Since we so far we had no duplicated-check for prints in fprintd an user
may have enrolled the same print for multiple accounts or even for
different fingers, so we need to simulate this case.
Given that fprintd may not allow to enroll duplicated prints soon, it's
better to just copy the storage value so that we simulate a duplicated
enrollment in the past.
Allow to enroll multiple data in a single shot so that we don't have to
do it for each user, and add a test that uses it to match each possible
combination.
Some tests were delaying VerifyStop by not reporting the finger status
in the image driver, we can do the same using sleeps in the virtual
device driver, so let's reimplement such calls
Now that FPrintdVirtualStorageDeviceBaseTest is a
FPrintdVirtualDeviceBaseTest we can implement the needed `send_*`
functions that we use in the tests in order to get easily an interface
that can be used to repeat all the tests we've already written with the
new virtual device.
To do this, we've only to create new test classes that use the
FPrintdVirtualStorageDeviceBaseTest as main base class and that
also implement the test class.
When a device has reported the verification status the client should
call VerifyStop to stop the device, however this under the hood may lead
to a premature cancellation, causing the device not to react as expected
in case the finger is still on the sensor or in case it may return to us
some errors that we may want to handle (like the data-missing one).
So, in case we are about to stop the verification and the operation is
still in process, wait for a maximum timeout before proceed to the
cancellation.
However, while waiting, the action may be also cancelled because of a
call to Release() or because the client vanished, and in such case we
have to ensure that the current invocation is saved for being invoked by
stoppable_action_completed() when callback will return. That will also
unset it, and that's a clear indication for us that it has been already
consumed, and thus that we can just return doing nothing else.
Fixes: #100
Some tests may have different behaviors depending on the CPU load when
using parallel tests, so async results could arrive in different order.
Then we need to accept multiple results:
- A specific exception has to happen all the times
- One of the accepted exception has to happen all the times
- No exception or one of the allowed exception may happen
Depending on the test, use one of the possible strategies.
As per GDBus we can now get async calls (from the same client) happening
while we're still processing a previous request, so we need to ensure
that we react properly.
In case we get concurrent requests on EnrollStart/EnrollStop we'd just
continue with the operation, making the first processed request to start
the process and the second to hang (in code before the introduction of
stoppable_action_stop()) or to crash (in the current code).
So in such case we should always check that we're not handling already
the request, by checking priv->current_cancel_invocation value.
Add tests to verify the race.
Add a method to delete only a Fingerprint for a device, this is required
by they g-c-c UI design and at the same time it reflects the libfprint
API, where so far only a fingerprint at time can be deleted.
libfprint v1.90.4 introduced a new finger status API to expose to the UI
the finger status on sensor.
Add two new properties to the Device interface that represent the
possible values.
Add new tests.
When multiple devices are available PAM module will just pick the first
one, even if it has not enrolled fingers.
Since this can't be user configured (yet) we can be a bit smarter and
select the device that has more fingerprints configured for the user.
In the usual test we cancel the operation immediately by calling
VerifyStop. This (often) tests the case where we don't end up restarting
the Verify operation internally.
We can easily force fprintd to have restarted already internally, so add
a test that does so by sleeping a bit. This should give us a slightly
higher branch coverage in the verify_cb/identify_cb tests.
