Tests that merged statistic does not overwrite old statistic

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS Host did not overwrite old prevalent resource value.
PASS Host did not overwrite old very prevalent resource value.
PASS Host did not overwrite old had user interaction value
PASS Host did not overwrite old grandfathered value.
PASS successfullyParsed is true

TEST COMPLETE