Some tests run against the host's tracker-store
The Python functional tests have code to start tracker-store from the source tree and manage the instance.
However, the C and Vala testcases in the ipc/ subdirectory run against the system-wide tracker store. This is wrong, the tests should be testing what we just built!
Perhaps the best way to fix this is to adapt the existing Python code so that it can be run from the commandline to start a tracker-store instance from the build tree and then exec() the testcase.