov, NULL, &value, &error_abort);
+
+    qbool = qobject_to(QBool, visitor_get(data));
+    g_assert(qbool);
+    g_assert(qbool_get_bool(qbool) == value);
+}
+
+static void test_visitor_out_number(TestOutputVisitorData *data,
+                                    const void *unused)
+{
+    double value = 3.14;
+    QNum *qnum;
+
+    visit_type_number(data->ov, NULL, &value, &error_abort);
+
+    qnum = qobject_to(QNum, visitor_get(data));
+    g_assert(qnum);
+    g_assert(qnum_get_double(qnum) == value);
+}
+
+static void test_visitor_out_string(TestOutputVisitorData *data,
+                                    const void *unused)
+{
+    char *string = (char *) "Q E M U";
+    QString *qstr;
+
+    visit_type_str(data->ov, NULL, &string, &error_abort);
+
+    qstr = qobject_to(QString, visitor_get(data));
+    g_assert(qstr);
+    g_assert_cmpstr(qstring_get_str(qstr), ==, string);
+}
+
+static void test_visitor_out_no_string(TestOutputVisitorData *data,
+                                       const void *unused)
+{
+    char *string = NULL;
+    QString *qstr;
+
+    /* A null string should return "" */
+    visit_type_str(data->ov, NULL, &string, &error_abort);
+
+    qstr = qobject_to(QString, visitor_get(data));
+    g_assert(qstr);
+    g_assert_cmpstr(qstring_get_str(qstr), ==, "");
+}
+
+static void test_visitor_out_enum(TestOutputVisitorData *data,
+                                  const void *unused)
+{
+    EnumOne i;
+    QString *qstr;
+
+    for (i = 0; i < ENUM_ONE__MAX; i++) {
+        visit_type_EnumOne(data->ov, "unused", &i, &error_abort);
+
+        qstr = qobject_to(QString, visitor_get(data));
+        g_assert(qstr);
+        g_assert_cmpstr(qstring_get_str(qstr), ==, EnumOne_str(i));
+        visitor_reset(data);
+    }
+}
+
+static void test_visitor_out_struct(TestOutputVisitorData *data,
+                                    const void *unused)
+{
+    TestStruct test_struct = { .integer = 42,
+                               .boolean = false,
+                               .string = (char *) "foo"};
+    TestStruct *p = &test_struct;
+    QDict *qdict;
+
+    visit_type_TestStruct(data->ov, NULL, &p, &error_abort);
+
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    g_assert_cmpint(qdict_size(qdict), ==, 3);
+    g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, 42);
+    g_assert_cmpint(qdict_get_bool(qdict, "boolean"), ==, false);
+    g_assert_cmpstr(qdict_get_str(qdict, "string"), ==, "foo");
+}
+
+static void test_visitor_out_struct_nested(TestOutputVisitorData *data,
+                                           const void *unused)
+{
+    int64_t value = 42;
+    UserDefTwo *ud2;
+    QDict *qdict, *dict1, *dict2, *dict3, *userdef;
+    const char *string = "user def string";
+    const char *strings[] = { "forty two", "forty three", "forty four",
+                              "forty five" };
+
+    ud2 = g_malloc0(sizeof(*ud2));
+    ud2->string0 = g_strdup(strings[0]);
+
+    ud2->dict1 = g_malloc0(sizeof(*ud2->dict1));
+    ud2->dict1->string1 = g_strdup(strings[1]);
+
+    ud2->dict1->dict2 = g_malloc0(sizeof(*ud2->dict1->dict2));
+    ud2->dict1->dict2->userdef = g_new0(UserDefOne, 1);
+    ud2->dict1->dict2->userdef->string = g_strdup(string);
+    ud2->dict1->dict2->userdef->integer = value;
+    ud2->dict1->dict2->string = g_strdup(strings[2]);
+
+    ud2->dict1->dict3 = g_malloc0(sizeof(*ud2->dict1->dict3));
+    ud2->dict1->has_dict3 = true;
+    ud2->dict1->dict3->userdef = g_new0(UserDefOne, 1);
+    ud2->dict1->dict3->userdef->string = g_strdup(string);
+    ud2->dict1->dict3->userdef->integer = value;
+    ud2->dict1->dict3->string = g_strdup(strings[3]);
+
+    visit_type_UserDefTwo(data->ov, "unused", &ud2, &error_abort);
+
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    g_assert_cmpint(qdict_size(qdict), ==, 2);
+    g_assert_cmpstr(qdict_get_str(qdict, "string0"), ==, strings[0]);
+
+    dict1 = qdict_get_qdict(qdict, "dict1");
+    g_assert_cmpint(qdict_size(dict1), ==, 3);
+    g_assert_cmpstr(qdict_get_str(dict1, "string1"), ==, strings[1]);
+
+    dict2 = qdict_get_qdict(dict1, "dict2");
+    g_assert_cmpint(qdict_size(dict2), ==, 2);
+    g_assert_cmpstr(qdict_get_str(dict2, "string"), ==, strings[2]);
+    userdef = qdict_get_qdict(dict2, "userdef");
+    g_assert_cmpint(qdict_size(userdef), ==, 2);
+    g_assert_cmpint(qdict_get_int(userdef, "integer"), ==, value);
+    g_assert_cmpstr(qdict_get_str(userdef, "string"), ==, string);
+
+    dict3 = qdict_get_qdict(dict1, "dict3");
+    g_assert_cmpint(qdict_size(dict3), ==, 2);
+    g_assert_cmpstr(qdict_get_str(dict3, "string"), ==, strings[3]);
+    userdef = qdict_get_qdict(dict3, "userdef");
+    g_assert_cmpint(qdict_size(userdef), ==, 2);
+    g_assert_cmpint(qdict_get_int(userdef, "integer"), ==, value);
+    g_assert_cmpstr(qdict_get_str(userdef, "string"), ==, string);
+
+    qapi_free_UserDefTwo(ud2);
+}
+
+static void test_visitor_out_list(TestOutputVisitorData *data,
+                                  const void *unused)
+{
+    const char *value_str = "list value";
+    TestStruct *value;
+    TestStructList *head = NULL;
+    const int max_items = 10;
+    bool value_bool = true;
+    int value_int = 10;
+    QListEntry *entry;
+    QList *qlist;
+    int i;
+
+    /* Build the list in reverse order... */
+    for (i = 0; i < max_items; i++) {
+        value = g_malloc0(sizeof(*value));
+        value->integer = value_int + (max_items - i - 1);
+        value->boolean = value_bool;
+        value->string = g_strdup(value_str);
+
+        QAPI_LIST_PREPEND(head, value);
+    }
+
+    visit_type_TestStructList(data->ov, NULL, &head, &error_abort);
+
+    qlist = qobject_to(QList, visitor_get(data));
+    g_assert(qlist);
+    g_assert(!qlist_empty(qlist));
+
+    /* ...and ensure that the visitor sees it in order */
+    i = 0;
+    QLIST_FOREACH_ENTRY(qlist, entry) {
+        QDict *qdict;
+
+        qdict = qobject_to(QDict, entry->value);
+        g_assert(qdict);
+        g_assert_cmpint(qdict_size(qdict), ==, 3);
+        g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, value_int + i);
+        g_assert_cmpint(qdict_get_bool(qdict, "boolean"), ==, value_bool);
+        g_assert_cmpstr(qdict_get_str(qdict, "string"), ==, value_str);
+        i++;
+    }
+    g_assert_cmpint(i, ==, max_items);
+
+    qapi_free_TestStructList(head);
+}
+
+static void test_visitor_out_list_qapi_free(TestOutputVisitorData *data,
+                                            const void *unused)
+{
+    UserDefTwo *value;
+    UserDefTwoList *head = NULL;
+    const char string[] = "foo bar";
+    int i, max_count = 1024;
+
+    for (i = 0; i < max_count; i++) {
+        value = g_malloc0(sizeof(*value));
+
+        value->string0 = g_strdup(string);
+        value->dict1 = g_new0(UserDefTwoDict, 1);
+        value->dict1->string1 = g_strdup(string);
+        value->dict1->dict2 = g_new0(UserDefTwoDictDict, 1);
+        value->dict1->dict2->userdef = g_new0(UserDefOne, 1);
+        value->dict1->dict2->userdef->string = g_strdup(string);
+        value->dict1->dict2->userdef->integer = 42;
+        value->dict1->dict2->string = g_strdup(string);
+        value->dict1->has_dict3 = false;
+
+        QAPI_LIST_PREPEND(head, value);
+    }
+
+    qapi_free_UserDefTwoList(head);
+}
+
+static void test_visitor_out_any(TestOutputVisitorData *data,
+                                 const void *unused)
+{
+    QObject *qobj;
+    QNum *qnum;
+    QBool *qbool;
+    QString *qstring;
+    QDict *qdict;
+    int64_t val;
+
+    qobj = QOBJECT(qnum_from_int(-42));
+    visit_type_any(data->ov, NULL, &qobj, &error_abort);
+    qnum = qobject_to(QNum, visitor_get(data));
+    g_assert(qnum);
+    g_assert(qnum_get_try_int(qnum, &val));
+    g_assert_cmpint(val, ==, -42);
+    qobject_unref(qobj);
+
+    visitor_reset(data);
+    qdict = qdict_new();
+    qdict_put_int(qdict, "integer", -42);
+    qdict_put_bool(qdict, "boolean", true);
+    qdict_put_str(qdict, "string", "foo");
+    qobj = QOBJECT(qdict);
+    visit_type_any(data->ov, NULL, &qobj, &error_abort);
+    qobject_unref(qobj);
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    qnum = qobject_to(QNum, qdict_get(qdict, "integer"));
+    g_assert(qnum);
+    g_assert(qnum_get_try_int(qnum, &val));
+    g_assert_cmpint(val, ==, -42);
+    qbool = qobject_to(QBool, qdict_get(qdict, "boolean"));
+    g_assert(qbool);
+    g_assert(qbool_get_bool(qbool) == true);
+    qstring = qobject_to(QString, qdict_get(qdict, "string"));
+    g_assert(qstring);
+    g_assert_cmpstr(qstring_get_str(qstring), ==, "foo");
+}
+
+static void test_visitor_out_union_flat(TestOutputVisitorData *data,
+                                        const void *unused)
+{
+    QDict *qdict;
+
+    UserDefFlatUnion *tmp = g_malloc0(sizeof(UserDefFlatUnion));
+    tmp->enum1 = ENUM_ONE_VALUE1;
+    tmp->string = g_strdup("str");
+    tmp->integer = 41;
+    tmp->u.value1.boolean = true;
+
+    visit_type_UserDefFlatUnion(data->ov, NULL, &tmp, &error_abort);
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    g_assert_cmpstr(qdict_get_str(qdict, "enum1"), ==, "value1");
+    g_assert_cmpstr(qdict_get_str(qdict, "string"), ==, "str");
+    g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, 41);
+    g_assert_cmpint(qdict_get_bool(qdict, "boolean"), ==, true);
+
+    qapi_free_UserDefFlatUnion(tmp);
+}
+
+static void test_visitor_out_alternate(TestOutputVisitorData *data,
+                                       const void *unused)
+{
+    UserDefAlternate *tmp;
+    QNum *qnum;
+    QString *qstr;
+    QDict *qdict;
+    int64_t val;
+
+    tmp = g_new0(UserDefAlternate, 1);
+    tmp->type = QTYPE_QNUM;
+    tmp->u.i = 42;
+
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
+    qnum = qobject_to(QNum, visitor_get(data));
+    g_assert(qnum);
+    g_assert(qnum_get_try_int(qnum, &val));
+    g_assert_cmpint(val, ==, 42);
+
+    qapi_free_UserDefAlternate(tmp);
+
+    visitor_reset(data);
+    tmp = g_new0(UserDefAlternate, 1);
+    tmp->type = QTYPE_QSTRING;
+    tmp->u.e = ENUM_ONE_VALUE1;
+
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
+    qstr = qobject_to(QString, visitor_get(data));
+    g_assert(qstr);
+    g_assert_cmpstr(qstring_get_str(qstr), ==, "value1");
+
+    qapi_free_UserDefAlternate(tmp);
+
+    visitor_reset(data);
+    tmp = g_new0(UserDefAlternate, 1);
+    tmp->type = QTYPE_QNULL;
+    tmp->u.n = qnull();
+
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
+    g_assert_cmpint(qobject_type(visitor_get(data)), ==, QTYPE_QNULL);
+
+    qapi_free_UserDefAlternate(tmp);
+
+    visitor_reset(data);
+    tmp = g_new0(UserDefAlternate, 1);
+    tmp->type = QTYPE_QDICT;
+    tmp->u.udfu.integer = 1;
+    tmp->u.udfu.string = g_strdup("str");
+    tmp->u.udfu.enum1 = ENUM_ONE_VALUE1;
+    tmp->u.udfu.u.value1.boolean = true;
+
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    g_assert_cmpint(qdict_size(qdict), ==, 4);
+    g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, 1);
+    g_assert_cmpstr(qdict_get_str(qdict, "string"), ==, "str");
+    g_assert_cmpstr(qdict_get_str(qdict, "enum1"), ==, "value1");
+    g_assert_cmpint(qdict_get_bool(qdict, "boolean"), ==, true);
+
+    qapi_free_UserDefAlternate(tmp);
+}
+
+static void test_visitor_out_null(TestOutputVisitorData *data,
+                                  const void *unused)
+{
+    QNull *null = NULL;
+    QDict *qdict;
+    QObject *nil;
+
+    visit_start_struct(data->ov, NULL, NULL, 0, &error_abort);
+    visit_type_null(data->ov, "a", &null, &error_abort);
+    visit_check_struct(data->ov, &error_abort);
+    visit_end_struct(data->ov, NULL);
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+    g_assert_cmpint(qdict_size(qdict), ==, 1);
+    nil = qdict_get(qdict, "a");
+    g_assert(nil);
+    g_assert(qobject_type(nil) == QTYPE_QNULL);
+}
+
+static void test_visitor_out_list_struct(TestOutputVisitorData *data,
+                                         const void *unused)
+{
+    const char *int_member[] = {
+        "integer", "s8", "s16", "s32", "s64", "u8", "u16", "u32", "u64" };
+    g_autoptr(ArrayStruct) arrs = g_new0(ArrayStruct, 1);
+    int i, j;
+    QDict *qdict;
+    QList *qlist;
+    QListEntry *e;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->integer, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s8, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s16, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s32, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s64, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u8, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u16, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u32, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u64, i);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->number, (double)i / 3);
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->boolean, QEMU_IS_ALIGNED(i, 3));
+    }
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->string, g_strdup_printf("%d", i));
+    }
+
+    visit_type_ArrayStruct(data->ov, NULL, &arrs, &error_abort);
+
+    qdict = qobject_to(QDict, visitor_get(data));
+    g_assert(qdict);
+
+    for (i = 0; i < G_N_ELEMENTS(int_member); i++) {
+        qlist = qdict_get_qlist(qdict, int_member[i]);
+        g_assert(qlist);
+        j = 0;
+        QLIST_FOREACH_ENTRY(qlist, e) {
+            QNum *qvalue = qobject_to(QNum, qlist_entry_obj(e));
+            g_assert(qvalue);
+            g_assert_cmpint(qnum_get_int(qvalue), ==, j);
+            j++;
+        }
+    }
+
+    qlist = qdict_get_qlist(qdict, "number");
+    g_assert(qlist);
+    i = 0;
+    QLIST_FOREACH_ENTRY(qlist, e) {
+        QNum *qvalue = qobject_to(QNum, qlist_entry_obj(e));
+        char expected[32], actual[32];
+
+        g_assert(qvalue);
+        sprintf(expected, "%.6f", (double)i / 3);
+        sprintf(actual, "%.6f", qnum_get_double(qvalue));
+        g_assert_cmpstr(actual, ==, expected);
+        i++;
+    }
+
+    qlist = qdict_get_qlist(qdict, "boolean");
+    g_assert(qlist);
+    i = 0;
+    QLIST_FOREACH_ENTRY(qlist, e) {
+        QBool *qvalue = qobject_to(QBool, qlist_entry_obj(e));
+        g_assert(qvalue);
+        g_assert_cmpint(qbool_get_bool(qvalue), ==, i % 3 == 0);
+        i++;
+    }
+
+    qlist = qdict_get_qlist(qdict, "string");
+    g_assert(qlist);
+    i = 0;
+    QLIST_FOREACH_ENTRY(qlist, e) {
+        QString *qvalue = qobject_to(QString, qlist_entry_obj(e));
+        char expected[32];
+
+        g_assert(qvalue);
+        sprintf(expected, "%d", i);
+        g_assert_cmpstr(qstring_get_str(qvalue), ==, expected);
+        i++;
+    }
+}
+
+static void output_visitor_test_add(const char *testpath,
+                                    TestOutputVisitorData *data,
+                                    void (*test_func)(TestOutputVisitorData *data, const void *user_data))
+{
+    g_test_add(testpath, TestOutputVisitorData, data, visitor_output_setup,
+               test_func, visitor_output_teardown);
+}
+
+int main(int argc, char **argv)
+{
+    TestOutputVisitorData out_visitor_data;
+
+    g_test_init(&argc, &argv, NULL);
+
+    output_visitor_test_add("/visitor/output/int",
+                            &out_visitor_data, test_visitor_out_int);
+    output_visitor_test_add("/visitor/output/bool",
+                            &out_visitor_data, test_visitor_out_bool);
+    output_visitor_test_add("/visitor/output/number",
+                            &out_visitor_data, test_visitor_out_number);
+    output_visitor_test_add("/visitor/output/string",
+                            &out_visitor_data, test_visitor_out_string);
+    output_visitor_test_add("/visitor/output/no-string",
+                            &out_visitor_data, test_visitor_out_no_string);
+    output_visitor_test_add("/visitor/output/enum",
+                            &out_visitor_data, test_visitor_out_enum);
+    output_visitor_test_add("/visitor/output/struct",
+                            &out_visitor_data, test_visitor_out_struct);
+    output_visitor_test_add("/visitor/output/struct-nested",
+                            &out_visitor_data, test_visitor_out_struct_nested);
+    output_visitor_test_add("/visitor/output/list",
+                            &out_visitor_data, test_visitor_out_list);
+    output_visitor_test_add("/visitor/output/any",
+                            &out_visitor_data, test_visitor_out_any);
+    output_visitor_test_add("/visitor/output/list-qapi-free",
+                            &out_visitor_data, test_visitor_out_list_qapi_free);
+    output_visitor_test_add("/visitor/output/union-flat",
+                            &out_visitor_data, test_visitor_out_union_flat);
+    output_visitor_test_add("/visitor/output/alternate",
+                            &out_visitor_data, test_visitor_out_alternate);
+    output_visitor_test_add("/visitor/output/null",
+                            &out_visitor_data, test_visitor_out_null);
+    output_visitor_test_add("/visitor/output/list_struct",
+                            &out_visitor_data, test_visitor_out_list_struct);
+
+    g_test_run();
+
+    return 0;
+}