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qemu/tests/test-keyval.c
Markus Armbruster 0b2c1beea4 keyval: Support lists 
Additionally permit non-negative integers as key components.  A
dictionary's keys must either be all integers or none.  If all keys
are integers, convert the dictionary to a list.  The set of keys must
be [0,N].

Examples:

* list.1=goner,list.0=null,list.1=eins,list.2=zwei
  is equivalent to JSON [ "null", "eins", "zwei" ]

* a.b.c=1,a.b.0=2
  is inconsistent: a.b.c clashes with a.b.0

* list.0=null,list.2=eins,list.2=zwei
  has a hole: list.1 is missing

Similar design flaw as for objects: there is no way to denote an empty
list.  While interpreting "key absent" as empty list seems natural
(removing a list member from the input string works when there are
multiple ones, so why not when there's just one), it doesn't work:
"key absent" already means "optional list absent", which isn't the
same as "empty list present".

Update the keyval object visitor to use this a.0 syntax in error
messages rather than the usual a[0].

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1488317230-26248-25-git-send-email-armbru@redhat.com>
[Off-by-one fix squashed in, as per Kevin's review]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07 16:07:48 +01:00

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/*
* Unit tests for parsing of KEY=VALUE,... strings
*
* Copyright (C) 2017 Red Hat Inc.
*
* Authors:
* Markus Armbruster <armbru@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 "qapi/error.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/cutils.h"
#include "qemu/option.h"
static void test_keyval_parse(void)
{
Error *err = NULL;
QDict *qdict, *sub_qdict;
char long_key[129];
char *params;
/* Nothing */
qdict = keyval_parse("", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 0);
QDECREF(qdict);
/* Empty key (qemu_opts_parse() accepts this) */
qdict = keyval_parse("=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Empty key fragment */
qdict = keyval_parse(".", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("key.", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Invalid non-empty key (qemu_opts_parse() doesn't care) */
qdict = keyval_parse("7up=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Overlong key */
memset(long_key, 'a', 127);
long_key[127] = 'z';
long_key[128] = 0;
params = g_strdup_printf("k.%s=v", long_key);
qdict = keyval_parse(params + 2, NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Overlong key fragment */
qdict = keyval_parse(params, NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
g_free(params);
/* Long key (qemu_opts_parse() accepts and truncates silently) */
params = g_strdup_printf("k.%s=v", long_key + 1);
qdict = keyval_parse(params + 2, NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, long_key + 1), ==, "v");
QDECREF(qdict);
/* Long key fragment */
qdict = keyval_parse(params, NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
sub_qdict = qdict_get_qdict(qdict, "k");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, long_key + 1), ==, "v");
QDECREF(qdict);
g_free(params);
/* Crap after valid key */
qdict = keyval_parse("key[0]=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Multiple keys, last one wins */
qdict = keyval_parse("a=1,b=2,,x,a=3", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 2);
g_assert_cmpstr(qdict_get_try_str(qdict, "a"), ==, "3");
g_assert_cmpstr(qdict_get_try_str(qdict, "b"), ==, "2,x");
QDECREF(qdict);
/* Even when it doesn't in qemu_opts_parse() */
qdict = keyval_parse("id=foo,id=bar", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "id"), ==, "bar");
QDECREF(qdict);
/* Dotted keys */
qdict = keyval_parse("a.b.c=1,a.b.c=2,d=3", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 2);
sub_qdict = qdict_get_qdict(qdict, "a");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
sub_qdict = qdict_get_qdict(sub_qdict, "b");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, "c"), ==, "2");
g_assert_cmpstr(qdict_get_try_str(qdict, "d"), ==, "3");
QDECREF(qdict);
/* Inconsistent dotted keys */
qdict = keyval_parse("a.b=1,a=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("a.b=1,a.b.c=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Trailing comma is ignored */
qdict = keyval_parse("x=y,", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "x"), ==, "y");
QDECREF(qdict);
/* Except when it isn't */
qdict = keyval_parse(",", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Value containing ,id= not misinterpreted as qemu_opts_parse() does */
qdict = keyval_parse("x=,,id=bar", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "x"), ==, ",id=bar");
QDECREF(qdict);
/* Anti-social ID is left to caller (qemu_opts_parse() rejects it) */
qdict = keyval_parse("id=666", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "id"), ==, "666");
QDECREF(qdict);
/* Implied value not supported (unlike qemu_opts_parse()) */
qdict = keyval_parse("an,noaus,noaus=", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Implied value, key "no" (qemu_opts_parse(): negated empty key) */
qdict = keyval_parse("no", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Implied key */
qdict = keyval_parse("an,aus=off,noaus=", "implied", &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 3);
g_assert_cmpstr(qdict_get_try_str(qdict, "implied"), ==, "an");
g_assert_cmpstr(qdict_get_try_str(qdict, "aus"), ==, "off");
g_assert_cmpstr(qdict_get_try_str(qdict, "noaus"), ==, "");
QDECREF(qdict);
/* Implied dotted key */
qdict = keyval_parse("val", "eins.zwei", &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
sub_qdict = qdict_get_qdict(qdict, "eins");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, "zwei"), ==, "val");
QDECREF(qdict);
/* Implied key with empty value (qemu_opts_parse() accepts this) */
qdict = keyval_parse(",", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Likewise (qemu_opts_parse(): implied key with comma value) */
qdict = keyval_parse(",,,a=1", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Empty key is not an implied key */
qdict = keyval_parse("=val", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
}
static void check_list012(QList *qlist)
{
static const char *expected[] = { "null", "eins", "zwei" };
int i;
QString *qstr;
g_assert(qlist);
for (i = 0; i < ARRAY_SIZE(expected); i++) {
qstr = qobject_to_qstring(qlist_pop(qlist));
g_assert(qstr);
g_assert_cmpstr(qstring_get_str(qstr), ==, expected[i]);
QDECREF(qstr);
}
g_assert(qlist_empty(qlist));
}
static void test_keyval_parse_list(void)
{
Error *err = NULL;
QDict *qdict, *sub_qdict;
/* Root can't be a list */
qdict = keyval_parse("0=1", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* List elements need not be in order */
qdict = keyval_parse("list.0=null,list.2=zwei,list.1=eins",
NULL, &error_abort);
g_assert_cmpint(qdict_size(qdict), ==, 1);
check_list012(qdict_get_qlist(qdict, "list"));
QDECREF(qdict);
/* Multiple indexes, last one wins */
qdict = keyval_parse("list.1=goner,list.0=null,list.1=eins,list.2=zwei",
NULL, &error_abort);
g_assert_cmpint(qdict_size(qdict), ==, 1);
check_list012(qdict_get_qlist(qdict, "list"));
QDECREF(qdict);
/* List at deeper nesting */
qdict = keyval_parse("a.list.1=eins,a.list.0=null,a.list.2=zwei",
NULL, &error_abort);
g_assert_cmpint(qdict_size(qdict), ==, 1);
sub_qdict = qdict_get_qdict(qdict, "a");
g_assert_cmpint(qdict_size(sub_qdict), ==, 1);
check_list012(qdict_get_qlist(sub_qdict, "list"));
QDECREF(qdict);
/* Inconsistent dotted keys: both list and dictionary */
qdict = keyval_parse("a.b.c=1,a.b.0=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("a.0.c=1,a.b.c=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Missing list indexes */
qdict = keyval_parse("list.2=lonely", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("list.0=null,list.2=eins,list.02=zwei", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
}
static void test_keyval_visit_bool(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
bool b;
qdict = keyval_parse("bool1=on,bool2=off", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_bool(v, "bool1", &b, &error_abort);
g_assert(b);
visit_type_bool(v, "bool2", &b, &error_abort);
g_assert(!b);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
qdict = keyval_parse("bool1=offer", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_bool(v, "bool1", &b, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_number(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
uint64_t u;
/* Lower limit zero */
qdict = keyval_parse("number1=0", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmpuint(u, ==, 0);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Upper limit 2^64-1 */
qdict = keyval_parse("number1=18446744073709551615,number2=-1",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmphex(u, ==, UINT64_MAX);
visit_type_uint64(v, "number2", &u, &error_abort);
g_assert_cmphex(u, ==, UINT64_MAX);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Above upper limit */
qdict = keyval_parse("number1=18446744073709551616",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Below lower limit */
qdict = keyval_parse("number1=-18446744073709551616",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Hex and octal */
qdict = keyval_parse("number1=0x2a,number2=052",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmpuint(u, ==, 42);
visit_type_uint64(v, "number2", &u, &error_abort);
g_assert_cmpuint(u, ==, 42);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Trailing crap */
qdict = keyval_parse("number1=3.14,number2=08",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_type_uint64(v, "number2", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_size(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
uint64_t sz;
/* Lower limit zero */
qdict = keyval_parse("sz1=0", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 0);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Note: precision is 53 bits since we're parsing with strtod() */
/* Around limit of precision: 2^53-1, 2^53, 2^53+1 */
qdict = keyval_parse("sz1=9007199254740991,"
"sz2=9007199254740992,"
"sz3=9007199254740993",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x1fffffffffffff);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x20000000000000);
visit_type_size(v, "sz3", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x20000000000000);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Close to signed upper limit 0x7ffffffffffffc00 (53 msbs set) */
qdict = keyval_parse("sz1=9223372036854774784," /* 7ffffffffffffc00 */
"sz2=9223372036854775295", /* 7ffffffffffffdff */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x7ffffffffffffc00);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x7ffffffffffffc00);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Close to actual upper limit 0xfffffffffffff800 (53 msbs set) */
qdict = keyval_parse("sz1=18446744073709549568," /* fffffffffffff800 */
"sz2=18446744073709550591", /* fffffffffffffbff */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0xfffffffffffff800);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0xfffffffffffff800);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Beyond limits */
qdict = keyval_parse("sz1=-1,"
"sz2=18446744073709550592", /* fffffffffffffc00 */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_type_size(v, "sz2", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Suffixes */
qdict = keyval_parse("sz1=8b,sz2=1.5k,sz3=2M,sz4=0.1G,sz5=16777215T",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 8);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 1536);
visit_type_size(v, "sz3", &sz, &error_abort);
g_assert_cmphex(sz, ==, 2 * M_BYTE);
visit_type_size(v, "sz4", &sz, &error_abort);
g_assert_cmphex(sz, ==, G_BYTE / 10);
visit_type_size(v, "sz5", &sz, &error_abort);
g_assert_cmphex(sz, ==, 16777215 * T_BYTE);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Beyond limit with suffix */
qdict = keyval_parse("sz1=16777216T", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Trailing crap */
qdict = keyval_parse("sz1=16E,sz2=16Gi", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_type_size(v, "sz2", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_dict(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
int64_t i;
qdict = keyval_parse("a.b.c=1,a.b.c=2,d=3", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_start_struct(v, "b", NULL, 0, &error_abort);
visit_type_int(v, "c", &i, &error_abort);
g_assert_cmpint(i, ==, 2);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_type_int(v, "d", &i, &error_abort);
g_assert_cmpint(i, ==, 3);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
qdict = keyval_parse("a.b=", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_type_int(v, "c", &i, &err); /* a.c missing */
error_free_or_abort(&err);
visit_check_struct(v, &err);
error_free_or_abort(&err); /* a.b unexpected */
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_list(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
char *s;
qdict = keyval_parse("a.0=,a.1=I,a.2.0=II", NULL, &error_abort);
/* TODO empty list */
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_list(v, "a", NULL, 0, &error_abort);
visit_type_str(v, NULL, &s, &error_abort);
g_assert_cmpstr(s, ==, "");
g_free(s);
visit_type_str(v, NULL, &s, &error_abort);
g_assert_cmpstr(s, ==, "I");
g_free(s);
visit_start_list(v, NULL, NULL, 0, &error_abort);
visit_type_str(v, NULL, &s, &error_abort);
g_assert_cmpstr(s, ==, "II");
g_free(s);
visit_check_list(v, &error_abort);
visit_end_list(v, NULL);
visit_check_list(v, &error_abort);
visit_end_list(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
qdict = keyval_parse("a.0=,b.0.0=head", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_list(v, "a", NULL, 0, &error_abort);
visit_check_list(v, &err); /* a[0] unexpected */
error_free_or_abort(&err);
visit_end_list(v, NULL);
visit_start_list(v, "b", NULL, 0, &error_abort);
visit_start_list(v, NULL, NULL, 0, &error_abort);
visit_type_str(v, NULL, &s, &error_abort);
g_assert_cmpstr(s, ==, "head");
g_free(s);
visit_type_str(v, NULL, &s, &err); /* b[0][1] missing */
error_free_or_abort(&err);
visit_end_list(v, NULL);
visit_end_list(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_optional(void)
{
Visitor *v;
QDict *qdict;
bool present;
int64_t i;
qdict = keyval_parse("a.b=1", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_optional(v, "b", &present);
g_assert(!present); /* b missing */
visit_optional(v, "a", &present);
g_assert(present); /* a present */
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_optional(v, "b", &present);
g_assert(present); /* a.b present */
visit_type_int(v, "b", &i, &error_abort);
g_assert_cmpint(i, ==, 1);
visit_optional(v, "a", &present);
g_assert(!present); /* a.a missing */
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
}
int main(int argc, char *argv[])
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/keyval/keyval_parse", test_keyval_parse);
g_test_add_func("/keyval/keyval_parse/list", test_keyval_parse_list);
g_test_add_func("/keyval/visit/bool", test_keyval_visit_bool);
g_test_add_func("/keyval/visit/number", test_keyval_visit_number);
g_test_add_func("/keyval/visit/size", test_keyval_visit_size);
g_test_add_func("/keyval/visit/dict", test_keyval_visit_dict);
g_test_add_func("/keyval/visit/list", test_keyval_visit_list);
g_test_add_func("/keyval/visit/optional", test_keyval_visit_optional);
g_test_run();
return 0;
}
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