Helper function/class to sensor cts test

  * sensorTypeShortString: convert sensor type constant to short,
    human readable string.

  * TestResultCollector: collects multiple test failures and present
    them once at the end.

  * bytesToHex: convert bytes array to hex string for debugging.

Test: compiles
Change-Id: I1a574a49836064eab49e75cca1c9de47b0a165d3
1 file changed