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Re: [Qemu-devel] [PATCH qom-next v2] qom-test: Test QOM properties
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH qom-next v2] qom-test: Test QOM properties |
Date: |
Wed, 12 Mar 2014 13:17:49 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 |
Am 12.03.2014 10:09, schrieb Markus Armbruster:
> Andreas Färber <address@hidden> writes:
>
>> Recursively walk all properties under /machine and try to retrieve their
>> value. This is a regression test for link<> properties and the
>> DeviceState::hotpluggable property.
>>
>> Cf. be2f78b6b062eec5170e2612299fb8953046993f and
>> 1a37eca107cece3ed454bae29eef0bd1fac4a244
>
> I'm afraid the last sentence is too terse for me to understand.
Commit hashes of a) link<> property bug fix and b) hotpluggable property
introduction. Both were about segfaults.
>
>> Signed-off-by: Andreas Färber <address@hidden>
>> ---
>> v2: Added g_test_message()s.
>>
>> Applying to qom-next.
>>
>> tests/qom-test.c | 43 +++++++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 43 insertions(+)
>>
>> diff --git a/tests/qom-test.c b/tests/qom-test.c
>> index b6671fb..4909258 100644
>> --- a/tests/qom-test.c
>> +++ b/tests/qom-test.c
>> @@ -10,6 +10,7 @@
>> #include <glib.h>
>> #include <string.h>
>>
>> +#include "qemu-common.h"
>> #include "libqtest.h"
>> #include "qemu/osdep.h"
>> #include "qapi/qmp/types.h"
>> @@ -43,6 +44,44 @@ static bool is_blacklisted(const char *arch, const char
>> *mach)
>> return false;
>> }
>>
>> +static void test_properties(const char *path)
>> +{
>> + char *cmd, *child_path;
>> + QDict *response, *tuple;
>> + QList *list;
>> + QListEntry *entry;
>> +
>> + g_test_message("Obtaining properties of %s", path);
>> + cmd = g_strdup_printf("{ 'execute': 'qom-list',"
>> + " 'arguments': { 'path': '%s' } }", path);
>> + response = qmp(cmd);
>> + g_free(cmd);
>> + g_assert(response);
>> +
>> + g_assert(qdict_haskey(response, "return"));
>> + list = qobject_to_qlist(qdict_get(response, "return"));
>> + QLIST_FOREACH_ENTRY(list, entry) {
>> + tuple = qobject_to_qdict(qlist_entry_obj(entry));
>> + if (strstart(qdict_get_str(tuple, "type"), "child<", NULL)) {
>> + child_path = g_strdup_printf("%s/%s",
>> + path, qdict_get_str(tuple,
>> "name"));
>> + test_properties(child_path);
>> + g_free(child_path);
>> + } else {
>> + const char *prop = qdict_get_str(tuple, "name");
>> + g_test_message("Testing property %s.%s", path, prop);
>> + cmd = g_strdup_printf("{ 'execute': 'qom-get',"
>> + " 'arguments': { 'path': '%s',"
>> + " 'property': '%s' } }",
>> + path, prop);
>> + response = qmp(cmd);
>> + g_free(cmd);
>> + /* This may fail but should not, e.g., segfault. */
>> + g_assert(response);
>
> I'm not sure I get your comment.
Executing qom-get may return a QMP error when accessing a property, but
it may not crash. Therefore not much we can assert in the response. If a
segfault occurs, the process is gone at this point.
>
>> + }
>> + }
>> +}
>> +
>> static void test_machine(gconstpointer data)
>> {
>> const char *machine = data;
>> @@ -51,8 +90,12 @@ static void test_machine(gconstpointer data)
>>
>> args = g_strdup_printf("-machine %s", machine);
>> qtest_start(args);
>> +
>> + test_properties("/machine");
>> +
>> response = qmp("{ 'execute': 'quit' }");
>> g_assert(qdict_haskey(response, "return"));
>> +
>> qtest_end();
>> g_free(args);
>> }
>
> Looks like an excellent addition to the test suite. Thanks!
Unfortunately adds to the main-loop warnings.
Cheers,
Andreas
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