Run all benchmarks
$ go test -bench=.
goos: linux
goarch: amd64
pkg: github.com/ayoisaiah/random
cpu: Intel(R) Core(TM) i7-7560U CPU @ 2.40GHz
BenchmarkPrimeNumbers-4 14588 82798 ns/op
PASS
ok github.com/ayoisaiah/random 2.091s
Skip unit tests - -run specific which unit tests to execute, using ^# filters out all unit tests
$ go test -bench=. -count 5 -run=^#
-benchtime=10s - run for 10s
-benchmem - include memory alloc