Commit graph

280 commits

Author SHA1 Message Date
Peter Hutterer
9ccd6c0cd2 test: mix mixing of middle buttons state vs config status enum types
Coverity complaint: mixed_enums: Mixing enum types enum
libinput_config_middle_emulation_state and enum libinput_config_status

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-04-21 18:05:41 +10:00
Peter Hutterer
c2f267b443 touchpad: don't post 2fg scrolling when edge scrolling is enabled
https://bugs.freedesktop.org/show_bug.cgi?id=90070

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-21 17:59:12 +10:00
Peter Hutterer
4cdb810bc8 test: adjust the movement size for edge scroll timeout testing
The goal of this test is to make sure that the deltas are less than 5, which
is the scroll trigger for movement-based edge scrolling. The litest suite
takes percentages of the device, so use a scale factor to change how far we
move on the tablet. The wacom tablet is 141mm, the movement must be smaller to
provide small-enough deltas.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-21 17:58:10 +10:00
Peter Hutterer
8fce9e2809 test: extend edge scrolling tests to all non-clickpads
The single finger requirement dates back to when we couldn't configure the
scroll method. Now we can, so let's run the tests on as many suitable devices
as possible.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-21 17:58:10 +10:00
Peter Hutterer
3b7095f33f test: enable edge scrolling in all edge scroll tests
Just to make sure it is enabled (it should be anyway).

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-21 17:58:10 +10:00
Peter Hutterer
776bf4938d evdev: accept but disable ABS_MISC and above for min/max == 0
This is sort-of legitimate, so simply disable the axes and continue.
Any real axis we require to have a real range.

https://bugs.freedesktop.org/show_bug.cgi?id=90090

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-21 11:36:19 +10:00
Peter Hutterer
abdca33387 touchpad: introduce MULTITAP for multi-tap-and-drag
Once we have a doubletap, enter a loop in the state machine where we can tap
multiple times and either get a multi-click or a multi-click drag-and-drop.

The sequence down/up down/up down/up produces a triple-click. The sequence
down/up down/up down/up down produces a triple-click with a button down for
dragging. Yes, that glorious octuple-tap-and-drag, it is now possible. World
domination has been achieved, thank you for playing.

We don't know when we finish tapping now, so add a timeout to send the last
click event once the finger has been released for the last time. This
guarantees that the timestamp of the last button down is later than the
last release. This avoids the bug fixed in synaptics commit
xf86-input-synaptics-1.8.0-21-g37d34f0 (some application don't handle
doubletap correctly without the timestamps).

This works for double-tap immediately, for multi-tap we need to remember the
timestamp of the first press event and use it for the release event so that
there's a forced gap between the release and the second press.

https://bugs.freedesktop.org/show_bug.cgi?id=89511

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-17 12:59:22 +10:00
Peter Hutterer
88d1a52670 test: add litest_is_button_event
Makes it easier from a caller to check for common things without all the other
boilerplate code.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-17 12:59:22 +10:00
Peter Hutterer
a09476cdac test: middle button emulation tests
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-17 12:50:08 +10:00
Peter Hutterer
75f15917a3 evdev: add support for middle button emulation
This is just the required framework, it's not hooked up to anything just yet.
Hooking it up comes as separate commit to better detail why/when a device
supports emulation.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-17 12:50:03 +10:00
Peter Hutterer
26062e8469 touchpad: reduce palm detection threshold to 70mm
https://bugzilla.redhat.com/show_bug.cgi?id=1209753 lists a touchpad 76mm wide
that suffers from palm touches

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-16 18:06:59 +10:00
Peter Hutterer
39f1125347 touchpad: don't allow taps in the top half of the palm exclusion zone.
Touches in the exclusion zone are ignored for palm detection and don't move
the cursor. Tapping however triggers before we know whether something is a
palm or not, so we get erroneous button clickst.

If a tap happens in the top half of the touchpad, within the palm exclusion
zones, ignore it for tap purposes. To avoid further complicating the state
machine simply pretend there was a movement > threshold on that finger. This
advances the tap state machine properly that no button events are sent for
this finger.

https://bugs.freedesktop.org/show_bug.cgi?id=89625

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-16 15:47:34 +10:00
Peter Hutterer
bd6fd8bb92 test: add a scrollwheel-only device
This currently requires a specific udev rule to tag the device, once the
matching bits are upstream we can drop this.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-13 11:48:38 +02:00
Peter Hutterer
e15a7a740d evdev: any scroll device must have CAP_POINTER
Follow-up to e2f61b8fb7.

Scroll events are sent through the pointer interface, so we must set the
capability. Otherwise a caller may not have the required bits set up and is a
bit surprised by events coming out of an interface the device doesn't actually
have (xf86-input-libinput crashes when this happens).

Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-13 11:47:39 +02:00
Peter Hutterer
36ec8b5133 evdev: reject devices with only one of x/y resolution
This is a kernel bug, reject such devices outright. This saves us from a bunch
of extra double checks to make sure that the resolutions are always set up.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-09 14:18:27 +02:00
Peter Hutterer
591a41f9dd touchpad: count the tapping fingers separately from the main touchpad code
tp->nfingers_down gives us the current state of the touchpad but in the case
of the tapping state we need the touchpoints separately. If all touchpoints
end in the same SYN_REPORT frame, tp->nfingers_down is 0 when we handle the
touch releases. This changes the tap state to IDLE on the first release and
then logs a bug when the remaining touches are released while the touchpad is
in IDLE.

Avoid this by counting the fingers separately for the tap state, this way we
can count up/down with the down/up events as we process them for the tapping
state machine.

This also adds tests for 4 and 5-finger tapping which is how the bug was
discovered in the first place.

https://bugs.freedesktop.org/show_bug.cgi?id=89800

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-08 11:42:53 +02:00
Peter Hutterer
7ea7746c77 test: add the Razer BlackWidow keyboard device
This device has a couple of axes (fake MT) and a wheel. The device itself
exports 4 nodes, this device is the second node, the most problematic one.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-08 11:42:50 +02:00
Peter Hutterer
55823f2350 test: adjust scroll wheel test for HWHEEL-only devices
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-04-08 11:42:44 +02:00
Peter Hutterer
0e262e55bc evdev: reject devices with a min == max axis range
Except for a few axes where this may be correct, a min == max axis range
indicates a broken kernel driver. To avoid potential divisions by zero when
scaling this axis later, reject such a device outright.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-23 14:24:27 +10:00
Peter Hutterer
ee376b0b56 Revert "touchpad: parse the TOUCHPAD_RESOLUTION property"
This reverts commit 0e64837f30.

Rather than a customized touchpad property, let udev handle this and set the
absinfo struct during the normal setup procedures. No need for libinput to
have a custom workaround here.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-20 11:09:05 +10:00
Peter Hutterer
b69905deef test: add accel test for direction change
Make sure that if we go in one direction, then change flip over to the other
direction we actually stop going into that direction, and the delta is lower
than whatever the previous delta was (i.e. acceleration resets).

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-19 13:01:30 +10:00
Peter Hutterer
0e64837f30 touchpad: parse the TOUCHPAD_RESOLUTION property
Not all touchpad kernel drivers supply the x/y resolution. Let the udev hwdb
fix this up where possible and read the value from it.

This is intentionally only used on touchpads, touchscreen devices without
resolution should be considered buggy and fixed in the kernel.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-17 15:13:55 +10:00
Peter Hutterer
edd534807d evdev: add evdev_reject_device to reject a couple of oddball devices
We really don't need to deal with devices that have x but not y or vice versa.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-17 15:13:55 +10:00
Peter Hutterer
7f28b714d8 Replace event type check switch statements with a helper macro/function
The helper function now prints an error message if the event type passed is
not allowed.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-16 08:07:38 +10:00
Peter Hutterer
44f7446b2a test: abort() for invalid logging priorities
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-16 08:07:37 +10:00
Hans de Goede
db6f1b556a litest: Put fingers down closer together for 2fg scroll tests
The current default start location for the 2fg scroll tests: 47%, 50% and
53%, 50% are further than 3cm apart on the wacom-intuos-finger test device,
causing test failures when pinch gesture support gets added.

This fixes this, and also switches the fingers in the
touchpad_2fg_scroll_slow_distance and touchpad_trackpoint_buttons_2fg_scroll
tests to the default locations rather than putting them pretty far apart.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-03-13 11:29:48 +10:00
Hans de Goede
a8eb6c84a2 litest: Add a litest_touch_move_two_touches helper function
Currently all the touchpad 2fg tests move the 2 fingers 1 at a time,
causing a finger motion which looks more like a pinch zoom in followed by
a zoom out than an actual 2fg scroll gesture. Add a helper function which
can move 2 fingers at the same time (more or less), and use this where
relevant.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-03-13 11:28:36 +10:00
Hans de Goede
2ab0db9ee9 litest: Make touchpad_2fg_scroll_slow_distance take resolution into account
Currently touchpad_2fg_scroll_slow_distance always moves the touches 10% of
the touchpad height during the test.

On the wacom-intuos-finger test device this is a much larger distance then on
the synaptics test device, triggering ck_assert(axisval < 5.0) errors with
further patches in this set, this commit fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-03-13 11:28:11 +10:00
Peter Hutterer
1cebdc7a2b touchpad: accumulate the initial scroll edge delta
The previous setting of 10 wasn't 10 mm, it was used against the deltas
normalized to a 1000DPI mouse, i.e. closer to 4mm. It was also also per-event,
so a slow movement or a high-frequency touchpad can struggle to meet the
threshold.

Change the trigger to be ~5 mm from the initial touch down, accumulated until
we either meet the threshold or the timeout expires. The first scroll event
includes the delta since the touch down rather than the most recent delta.
This removes the delay otherwise seen in scrolling and makes the scroll motion
match the finger motion. This accumulated delta only applies when exceeding
the motion threshold, when the timeout triggers the switch to scrolling the
first delta posted is the current delta.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-10 07:09:23 +10:00
Peter Hutterer
37af67c666 test: fix/disable two tap test for semi-mt devices
On a semi-mt device lifting slot 0 before slot 1 makes slots 1 become slot 0
(with the matching coordinate jump), potentially triggering the tap movement
threshold.

On one test we can just swap the release order, the other test we need to
disable (the _inverted version of this test tests the other order anyway).

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-10 07:09:23 +10:00
Peter Hutterer
9b865ba212 touchpad: enable tapping by default on buttonless touchpads
This affects the touch device on graphics tablets.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:49 +10:00
Peter Hutterer
aa3d09932f test: add a Wacom Intuos 5 Finger test device
Works as a touchpad but has no buttons.

Minor change to one of the touchpad tests: because the touch area is so big
the slow-scrolling trigger needs to be adjusted.

And because the device is an external device, the "disable on external mouse"
test needs to be adjusted.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:49 +10:00
Peter Hutterer
f8fae70d0c test: enable tapping before verifying correct tap events
These tests make sure we don't get tapping events in certain situations
(finger movement, timeouts, ...). Tapping must be enabled for that to be a
valid test.

The tests can't work on semi-mt devices because we can't end slots
independently. Disable the tests there.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:49 +10:00
Peter Hutterer
8b633f9de3 test: add a button requirement to a couple of touchpad tests
If we send BTN_LEFT or similar, we need the LITEST_BUTTON capability on the
device.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:49 +10:00
Peter Hutterer
5b9b662b2e test: split 3-finger tap-and-drag test
Split out into a btntool test and a true three-finger test. For consistency,
check the number of slots on all those tests rather than having
litest-device-specific exclusions.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:49 +10:00
Peter Hutterer
19120ef96c test: disable tapping for pure motion tests
No effect, all devices currently have tapping disabled.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-05 13:30:48 +10:00
Peter Hutterer
13afa8e5c7 test: disable tapping for palm detection tests
The event sequences we use for plam detection trigger tap events if enabled by
default. Always disable tapping, a set of tests for tapping in the palm
exclusion zones. Arguably, tapping in the zones should be handled in a
separate set of tests though.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-03-05 13:30:48 +10:00
Peter Hutterer
3927b63207 cosmetic: more duplicate empty line removal
This should be it now, finally...

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-03-02 16:48:51 +10:00
Peter Hutterer
72cc601007 test: add protocol A touch screen tests
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-03-02 12:45:47 +10:00
Hans de Goede
18887f90ee touchpad: Gesture support preparation
Handle everything which is not handled by the tap, (soft)button or edge-scroll
code/statemachines in a unified way. Everything is treated as a X-finger
gesture now, and the action to take on finger movement is decided by
the gesture.finger_count setting. Pointer control now simply is seen as a
1 finger gesture, and 2fg scrolling as a 2fg gesture.

This removed the need for special-casing things like switching back to
pointer mode when lifting a finger in 2fg scrolling mode, and also lays the
groundwork for adding 3+ fg gesture support.

Note that 1 test-case needs to be updated to wait for the finger mode
switching when switching mode while a gesture has already been started.
This is actually an improvement as this stops sending spurious pointer
motion events at the end of 2fg scrolling when not lifting both fingers at
exactly the same time.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-23 10:01:02 +01:00
Peter Hutterer
2840733978 cosmetic: drop more double empty lines
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-23 13:49:10 +10:00
Peter Hutterer
ed0f0bf494 test: fix Coverity complaints
seat_button_count
seat_key_count ... uninitialized variable

t = zalloc
s = zalloc ... dereferencing potential NULL-pointer

d->ntouches_down... side-effect in assertion

Coverity run against the 0.10.0 tag, see
https://scan.coverity.com/projects/4298

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Christian Hartmann <cornogle@googlemail.com>
2015-02-20 10:03:09 +10:00
Peter Hutterer
002ef1635d cosmetic: drop double empty lines
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-20 09:57:39 +10:00
Marek Chalupa
a9f216ab47 add simple symbols leak checker
This patch adds simple script that compares libinput.sym file to the
functions that are marked by LIBINPUT_EXPORT. This script is added
to make check target.

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-13 10:20:44 +10:00
Peter Hutterer
e3a43902f9 Introduce device groups to group logical devices together
Devices like Wacom tablets have multiple event nodes (touch, pad and stylus).
This requires some logical grouping, e.g. setting an Intuos 5 tablet
left-handed effectively turns it upside down. That then applies to both the
stylus and the touch device.

Merging the devices into one struct libinput_device is not feasable, it
complicates the API for little benefit. A caller would still need access to
all subdevices to get udev handles, etc. Some configuration options apply to
the whole device (left-handed) but some (may) only apply to a single subdevice
(calibration, natural scrolling).

Addressing this would make the libinput API unwieldly and hard to use.

Instead, add a device group concept. Each device is a member of a device
group - a singleton for most devices. Wacom tablets will have a single group
across multiple devices, allowing the caller to associate the devices together
if needed.

The API is intentionally very simple and requires the caller to keep track of
groups and which/how many devices are in it. The caller has more powerful
libraries available to do that than we have.

This patch does not address the actual merging of devices into the same
device group, it simply creates a new group for each new device.

[rebased on top of 0.10]
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
2015-02-06 11:08:43 +10:00
Olivier Fourdan
f420c54a99 Fix an abort if the device speed is NaN
When using libinput with xf86-input-libinput, the device speed is
represented as a float passed via X properties.

If a buggy client gives a broken value, the conversions that occur
can cause the value of speed to be NaN (not a number), aka infinity.

In C, any comparison with NaN always gives false, whatever the value.

So that test in libinput_device_config_accel_set_speed():

   (speed < 1.0 || speed > 1.0)

will necessarily return FALSE, defeating the test of range.

However, since since any comparison with NaN is false, the
opposite assert() in accelerator_set_speed():

   (speed >= 1.0 && speed <= 1.0)

will be false as well, thus triggering the abort() and the crash of
the entire X server along with it.

The solution is to use the same construct in both routines, so that
it fails gracefully in libinput_device_config_accel_set_speed().

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-02-06 10:26:04 +10:00
Peter Hutterer
26140aba23 test: switch event conversion tests to use litest devices
Makes the code use more commonly used paths, no real functional changes at
this point. This was using hand-crafted devices as it predates the
litest_add_for_device() helper.

For an upcoming patch to use the udev ID_INPUT_. tags the
event_conversion_key test requires this change: without it the device will be
tagged with ID_INPUT_KEY but not ID_INPUT_KEYBOARD. This could be fixed by
adding all normal keyboard keys to the uinput device but it's easier to just
re-use litest.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-02-04 08:14:08 +10:00
Peter Hutterer
154b3cf749 Don't init pointer acceleration on absolute devices
Note: touchpads have a different backend, we never get here in that case. This
only applies to true absolute pointer devices.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
2015-02-03 10:56:38 +10:00
Peter Hutterer
2a95a8586d test: add pointer acceleration defaults test
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
2015-02-03 10:43:48 +10:00
Peter Hutterer
4ec2947cc9 test: add per-device udev rule support
Don't rely on a magic version tag, instead let a device define a udev rule and
drop that into the udev runtime directory before the device is created.

There are a couple of caveats with this approach: first, since this changes
system-wide state it may cause issues on the device the test suite is run on.
This can be avoided if the udev rules have filter patterns that ensure only
test devices are affected.

Second, the check test suite aborts but it doesn't run the teardown() function
if a test fails. So far this wasn't a problem since uinput devices disappear
whenever we exit. The rules files will hang around though, so an unchecked
fixture was added to delete all litest-foo.rules files before and after a test
case starts. Unchecked fixtures are run regardless of the exit status of the
test but run in the same address space - i.e. no ck_assert() usage.

Also unchecked fixtures are only run once per test-case, not once per test
function. For us, that means they're only run once per device (we use the
devices as test case), i.e. if a test fails and the udev rule isn't tidied up,
the next test may be unpredictable. This shouldn't matter too much though.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2015-02-03 10:34:26 +10:00