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qapi: fix visitor serialization tests for numbers/doubles 

We never actually stored the stringified double values into the strings
before we did the comparisons. This left number/double values completely
uncovered in test-visitor-serialization tests.

Fixing this exposed a bug in our handling of large whole number values
in QEMU's JSON parser which is now fixed.

Simplify the code while we're at it by dropping the
calc_float_string_storage() craziness in favor of GStrings.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Michael Roth 2013-05-10 17:46:07 -05:00 committed by Luiz Capitulino
parent e92cfa0d90
commit 089f26bb73
1 changed files with 8 additions and 17 deletions
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25
tests/test-visitor-serialization.c
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@ -229,17 +229,6 @@ typedef struct TestArgs {
void *test_data;
} TestArgs;
#define FLOAT_STRING_PRECISION 6 /* corresponding to n in %.nf formatting */
static gsize calc_float_string_storage(double value)
{
int whole_value = value;
gsize i = 0;
do {
i++;
} while (whole_value /= 10);
return i + 2 + FLOAT_STRING_PRECISION;
}
static void test_primitives(gconstpointer opaque)
{
TestArgs *args = (TestArgs *) opaque;
@ -248,7 +237,6 @@ static void test_primitives(gconstpointer opaque)
PrimitiveType *pt_copy = g_malloc0(sizeof(*pt_copy));
Error *err = NULL;
void *serialize_data;
char *double1, *double2;
pt_copy->type = pt->type;
ops->serialize(pt, &serialize_data, visit_primitive_type, &err);
@ -260,14 +248,17 @@ static void test_primitives(gconstpointer opaque)
g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
g_free((char *)pt_copy->value.string);
} else if (pt->type == PTYPE_NUMBER) {
GString *double_expected = g_string_new("");
GString *double_actual = g_string_new("");
/* we serialize with %f for our reference visitors, so rather than fuzzy
* floating math to test "equality", just compare the formatted values
*/
double1 = g_malloc0(calc_float_string_storage(pt->value.number));
double2 = g_malloc0(calc_float_string_storage(pt_copy->value.number));
g_assert_cmpstr(double1, ==, double2);
g_free(double1);
g_free(double2);
g_string_printf(double_expected, "%.6f", pt->value.number);
g_string_printf(double_actual, "%.6f", pt_copy->value.number);
g_assert_cmpstr(double_actual->str, ==, double_expected->str);
g_string_free(double_expected, true);
g_string_free(double_actual, true);
} else if (pt->type == PTYPE_BOOLEAN) {
g_assert_cmpint(!!pt->value.max, ==, !!pt->value.max);
} else {