test-qobject-output-visitor: Wean off UserDefListUnion

The test_visitor_out_list_union_FOO() use simple union
UserDefListUnion to cover lists of builtin types.  Rewrite as
test_visitor_out_list_struct(), using struct ArrayStruct and a lot
less code.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210917143134.412106-14-armbru@redhat.com>

tests/unit/test-qobject-output-visitor.c

@@ -437,289 +437,118 @@ static void test_visitor_out_null(TestOutputVisitorData *data,
     g_assert(qobject_type(nil) == QTYPE_QNULL);
 }
 
-static void init_list_union(UserDefListUnion *cvalue)
+static void test_visitor_out_list_struct(TestOutputVisitorData *data,
+                                         const void *unused)
 {
-    int i;
-    switch (cvalue->type) {
-    case USER_DEF_LIST_UNION_KIND_INTEGER: {
-        intList **tail = &cvalue->u.integer.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
-    }
-    case USER_DEF_LIST_UNION_KIND_S8: {
-        int8List **tail = &cvalue->u.s8.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+    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);
     }
-    case USER_DEF_LIST_UNION_KIND_S16: {
-        int16List **tail = &cvalue->u.s16.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s8, i);
     }
-    case USER_DEF_LIST_UNION_KIND_S32: {
-        int32List **tail = &cvalue->u.s32.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s16, i);
     }
-    case USER_DEF_LIST_UNION_KIND_S64: {
-        int64List **tail = &cvalue->u.s64.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s32, i);
     }
-    case USER_DEF_LIST_UNION_KIND_U8: {
-        uint8List **tail = &cvalue->u.u8.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->s64, i);
     }
-    case USER_DEF_LIST_UNION_KIND_U16: {
-        uint16List **tail = &cvalue->u.u16.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u8, i);
     }
-    case USER_DEF_LIST_UNION_KIND_U32: {
-        uint32List **tail = &cvalue->u.u32.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u16, i);
     }
-    case USER_DEF_LIST_UNION_KIND_U64: {
-        uint64List **tail = &cvalue->u.u64.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, i);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u32, i);
     }
-    case USER_DEF_LIST_UNION_KIND_BOOLEAN: {
-        boolList **tail = &cvalue->u.boolean.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, QEMU_IS_ALIGNED(i, 3));
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->u64, i);
     }
-    case USER_DEF_LIST_UNION_KIND_STRING: {
-        strList **tail = &cvalue->u.string.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, g_strdup_printf("%d", i));
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->number, (double)i / 3);
     }
-    case USER_DEF_LIST_UNION_KIND_NUMBER: {
-        numberList **tail = &cvalue->u.number.data;
-        for (i = 0; i < 32; i++) {
-            QAPI_LIST_APPEND(tail, (double)i / 3);
-        }
-        break;
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->boolean, QEMU_IS_ALIGNED(i, 3));
     }
-    default:
-        g_assert_not_reached();
+
+    for (i = 31; i >= 0; i--) {
+        QAPI_LIST_PREPEND(arrs->string, g_strdup_printf("%d", i));
     }
-}
 
-static void check_list_union(QObject *qobj,
-                             UserDefListUnionKind kind)
-{
-    QDict *qdict;
-    QList *qlist;
-    int i;
+    visit_type_ArrayStruct(data->ov, NULL, &arrs, &error_abort);
 
-    qdict = qobject_to(QDict, qobj);
+    qdict = qobject_to(QDict, visitor_get(data));
     g_assert(qdict);
-    g_assert(qdict_haskey(qdict, "data"));
-    qlist = qlist_copy(qobject_to(QList, qdict_get(qdict, "data")));
-
-    switch (kind) {
-    case USER_DEF_LIST_UNION_KIND_U8:
-    case USER_DEF_LIST_UNION_KIND_U16:
-    case USER_DEF_LIST_UNION_KIND_U32:
-    case USER_DEF_LIST_UNION_KIND_U64:
-        for (i = 0; i < 32; i++) {
-            QObject *tmp;
-            QNum *qvalue;
-            uint64_t val;
-
-            tmp = qlist_peek(qlist);
-            g_assert(tmp);
-            qvalue = qobject_to(QNum, tmp);
-            g_assert(qnum_get_try_uint(qvalue, &val));
-            g_assert_cmpint(val, ==, i);
-            qobject_unref(qlist_pop(qlist));
-        }
-        break;
-
-    case USER_DEF_LIST_UNION_KIND_S8:
-    case USER_DEF_LIST_UNION_KIND_S16:
-    case USER_DEF_LIST_UNION_KIND_S32:
-    case USER_DEF_LIST_UNION_KIND_S64:
-        /*
-         * All integer elements in JSON arrays get stored into QNums
-         * when we convert to QObjects, so we can check them all in
-         * the same fashion, so simply fall through here.
-         */
-    case USER_DEF_LIST_UNION_KIND_INTEGER:
-        for (i = 0; i < 32; i++) {
-            QObject *tmp;
-            QNum *qvalue;
-            int64_t val;
-
-            tmp = qlist_peek(qlist);
-            g_assert(tmp);
-            qvalue = qobject_to(QNum, tmp);
-            g_assert(qnum_get_try_int(qvalue, &val));
-            g_assert_cmpint(val, ==, i);
-            qobject_unref(qlist_pop(qlist));
-        }
-        break;
-    case USER_DEF_LIST_UNION_KIND_BOOLEAN:
-        for (i = 0; i < 32; i++) {
-            QObject *tmp;
-            QBool *qvalue;
-            tmp = qlist_peek(qlist);
-            g_assert(tmp);
-            qvalue = qobject_to(QBool, tmp);
-            g_assert_cmpint(qbool_get_bool(qvalue), ==, i % 3 == 0);
-            qobject_unref(qlist_pop(qlist));
-        }
-        break;
-    case USER_DEF_LIST_UNION_KIND_STRING:
-        for (i = 0; i < 32; i++) {
-            QObject *tmp;
-            QString *qvalue;
-            gchar str[8];
-            tmp = qlist_peek(qlist);
-            g_assert(tmp);
-            qvalue = qobject_to(QString, tmp);
-            sprintf(str, "%d", i);
-            g_assert_cmpstr(qstring_get_str(qvalue), ==, str);
-            qobject_unref(qlist_pop(qlist));
-        }
-        break;
-    case USER_DEF_LIST_UNION_KIND_NUMBER:
-        for (i = 0; i < 32; i++) {
-            QObject *tmp;
-            QNum *qvalue;
-            GString *double_expected = g_string_new("");
-            GString *double_actual = g_string_new("");
-
-            tmp = qlist_peek(qlist);
-            g_assert(tmp);
-            qvalue = qobject_to(QNum, tmp);
-            g_string_printf(double_expected, "%.6f", (double)i / 3);
-            g_string_printf(double_actual, "%.6f", qnum_get_double(qvalue));
-            g_assert_cmpstr(double_actual->str, ==, double_expected->str);
-
-            qobject_unref(qlist_pop(qlist));
-            g_string_free(double_expected, true);
-            g_string_free(double_actual, true);
+
+    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++;
         }
-        break;
-    default:
-        g_assert_not_reached();
     }
-    qobject_unref(qlist);
-}
-
-static void test_list_union(TestOutputVisitorData *data,
-                            const void *unused,
-                            UserDefListUnionKind kind)
-{
-    UserDefListUnion *cvalue = g_new0(UserDefListUnion, 1);
-    QObject *obj;
-
-    cvalue->type = kind;
-    init_list_union(cvalue);
-
-    visit_type_UserDefListUnion(data->ov, NULL, &cvalue, &error_abort);
-
-    obj = visitor_get(data);
-    check_list_union(obj, cvalue->type);
-    qapi_free_UserDefListUnion(cvalue);
-}
-
-static void test_visitor_out_list_union_int(TestOutputVisitorData *data,
-                                            const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_INTEGER);
-}
-
-static void test_visitor_out_list_union_int8(TestOutputVisitorData *data,
-                                             const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_S8);
-}
-
-static void test_visitor_out_list_union_int16(TestOutputVisitorData *data,
-                                              const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_S16);
-}
-
-static void test_visitor_out_list_union_int32(TestOutputVisitorData *data,
-                                              const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_S32);
-}
-
-static void test_visitor_out_list_union_int64(TestOutputVisitorData *data,
-                                              const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_S64);
-}
-
-static void test_visitor_out_list_union_uint8(TestOutputVisitorData *data,
-                                              const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_U8);
-}
-
-static void test_visitor_out_list_union_uint16(TestOutputVisitorData *data,
-                                               const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_U16);
-}
 
-static void test_visitor_out_list_union_uint32(TestOutputVisitorData *data,
-                                               const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_U32);
-}
-
-static void test_visitor_out_list_union_uint64(TestOutputVisitorData *data,
-                                               const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_U64);
-}
+    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++;
+    }
 
-static void test_visitor_out_list_union_bool(TestOutputVisitorData *data,
-                                             const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_BOOLEAN);
-}
+    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++;
+    }
 
-static void test_visitor_out_list_union_str(TestOutputVisitorData *data,
-                                            const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_STRING);
-}
+    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];
 
-static void test_visitor_out_list_union_number(TestOutputVisitorData *data,
-                                               const void *unused)
-{
-    test_list_union(data, unused, USER_DEF_LIST_UNION_KIND_NUMBER);
+        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,
@@ -764,42 +593,8 @@ int main(int argc, char **argv)
                             &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_union/int",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_int);
-    output_visitor_test_add("/visitor/output/list_union/int8",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_int8);
-    output_visitor_test_add("/visitor/output/list_union/int16",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_int16);
-    output_visitor_test_add("/visitor/output/list_union/int32",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_int32);
-    output_visitor_test_add("/visitor/output/list_union/int64",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_int64);
-    output_visitor_test_add("/visitor/output/list_union/uint8",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_uint8);
-    output_visitor_test_add("/visitor/output/list_union/uint16",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_uint16);
-    output_visitor_test_add("/visitor/output/list_union/uint32",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_uint32);
-    output_visitor_test_add("/visitor/output/list_union/uint64",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_uint64);
-    output_visitor_test_add("/visitor/output/list_union/bool",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_bool);
-    output_visitor_test_add("/visitor/output/list_union/string",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_str);
-    output_visitor_test_add("/visitor/output/list_union/number",
-                            &out_visitor_data,
-                            test_visitor_out_list_union_number);
+    output_visitor_test_add("/visitor/output/list_struct",
+                            &out_visitor_data, test_visitor_out_list_struct);
 
     g_test_run();