How do you use the benchmark flags for the go (golang) gocheck testing framework? -

how 1 use flag options benchmarks gocheck testing framework? in link provided seems example provide running go test -check.b, however, not provide additional comments on how works hard use it. not find -check in go documentation when did go test nor when did go testflag. in particular want know how use benchmark testing framework better , control how long runs or how many iterations runs etc etc. example in example provide:

func (s *mysuite) benchmarklogic(c *c) {      := 0; < c.n; i++ {          // logic benchmark      }  } 

there variable c.n. how 1 specify variable? through actual program or through go test , flags or command line?

on side note, documentation go testflag did talk -bench regex, benchmem , benchtime t options, however, not talk -check.b option. did try run these options described there didn't notice. gocheck work original options go test?

the main problem see there no clear documentation how use gocheck tool or commands. accidentally gave wrong flag , threw me error message suggesting useful commands need (which limited description):

  -check.b=false: run benchmarks   -check.btime=1s: approximate run time each benchmark   -check.f="": regular expression selecting tests and/or suites run   -check.list=false: list names of tests run   -check.v=false: verbose mode   -check.vv=false: super verbose mode (disables output caching)   -check.work=false: display , not remove test working directory   -gocheck.b=false: run benchmarks   -gocheck.btime=1s: approximate run time each benchmark   -gocheck.f="": regular expression selecting tests and/or suites run   -gocheck.list=false: list names of tests run   -gocheck.v=false: verbose mode   -gocheck.vv=false: super verbose mode (disables output caching)   -gocheck.work=false: display , not remove test working directory   -test.bench="": regular expression select benchmarks run   -test.benchmem=false: print memory allocations benchmarks   -test.benchtime=1s: approximate run time each benchmark   -test.blockprofile="": write goroutine blocking profile named file after execution   -test.blockprofilerate=1: if >= 0, calls runtime.setblockprofilerate()   -test.coverprofile="": write coverage profile named file after execution   -test.cpu="": comma-separated list of number of cpus use each test   -test.cpuprofile="": write cpu profile named file during execution   -test.memprofile="": write memory profile named file after execution   -test.memprofilerate=0: if >=0, sets runtime.memprofilerate   -test.outputdir="": directory in write profiles   -test.parallel=1: maximum test parallelism   -test.run="": regular expression select tests , examples run   -test.short=false: run smaller test suite save time   -test.timeout=0: if positive, sets aggregate time limit tests   -test.v=false: verbose: print additional output 

is writing wrong commands way tool? doesn't have flag or something?

see description_of_testing_flags:

-bench regexp     run benchmarks matching regular expression.     default, no benchmarks run. run benchmarks,     use '-bench .' or '-bench=.'. 

-check.b works same way -test.bench.

e.g. run benchmarks:

go test -check.b=. 

to run specific benchmark:

go test -check.b=benchmarklogic 

more information testing in go can found here