Each test needs a dedicated dbus session as the test needs to register
services (e.g. kglobalaccel) and might fail if that cannot be registered.
Due to the wrapping in another command the test need to make sure that
any process they start terminates before them. E.g. the activities test
must stop kactivitymanagerd in cleanupTestCase, otherwise the test times
out.
client->isOnActivity("foo") will return true if the client is on no
activities, as that's the equivalent of saying we are on all activities.
In our case we do want to check activities() shows the right thing.
Verifies the condition from D1982 with expected_fail. That is sets
a Client on non existing activities and expects that it should be on
all activities.
