I would like some function like skipTest() and skipSuite() that would allow me to skip a test or suite without failing it.

If you are in suiteSetup() then you could skip the suite
if you are in test() then you could skip the rest of the suite or the test
if you are in setup() then you could skip the rest of the suite or the test
if you are in tearDown() then you could skip rest of the suite
if you are in suiteTearDown() then you could not skip either