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qemu/tests/test-opts-visitor.c

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/*
* Options Visitor unit-tests.
*
* Copyright (C) 2013 Red Hat, Inc.
*
* Authors:
* Laszlo Ersek <lersek@redhat.com> (based on test-string-output-visitor)
*
* 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/config-file.h" /* qemu_add_opts() */
#include "qemu/option.h" /* qemu_opts_parse() */
#include "qapi/error.h"
#include "qapi/opts-visitor.h" /* opts_visitor_new() */
#include "test-qapi-visit.h" /* visit_type_UserDefOptions() */
static QemuOptsList userdef_opts = {
.name = "userdef",
.head = QTAILQ_HEAD_INITIALIZER(userdef_opts.head),
.desc = { { 0 } } /* validated with OptsVisitor */
};
/* fixture (= glib test case context) and test case manipulation */
typedef struct OptsVisitorFixture {
UserDefOptions *userdef;
Error *err;
} OptsVisitorFixture;
static void
setup_fixture(OptsVisitorFixture *f, gconstpointer test_data)
{
const char *opts_string = test_data;
QemuOpts *opts;
Visitor *v;
opts = qemu_opts_parse(qemu_find_opts("userdef"), opts_string, false,
NULL);
g_assert(opts != NULL);
v = opts_visitor_new(opts);
visit_type_UserDefOptions(v, NULL, &f->userdef, &f->err);
visit_free(v);
qemu_opts_del(opts);
}
static void
teardown_fixture(OptsVisitorFixture *f, gconstpointer test_data)
{
qapi_free_UserDefOptions(f->userdef);
error_free(f->err);
}
static void
add_test(const char *testpath,
void (*test_func)(OptsVisitorFixture *f, gconstpointer test_data),
gconstpointer test_data)
{
g_test_add(testpath, OptsVisitorFixture, test_data, setup_fixture,
test_func, teardown_fixture);
}
/* test output evaluation */
static void
expect_ok(OptsVisitorFixture *f, gconstpointer test_data)
{
g_assert(f->err == NULL);
g_assert(f->userdef != NULL);
}
static void
expect_fail(OptsVisitorFixture *f, gconstpointer test_data)
{
g_assert(f->err != NULL);
/* The error message is printed when this test utility is invoked directly
* (ie. without gtester) and the --verbose flag is passed:
*
* tests/test-opts-visitor --verbose
*/
g_test_message("'%s': %s", (const char *)test_data,
error_get_pretty(f->err));
}
static void
test_value(OptsVisitorFixture *f, gconstpointer test_data)
{
uint64_t magic, bitval;
intList *i64;
uint64List *u64;
uint16List *u16;
expect_ok(f, test_data);
magic = 0;
for (i64 = f->userdef->i64; i64 != NULL; i64 = i64->next) {
g_assert(-16 <= i64->value && i64->value < 64-16);
bitval = 1ull << (i64->value + 16);
g_assert((magic & bitval) == 0);
magic |= bitval;
}
g_assert(magic == 0xDEADBEEF);
magic = 0;
for (u64 = f->userdef->u64; u64 != NULL; u64 = u64->next) {
g_assert(u64->value < 64);
bitval = 1ull << u64->value;
g_assert((magic & bitval) == 0);
magic |= bitval;
}
g_assert(magic == 0xBADC0FFEE0DDF00DULL);
magic = 0;
for (u16 = f->userdef->u16; u16 != NULL; u16 = u16->next) {
g_assert(u16->value < 64);
bitval = 1ull << u16->value;
g_assert((magic & bitval) == 0);
magic |= bitval;
}
g_assert(magic == 0xD15EA5E);
}
static void
expect_i64_min(OptsVisitorFixture *f, gconstpointer test_data)
{
expect_ok(f, test_data);
g_assert(f->userdef->has_i64);
g_assert(f->userdef->i64->next == NULL);
g_assert(f->userdef->i64->value == INT64_MIN);
}
static void
expect_i64_max(OptsVisitorFixture *f, gconstpointer test_data)
{
expect_ok(f, test_data);
g_assert(f->userdef->has_i64);
g_assert(f->userdef->i64->next == NULL);
g_assert(f->userdef->i64->value == INT64_MAX);
}
static void
expect_zero(OptsVisitorFixture *f, gconstpointer test_data)
{
expect_ok(f, test_data);
g_assert(f->userdef->has_u64);
g_assert(f->userdef->u64->next == NULL);
g_assert(f->userdef->u64->value == 0);
}
static void
expect_u64_max(OptsVisitorFixture *f, gconstpointer test_data)
{
expect_ok(f, test_data);
g_assert(f->userdef->has_u64);
g_assert(f->userdef->u64->next == NULL);
g_assert(f->userdef->u64->value == UINT64_MAX);
}
/* test cases */
static void
test_opts_range_unvisited(void)
{
Error *err = NULL;
intList *list = NULL;
intList *tail;
QemuOpts *opts;
Visitor *v;
opts = qemu_opts_parse(qemu_find_opts("userdef"), "ilist=0-2", false,
&error_abort);
v = opts_visitor_new(opts);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
/* Would be simpler if the visitor genuinely supported virtual walks */
visit_start_list(v, "ilist", (GenericList **)&list, sizeof(*list),
&error_abort);
tail = list;
visit_type_int(v, NULL, &tail->value, &error_abort);
g_assert_cmpint(tail->value, ==, 0);
tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*list));
g_assert(tail);
visit_type_int(v, NULL, &tail->value, &error_abort);
g_assert_cmpint(tail->value, ==, 1);
tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*list));
g_assert(tail);
visit_check_list(v, &error_abort); /* unvisited tail ignored until... */
visit_end_list(v, (void **)&list);
visit_check_struct(v, &err); /* ...here */
error_free_or_abort(&err);
visit_end_struct(v, NULL);
qapi_free_intList(list);
visit_free(v);
qemu_opts_del(opts);
}
static void
test_opts_range_beyond(void)
{
Error *err = NULL;
intList *list = NULL;
intList *tail;
QemuOpts *opts;
Visitor *v;
int64_t val;
opts = qemu_opts_parse(qemu_find_opts("userdef"), "ilist=0", false,
&error_abort);
v = opts_visitor_new(opts);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
/* Would be simpler if the visitor genuinely supported virtual walks */
visit_start_list(v, "ilist", (GenericList **)&list, sizeof(*list),
&error_abort);
tail = list;
visit_type_int(v, NULL, &tail->value, &error_abort);
g_assert_cmpint(tail->value, ==, 0);
tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*tail));
g_assert(!tail);
visit_type_int(v, NULL, &val, &err);
error_free_or_abort(&err);
visit_end_list(v, (void **)&list);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
qapi_free_intList(list);
visit_free(v);
qemu_opts_del(opts);
}
static void
test_opts_dict_unvisited(void)
{
Error *err = NULL;
QemuOpts *opts;
Visitor *v;
UserDefOptions *userdef;
opts = qemu_opts_parse(qemu_find_opts("userdef"), "i64x=0,bogus=1", false,
&error_abort);
v = opts_visitor_new(opts);
visit_type_UserDefOptions(v, NULL, &userdef, &err);
error_free_or_abort(&err);
visit_free(v);
qemu_opts_del(opts);
g_assert(!userdef);
}
int
main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
qemu_add_opts(&userdef_opts);
/* Three hexadecimal magic numbers, "dead beef", "bad coffee, odd food" and
* "disease", from
* <http://en.wikipedia.org/wiki/Magic_number_%28programming%29>, were
* converted to binary and dissected into bit ranges. Each magic number is
* going to be recomposed using the lists called "i64", "u64" and "u16",
* respectively.
*
* (Note that these types pertain to the individual bit shift counts, not
* the magic numbers themselves; the intent is to exercise opts_type_int()
* and opts_type_uint64().)
*
* The "i64" shift counts have been decreased by 16 (decimal) in order to
* test negative values as well. Finally, the full list of QemuOpt elements
* has been permuted with "shuf".
*
* Both "i64" and "u64" have some (distinct) single-element ranges
* represented as both "a" and "a-a". "u16" is a special case of "i64" (see
* visit_type_uint16()), so it wouldn't add a separate test in this regard.
*/
add_test("/visitor/opts/flatten/value", &test_value,
"i64=-1-0,u64=12-16,u64=2-3,i64=-11--9,u64=57,u16=9,i64=5-5,"
"u16=1-4,u16=20,u64=63-63,i64=-16--13,u64=50-52,i64=14-15,u16=11,"
"i64=7,u16=18,i64=2-3,u16=6,u64=54-55,u64=0,u64=18-20,u64=33-43,"
"i64=9-12,u16=26-27,u64=59-61,u16=13-16,u64=29-31,u64=22-23,"
"u16=24,i64=-7--3");
add_test("/visitor/opts/i64/val1/errno", &expect_fail,
"i64=0x8000000000000000");
add_test("/visitor/opts/i64/val1/empty", &expect_fail, "i64=");
add_test("/visitor/opts/i64/val1/trailing", &expect_fail, "i64=5z");
add_test("/visitor/opts/i64/nonlist", &expect_fail, "i64x=5-6");
add_test("/visitor/opts/i64/val2/errno", &expect_fail,
"i64=0x7fffffffffffffff-0x8000000000000000");
add_test("/visitor/opts/i64/val2/empty", &expect_fail, "i64=5-");
add_test("/visitor/opts/i64/val2/trailing", &expect_fail, "i64=5-6z");
add_test("/visitor/opts/i64/range/empty", &expect_fail, "i64=6-5");
add_test("/visitor/opts/i64/range/minval", &expect_i64_min,
"i64=-0x8000000000000000--0x8000000000000000");
add_test("/visitor/opts/i64/range/maxval", &expect_i64_max,
"i64=0x7fffffffffffffff-0x7fffffffffffffff");
add_test("/visitor/opts/u64/val1/errno", &expect_fail, "u64=-1");
add_test("/visitor/opts/u64/val1/empty", &expect_fail, "u64=");
add_test("/visitor/opts/u64/val1/trailing", &expect_fail, "u64=5z");
add_test("/visitor/opts/u64/nonlist", &expect_fail, "u64x=5-6");
add_test("/visitor/opts/u64/val2/errno", &expect_fail,
"u64=0xffffffffffffffff-0x10000000000000000");
add_test("/visitor/opts/u64/val2/empty", &expect_fail, "u64=5-");
add_test("/visitor/opts/u64/val2/trailing", &expect_fail, "u64=5-6z");
add_test("/visitor/opts/u64/range/empty", &expect_fail, "u64=6-5");
add_test("/visitor/opts/u64/range/minval", &expect_zero, "u64=0-0");
add_test("/visitor/opts/u64/range/maxval", &expect_u64_max,
"u64=0xffffffffffffffff-0xffffffffffffffff");
/* Test maximum range sizes. The macro value is open-coded here
* *intentionally*; the test case must use concrete values by design. If
* OPTS_VISITOR_RANGE_MAX is changed, the following values need to be
* recalculated as well. The assert and this comment should help with it.
*/
g_assert(OPTS_VISITOR_RANGE_MAX == 65536);
/* The unsigned case is simple, a u64-u64 difference can always be
* represented as a u64.
*/
add_test("/visitor/opts/u64/range/max", &expect_ok, "u64=0-65535");
add_test("/visitor/opts/u64/range/2big", &expect_fail, "u64=0-65536");
/* The same cannot be said about an i64-i64 difference. */
add_test("/visitor/opts/i64/range/max/pos/a", &expect_ok,
"i64=0x7fffffffffff0000-0x7fffffffffffffff");
add_test("/visitor/opts/i64/range/max/pos/b", &expect_ok,
"i64=0x7ffffffffffeffff-0x7ffffffffffffffe");
add_test("/visitor/opts/i64/range/2big/pos", &expect_fail,
"i64=0x7ffffffffffeffff-0x7fffffffffffffff");
add_test("/visitor/opts/i64/range/max/neg/a", &expect_ok,
"i64=-0x8000000000000000--0x7fffffffffff0001");
add_test("/visitor/opts/i64/range/max/neg/b", &expect_ok,
"i64=-0x7fffffffffffffff--0x7fffffffffff0000");
add_test("/visitor/opts/i64/range/2big/neg", &expect_fail,
"i64=-0x8000000000000000--0x7fffffffffff0000");
add_test("/visitor/opts/i64/range/2big/full", &expect_fail,
"i64=-0x8000000000000000-0x7fffffffffffffff");
g_test_add_func("/visitor/opts/range/unvisited",
test_opts_range_unvisited);
g_test_add_func("/visitor/opts/range/beyond",
test_opts_range_beyond);
g_test_add_func("/visitor/opts/dict/unvisited", test_opts_dict_unvisited);
g_test_run();
return 0;
}
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