=== RUN   TestLen
--- PASS: TestLen (0.00s)
=== RUN   TestRemove
--- PASS: TestRemove (0.00s)
=== RUN   TestClear
--- PASS: TestClear (0.00s)
=== RUN   TestCopy
--- PASS: TestCopy (0.00s)
=== RUN   TestAddAll
--- PASS: TestAddAll (0.00s)
=== RUN   TestIntersectWith
--- PASS: TestIntersectWith (0.00s)
=== RUN   TestDifferenceWith
--- PASS: TestDifferenceWith (0.00s)
=== RUN   TestSymmetricDifference
--- PASS: TestSymmetricDifference (0.00s)
=== RUN   Example_one
--- PASS: Example_one (0.00s)
=== RUN   Example_two
--- PASS: Example_two (0.00s)
PASS
ok  	intset	(cached)