go_tools.slide

Go Tools
11 March 2016

Dinesh Kumar
https://github.com/dineshkumar-cse

* go tool vet
- examines Go source code and reports suspicious constructs
.code src/tools/vet_this.go

* go tool vet .

- result:
  ➜  go vet .
  vet_this.go:7: arg val for printf verb %s of wrong type: int
  vet_this.go:18: suspect or: x != 1 || x != 2

* golint
- Gofmt reformats Go source code, whereas golint prints out style mistakes.
.code src/tools/lint_this.go

* golint .
- result:
   ➜  golint .
   lint_this.go:5:6: exported type Gopher should have comment or be unexported
   lint_this.go:11:2: var someUrl should be someURL

* go test
- Run tests in all packages
    go test $(go list ./...)
- using glide:
    go test $(glide novendor)
.code src/local.sh /START OMIT/,/END OMIT/

* go tool trace
- Trace is a tool for viewing trace files.
.code src/trace/trace_me.go /START OMIT/,/END OMIT/

* go tool pprof
   import _ "net/http/pprof"

- Package pprof serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool.


* References
.link https://github.com/golang/lint golint
.link https://golang.org/cmd/vet/ vet
.link https://golang.org/pkg/net/http/pprof/ http pprof
.link https://golang.org/cmd/trace/ trace
.link https://golang.org/pkg/testing/ go test
.link http://blog.ralch.com/tutorial/golang-tools-inspection/ golang tools

* License

.image ./images/by-sa.png