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qapi: Simplify non-error testing in test-qmp-*

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By using &error_abort, we can avoid a local err variable in
situations where we expect success.  It also has the nice
effect that if the test breaks, the error message from
error_abort tends to be nicer than that of g_assert().

This patch has an additional bonus of fixing several call sites that
were passing &err to two different functions without checking it in
between.  In general that is unsafe practice; because if the first
function sets an error, the second function could abort() if it tries to
set a different error. We got away with it because we were asserting
that err was NULL through the entire chain, but switching to
&error_abort avoids the questionable practice up front.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1446791754-23823-7-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake 2015-11-05 23:35:30 -07:00 • committed by Markus Armbruster
parent b18f1141d0
commit 3f66f764ee
4 changed files with 53 additions and 135 deletions
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42
tests/test-visitor-serialization.c
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@ -302,14 +302,13 @@ static void test_primitives(gconstpointer opaque)
const SerializeOps *ops = args->ops;
PrimitiveType *pt = args->test_data;
PrimitiveType *pt_copy = g_malloc0(sizeof(*pt_copy));
Error *err = NULL;
void *serialize_data;
pt_copy->type = pt->type;
ops->serialize(pt, &serialize_data, visit_primitive_type, &err);
ops->deserialize((void **)&pt_copy, serialize_data, visit_primitive_type, &err);
ops->serialize(pt, &serialize_data, visit_primitive_type, &error_abort);
ops->deserialize((void **)&pt_copy, serialize_data, visit_primitive_type,
&error_abort);
g_assert(err == NULL);
g_assert(pt_copy != NULL);
if (pt->type == PTYPE_STRING) {
g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
@ -345,7 +344,6 @@ static void test_primitive_lists(gconstpointer opaque)
PrimitiveList pl = { .value = { NULL } };
PrimitiveList pl_copy = { .value = { NULL } };
PrimitiveList *pl_copy_ptr = &pl_copy;
Error *err = NULL;
void *serialize_data;
void *cur_head = NULL;
int i;
@ -492,10 +490,11 @@ static void test_primitive_lists(gconstpointer opaque)
}
}
ops->serialize((void **)&pl, &serialize_data, visit_primitive_list, &err);
ops->deserialize((void **)&pl_copy_ptr, serialize_data, visit_primitive_list, &err);
ops->serialize((void **)&pl, &serialize_data, visit_primitive_list,
&error_abort);
ops->deserialize((void **)&pl_copy_ptr, serialize_data,
visit_primitive_list, &error_abort);
g_assert(err == NULL);
i = 0;
/* compare our deserialized list of primitives to the original */
@ -652,10 +651,8 @@ static void test_primitive_lists(gconstpointer opaque)
g_assert_cmpint(i, ==, 33);
ops->cleanup(serialize_data);
dealloc_helper(&pl, visit_primitive_list, &err);
g_assert(!err);
dealloc_helper(&pl_copy, visit_primitive_list, &err);
g_assert(!err);
dealloc_helper(&pl, visit_primitive_list, &error_abort);
dealloc_helper(&pl_copy, visit_primitive_list, &error_abort);
g_free(args);
}
@ -665,13 +662,12 @@ static void test_struct(gconstpointer opaque)
const SerializeOps *ops = args->ops;
TestStruct *ts = struct_create();
TestStruct *ts_copy = NULL;
Error *err = NULL;
void *serialize_data;
ops->serialize(ts, &serialize_data, visit_struct, &err);
ops->deserialize((void **)&ts_copy, serialize_data, visit_struct, &err);
ops->serialize(ts, &serialize_data, visit_struct, &error_abort);
ops->deserialize((void **)&ts_copy, serialize_data, visit_struct,
&error_abort);
g_assert(err == NULL);
struct_compare(ts, ts_copy);
struct_cleanup(ts);
@ -687,14 +683,12 @@ static void test_nested_struct(gconstpointer opaque)
const SerializeOps *ops = args->ops;
UserDefTwo *udnp = nested_struct_create();
UserDefTwo *udnp_copy = NULL;
Error *err = NULL;
void *serialize_data;
ops->serialize(udnp, &serialize_data, visit_nested_struct, &err);
ops->serialize(udnp, &serialize_data, visit_nested_struct, &error_abort);
ops->deserialize((void **)&udnp_copy, serialize_data, visit_nested_struct,
&err);
&error_abort);
g_assert(err == NULL);
nested_struct_compare(udnp, udnp_copy);
nested_struct_cleanup(udnp);
@ -709,7 +703,6 @@ static void test_nested_struct_list(gconstpointer opaque)
TestArgs *args = (TestArgs *) opaque;
const SerializeOps *ops = args->ops;
UserDefTwoList *listp = NULL, *tmp, *tmp_copy, *listp_copy = NULL;
Error *err = NULL;
void *serialize_data;
int i = 0;
@ -720,11 +713,10 @@ static void test_nested_struct_list(gconstpointer opaque)
listp = tmp;
}
ops->serialize(listp, &serialize_data, visit_nested_struct_list, &err);
ops->serialize(listp, &serialize_data, visit_nested_struct_list,
&error_abort);
ops->deserialize((void **)&listp_copy, serialize_data,
visit_nested_struct_list, &err);
g_assert(err == NULL);
visit_nested_struct_list, &error_abort);
tmp = listp;
tmp_copy = listp_copy;