[PATCH libevdev 2/3] test: devices with abs axes need to be created properly

Benjamin Tissoires benjamin.tissoires at gmail.com
Mon Aug 12 02:24:44 PDT 2013


On Fri, Aug 9, 2013 at 8:40 AM, Peter Hutterer <peter.hutterer at who-t.net> wrote:
> Simply enabling the bits is not enough, we need to provide axis
> information too if we want to enable this properly.
>
> Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>

I'm a little bit worried about this patch. It does not looks very consistent:
sometimes, you use "int code = 0", in other places "int code = ABS_X"
and in some others "struct input_absinfo abs = { ABS_X, 0, 2, 0, 0,
0};".

See my comments below:

> ---
>  test/test-libevdev-has-event.c | 141 ++++++++++++++++++++++++-----------------
>  1 file changed, 83 insertions(+), 58 deletions(-)
>
> diff --git a/test/test-libevdev-has-event.c b/test/test-libevdev-has-event.c
> index f96bbc3..c1bfd0d 100644
> --- a/test/test-libevdev-has-event.c
> +++ b/test/test-libevdev-has-event.c
> @@ -45,9 +45,16 @@ START_TEST(test_has_ev_bit)
>                 struct uinput_device* uidev;
>                 struct libevdev *dev;
>                 int i, rc;
> +               int code = 0;

Why this variable is required?

>
> -               rc = test_create_device(&uidev, &dev,
> -                                       *evbit, 0,
> +               if (*evbit == EV_ABS) {
> +                       struct input_absinfo abs = { code, 0, 2, 0, 0, 0};

I would directly use: "struct input_absinfo abs = { ABS_X, 0, 2, 0, 0,
0};" instead.

> +                       rc = test_create_abs_device(&uidev, &dev,
> +                                       1, &abs,
> +                                       -1);
> +               } else
> +                       rc = test_create_device(&uidev, &dev,
> +                                       *evbit, code,
>                                         -1);
>                 ck_assert_msg(rc == 0, "%s: Failed to create device with: %s",
>                                 libevdev_get_event_type_name(*evbit),
> @@ -79,10 +86,17 @@ START_TEST(test_ev_bit_limits)
>                 struct uinput_device* uidev;
>                 struct libevdev *dev;
>                 int rc;
> +               int code = 0;

ditto

>
> -               rc = test_create_device(&uidev, &dev,
> -                                       *evbit, 0,
> -                                       -1);
> +               if (*evbit == EV_ABS) {
> +                       struct input_absinfo abs = { code, 0, 2, 0, 0, 0};

ditto

> +                       rc = test_create_abs_device(&uidev, &dev,
> +                                                   1, &abs,
> +                                                   -1);
> +               } else
> +                       rc = test_create_device(&uidev, &dev,
> +                                               *evbit, code,
> +                                               -1);
>                 ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>                 ck_assert_int_eq(libevdev_has_event_type(dev, EV_MAX + 1), 0);
> @@ -114,9 +128,15 @@ START_TEST(test_event_codes)
>                 max = libevdev_get_event_type_max(*evbit);
>
>                 for (code = 1; code < max; code += 10) {
> -                       rc = test_create_device(&uidev, &dev,
> -                                               *evbit, code,
> -                                               -1);
> +                       if (*evbit == EV_ABS) {
> +                               struct input_absinfo abs = { code, 0, 2, 0, 0, 0};
> +                               rc = test_create_abs_device(&uidev, &dev,
> +                                                           1, &abs,
> +                                                           -1);
> +                       } else
> +                               rc = test_create_device(&uidev, &dev,
> +                                                       *evbit, code,
> +                                                       -1);
>                         ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>                         ck_assert_msg(libevdev_has_event_type(dev, *evbit), "for event type %d\n", *evbit);
> @@ -143,6 +163,7 @@ START_TEST(test_event_code_limits)
>                 struct libevdev *dev;
>                 int rc;
>                 int max;
> +               int code = 1;
>
>                 if (*evbit == EV_SYN) {
>                         evbit++;
> @@ -152,8 +173,14 @@ START_TEST(test_event_code_limits)
>                 max = libevdev_get_event_type_max(*evbit);
>                 ck_assert(max != -1);
>
> -               rc = test_create_device(&uidev, &dev,
> -                                       *evbit, 1,
> +               if (*evbit == EV_ABS) {
> +                       struct input_absinfo abs = { code, 0, 2, 0, 0, 0};
> +                       rc = test_create_abs_device(&uidev, &dev,
> +                                       1, &abs,
> +                                       -1);
> +               } else
> +                       rc = test_create_device(&uidev, &dev,
> +                                       *evbit, code,
>                                         -1);
>                 ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
> @@ -213,11 +240,10 @@ START_TEST(test_input_props)
>         struct uinput_device* uidev;
>         struct libevdev *dev;
>         int rc, i;
> +       struct input_absinfo abs = {0, 0, 2, 0, 0};

I would rather see ABS_X there (instead of the first 0)

>
>         uidev = uinput_device_new(TEST_DEVICE_NAME);
> -       rc = uinput_device_set_event_bits(uidev,
> -                                         EV_ABS, ABS_X,
> -                                         -1);
> +       rc = uinput_device_set_abs_bit(uidev, ABS_X, &abs);
>         ck_assert_int_eq(rc, 0);
>         uinput_device_set_prop(uidev, INPUT_PROP_DIRECT);
>         uinput_device_set_prop(uidev, INPUT_PROP_BUTTONPAD);
> @@ -248,6 +274,7 @@ START_TEST(test_set_input_props)
>         struct uinput_device* uidev;
>         struct libevdev *dev;
>         int rc, fd;
> +       struct input_absinfo abs = {0, 0, 2, 0, 0};

ditto

>
>         dev = libevdev_new();
>         ck_assert_int_eq(libevdev_enable_property(dev, INPUT_PROP_MAX + 1), -1);
> @@ -257,9 +284,7 @@ START_TEST(test_set_input_props)
>         ck_assert_int_eq(libevdev_has_property(dev, INPUT_PROP_BUTTONPAD), 1);
>
>         uidev = uinput_device_new(TEST_DEVICE_NAME);
> -       rc = uinput_device_set_event_bits(uidev,
> -                                         EV_ABS, ABS_X,
> -                                         -1);
> +       rc = uinput_device_set_abs_bit(uidev,ABS_X, &abs);

nitpick: missing space before ABS_X :)

>         ck_assert_int_eq(rc, 0);
>         uinput_device_set_prop(uidev, INPUT_PROP_BUTTONPAD);
>         rc = uinput_device_create(uidev);
> @@ -288,14 +313,7 @@ START_TEST(test_slot_init_value)
>         int fd;
>
>         uidev = uinput_device_new(TEST_DEVICE_NAME);
> -       rc = uinput_device_set_event_bits(uidev,
> -                       EV_ABS, ABS_X,
> -                       EV_ABS, ABS_Y,
> -                       EV_ABS, ABS_MT_SLOT,
> -                       EV_ABS, ABS_MT_TRACKING_ID,
> -                       EV_ABS, ABS_MT_POSITION_X,
> -                       EV_ABS, ABS_MT_POSITION_Y,
> -                       -1);
> +       rc = uinput_device_set_event_bits(uidev, -1);

Hmm... how can you test against ABS_X, ABS_Y, ABS_MT_POSITION_*,
etc... if you disable all the event bits?

ok, nevermind, I re-read the test and it is ok.

Maybe you should also re-write the assignments of abs with a simple
declaration like you do later:

      struct input_absinfo abs[] = {  { ABS_X, 0, 1000 },
                                      { ABS_Y, 0, 1000 },
                                      { ABS_MT_POSITION_X, 0, 1000 },
                                      { ABS_MT_POSITION_Y, 0, 1000 },
                                    { ABS_MT_TRACKING_ID, -1, 2 },
                                    { ABS_MT_SLOT, 0, 1 }};

>         ck_assert_int_eq(rc, 0);
>
>         memset(abs, 0, sizeof(abs));
> @@ -360,12 +378,17 @@ START_TEST(test_no_slots)
>         struct uinput_device* uidev;
>         struct libevdev *dev;
>         int rc;
> -       rc = test_create_device(&uidev, &dev,
> -                               EV_ABS, ABS_X,
> -                               EV_ABS, ABS_Y,
> -                               EV_ABS, ABS_MT_POSITION_X,
> -                               EV_ABS, ABS_MT_POSITION_Y,
> -                               -1);
> +       struct input_absinfo abs[] = {  { ABS_X, 0, 2 },
> +                                       { ABS_Y, 0, 2 },
> +                                       { ABS_MT_POSITION_X, 0, 2 },
> +                                       { ABS_MT_POSITION_Y, 0, 2 }};
> +
> +       rc = test_create_abs_device(&uidev, &dev, 4, abs,
> +                                   EV_ABS, ABS_X,
> +                                   EV_ABS, ABS_Y,
> +                                   EV_ABS, ABS_MT_POSITION_X,
> +                                   EV_ABS, ABS_MT_POSITION_Y,
> +                                   -1);
>         ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>         ck_assert_int_eq(libevdev_get_num_slots(dev), -1);
> @@ -381,17 +404,23 @@ START_TEST(test_slot_number)
>         struct uinput_device* uidev;
>         struct libevdev *dev;
>         int rc;
> +       const int nslots = 4;
> +       struct input_absinfo abs[] = {  { ABS_X, 0, 2 },
> +                                       { ABS_Y, 0, 2 },
> +                                       { ABS_MT_POSITION_X, 0, 2 },
> +                                       { ABS_MT_POSITION_Y, 0, 2 },
> +                                       { ABS_MT_SLOT, 0, nslots - 1 }};
>
> -       rc = test_create_device(&uidev, &dev,
> -                               EV_ABS, ABS_X,
> -                               EV_ABS, ABS_Y,
> -                               EV_ABS, ABS_MT_POSITION_X,
> -                               EV_ABS, ABS_MT_POSITION_Y,
> -                               EV_ABS, ABS_MT_SLOT,
> -                               -1);
> +       rc = test_create_abs_device(&uidev, &dev, 5, abs,
> +                                   EV_ABS, ABS_X,
> +                                   EV_ABS, ABS_Y,
> +                                   EV_ABS, ABS_MT_POSITION_X,
> +                                   EV_ABS, ABS_MT_POSITION_Y,
> +                                   EV_ABS, ABS_MT_SLOT,
> +                                   -1);
>         ck_assert_msg(rc == 0, "Failed to uinput device: %s", strerror(-rc));
>
> -       ck_assert_int_eq(libevdev_get_num_slots(dev), 1);
> +       ck_assert_int_eq(libevdev_get_num_slots(dev), nslots);
>         ck_assert_int_eq(libevdev_get_current_slot(dev), 0);
>
>         uinput_device_free(uidev);
> @@ -694,12 +723,12 @@ START_TEST(test_device_enable_bit)
>  {
>         struct uinput_device* uidev;
>         struct libevdev *dev, *dev2;
> -       struct input_absinfo abs;
> +       struct input_absinfo abs = {ABS_X, 0, 2};
>         int rc;
>
> -       rc = test_create_device(&uidev, &dev,
> -                               EV_ABS, ABS_X,
> -                               -1);
> +       rc = test_create_abs_device(&uidev, &dev, 1, &abs,
> +                                   EV_ABS, ABS_X,
> +                                   -1);
>         ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>         ck_assert(!libevdev_has_event_code(dev, EV_ABS, ABS_Y));
> @@ -740,12 +769,12 @@ START_TEST(test_device_enable_bit_invalid)
>  {
>         struct uinput_device* uidev;
>         struct libevdev *dev;
> -       struct input_absinfo abs = {0};
> +       struct input_absinfo abs = {ABS_X, 0, 1};
>         int rc;
>
> -       rc = test_create_device(&uidev, &dev,
> -                               EV_ABS, ABS_X,
> -                               -1);
> +       rc = test_create_abs_device(&uidev, &dev, 1, &abs,
> +                                   EV_ABS, ABS_X,
> +                                   -1);
>         ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>         ck_assert_int_eq(libevdev_enable_event_code(dev, EV_ABS, ABS_MAX + 1, &abs), -1);
> @@ -766,13 +795,13 @@ START_TEST(test_device_disable_bit)
>         struct uinput_device* uidev;
>         struct libevdev *dev, *dev2;
>         int rc;
> +       struct input_absinfo abs[2] = {{ABS_X, 0, 1}, {ABS_Y, 0, 1}};
>
> -       rc = test_create_device(&uidev, &dev,
> -                               EV_ABS, ABS_X,
> -                               EV_ABS, ABS_Y,
> -                               EV_REL, REL_X,
> -                               EV_REL, REL_Y,
> -                               -1);
> +       rc = test_create_abs_device(&uidev, &dev,
> +                                   2, abs,
> +                                   EV_REL, REL_X,
> +                                   EV_REL, REL_Y,

Seems like you are missing the EV_ABS bits here... :(

> +                                   -1);
>         ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
>
>         ck_assert(libevdev_has_event_code(dev, EV_ABS, ABS_X));
> @@ -814,14 +843,10 @@ START_TEST(test_device_disable_bit_invalid)
>         struct uinput_device* uidev;
>         struct libevdev *dev;
>         int rc;
> +       struct input_absinfo abs = {ABS_X, 0, 1};
>
> -       rc = uinput_device_new_with_events(&uidev, TEST_DEVICE_NAME, DEFAULT_IDS,
> -                                          EV_ABS, ABS_X,
> -                                          -1);
> +       rc = test_create_abs_device(&uidev, &dev, 1, &abs, -1);
>         ck_assert_msg(rc == 0, "Failed to create uinput device: %s", strerror(-rc));
> -       rc = libevdev_new_from_fd(uinput_device_get_fd(uidev), &dev);
> -       ck_assert_msg(rc == 0, "Failed to init device: %s", strerror(-rc));
> -
>
>         ck_assert_int_eq(libevdev_disable_event_code(dev, EV_ABS, ABS_MAX + 1), -1);
>         ck_assert_int_eq(libevdev_disable_event_code(dev, EV_MAX + 1, ABS_MAX + 1), -1);
> --
> 1.8.2.1
>
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Cheers,
Benjamin


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