Re: [Qemu-devel] [PATCH] test: QOM interface casting

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 20 Dec 2013 14:26:11 +0100
Igor Mammedov <imammedo@redhat.com> wrote:

Andreas,

test shows that commit:

"qom: Do not register interface "types" in the type table "
https://github.com/afaerber/qemu-cpu/commit/7f00136ff5534ee651f4f10475170b8db18e5c03

regresses QOM Interface in case where interface is implemented
in not a leaf class, leading to abort.

> Add basic regression testing for QOM Interface usage.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v2:
>  - Peter Crosthwaite <peter.crosthwaite@xilinx.com>
>    * s/Parent/parent_obj/
>    * s/parent/parent_class/
>  - Peter Maydell <peter.maydell@linaro.org>
>    * s/interfacei/interface/
>    * tests/Makefile split too long line
>  - Andreas Färber <afaerber@suse.de>
>    * consolidate QOM core object files in dedicated variable
>    * add SoB and commit message
> ---
>  tests/Makefile              |    6 ++-
>  tests/check-qom-interface.c |  102 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 107 insertions(+), 1 deletions(-)
>  create mode 100644 tests/check-qom-interface.c
> 
> diff --git a/tests/Makefile b/tests/Makefile
> index 379cdd9..89f8eff 100644
> --- a/tests/Makefile
> +++ b/tests/Makefile
> @@ -52,6 +52,8 @@ check-unit-y += tests/test-int128$(EXESUF)
>  gcov-files-test-int128-y =
>  check-unit-y += tests/test-bitops$(EXESUF)
>  check-unit-y += tests/test-qdev-global-props$(EXESUF)
> +check-unit-y = tests/check-qom-interface$(EXESUF)
> +gcov-files-check-qdict-y = object/object.c
>  
>  check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
>  
> @@ -137,6 +139,7 @@ test-qapi-obj-y = tests/test-qapi-visit.o tests/test-qapi-types.o
>  
>  $(test-obj-y): QEMU_INCLUDES += -Itests
>  QEMU_CFLAGS += -I$(SRC_PATH)/tests
> +qom-core-obj = qom/object.o qom/qom-qobject.o qom/container.o
>  
>  tests/test-x86-cpuid.o: QEMU_INCLUDES += -I$(SRC_PATH)/target-i386
>  
> @@ -146,6 +149,7 @@ tests/check-qdict$(EXESUF): tests/check-qdict.o libqemuutil.a
>  tests/check-qlist$(EXESUF): tests/check-qlist.o libqemuutil.a
>  tests/check-qfloat$(EXESUF): tests/check-qfloat.o libqemuutil.a
>  tests/check-qjson$(EXESUF): tests/check-qjson.o libqemuutil.a libqemustub.a
> +tests/check-qom-interface$(EXESUF): tests/check-qom-interface.o $(qom-core-obj) libqemuutil.a
>  tests/test-coroutine$(EXESUF): tests/test-coroutine.o $(block-obj-y) libqemuutil.a libqemustub.a
>  tests/test-aio$(EXESUF): tests/test-aio.o $(block-obj-y) libqemuutil.a libqemustub.a
>  tests/test-throttle$(EXESUF): tests/test-throttle.o $(block-obj-y) libqemuutil.a libqemustub.a
> @@ -159,7 +163,7 @@ tests/test-int128$(EXESUF): tests/test-int128.o
>  tests/test-qdev-global-props$(EXESUF): tests/test-qdev-global-props.o \
>  	hw/core/qdev.o hw/core/qdev-properties.o \
>  	hw/core/irq.o \
> -	qom/object.o qom/container.o qom/qom-qobject.o \
> +	$(qom-core-obj) \
>  	$(test-qapi-obj-y) \
>  	libqemuutil.a libqemustub.a
>  
> diff --git a/tests/check-qom-interface.c b/tests/check-qom-interface.c
> new file mode 100644
> index 0000000..8d7c1f8
> --- /dev/null
> +++ b/tests/check-qom-interface.c
> @@ -0,0 +1,102 @@
> +/*
> + * OQM interface test.
> + *
> + * Copyright (C) 2013 Red Hat Inc.
> + *
> + * Authors:
> + *  Igor Mammedov <imammedo@redhat.com>
> + *
> + * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
> + * See the COPYING.LIB file in the top-level directory.
> + */
> +#include <glib.h>
> +
> +#include "qom/object.h"
> +#include "qemu/module.h"
> +
> +
> +#define TYPE_TEST_IF "test-interface"
> +#define TEST_IF_CLASS(klass) \
> +     OBJECT_CLASS_CHECK(TestIfClass, (klass), TYPE_TEST_IF)
> +#define TEST_IF_GET_CLASS(obj) \
> +     OBJECT_GET_CLASS(TestIfClass, (obj), TYPE_TEST_IF)
> +#define TEST_IF(obj) \
> +     INTERFACE_CHECK(TestIf, (obj), TYPE_TEST_IF)
> +
> +typedef struct TestIf {
> +    Object parent_obj;
> +} TestIf;
> +
> +typedef struct TestIfClass {
> +    InterfaceClass parent_class;
> +
> +    uint32_t test;
> +} TestIfClass;
> +
> +static const TypeInfo test_if_info = {
> +    .name          = TYPE_TEST_IF,
> +    .parent        = TYPE_INTERFACE,
> +    .class_size = sizeof(TestIfClass),
> +};
> +
> +#define PATTERN 0xFAFBFCFD
> +static void test_class_init(ObjectClass *oc, void *data)
> +{
> +    TestIfClass *tc = TEST_IF_CLASS(oc);
> +
> +    g_assert(tc);
> +    tc->test = PATTERN;
> +}
> +
> +#define TYPE_DIRECT_IMPL "direct-impl"
> +static const TypeInfo direct_impl_info = {
> +    .name = TYPE_DIRECT_IMPL,
> +    .parent = TYPE_OBJECT,
> +    .class_init = test_class_init,
> +    .interfaces = (InterfaceInfo[]) {
> +        { TYPE_TEST_IF },
> +        { }
> +    }
> +};
> +
> +#define TYPE_INTERMEDIATE_IMPL "intermediate-impl"
> +static const TypeInfo intermediate_impl_info = {
> +    .name = TYPE_INTERMEDIATE_IMPL,
> +    .parent = TYPE_DIRECT_IMPL,
> +};
> +
> +static void test_interface_impl(const char *type)
> +{
> +    Object *obj = object_new(type);
> +    TestIf *iobj = TEST_IF(obj);
> +    TestIfClass *ico = TEST_IF_GET_CLASS(iobj);
> +
> +    g_assert(iobj);
> +    g_assert(ico->test == PATTERN);
> +}
> +
> +static void interface_direct_test(void)
> +{
> +    test_interface_impl(TYPE_DIRECT_IMPL);
> +}
> +
> +static void interface_intermediate_test(void)
> +{
> +    test_interface_impl(TYPE_INTERMEDIATE_IMPL);
> +}
> +
> +int main(int argc, char **argv)
> +{
> +    g_test_init(&argc, &argv, NULL);
> +
> +    module_call_init(MODULE_INIT_QOM);
> +    type_register_static(&test_if_info);
> +    type_register_static(&direct_impl_info);
> +    type_register_static(&intermediate_impl_info);
> +
> +    g_test_add_func("/interface/direct_impl", interface_direct_test);
> +    g_test_add_func("/interface/intermediate_impl",
> +                    interface_intermediate_test);
> +
> +    return g_test_run();
> +}