PollConvertSqlToDbMockExpect exposed for poll package tests.

SetupMockDB should always be followed by a call to the closeDbFunc, like so: mock, db, closeDbFunc := SetupMockDB(t) defer closeDbFunc().

SetupMockDBPoll should always be followed by a call to the closeDbFunc, like so: mock, db, closeDbFunc := SetupMockDBPoll(t) defer closeDbFunc().

PollId there can be only one.

TestEventSourceValid EventSource is lower case to match case sent by loggly.