Hi Tong Sun You may use the standard testing package <https://golang.org/pkg/testing/> and compare byte slices <https://golang.org/pkg/bytes/#Compare>. For the source of truth, use current output as expected bytes, either hard-coded in test source, or read from a new folder that you would call "testdata". For the new output to be tested, there are various ways of redirecting the os.Stdout and then read it in a []byte, but the super-clean way (no Stdout, no intermediate file) would be to provide your own (*bytes.Buffer <https://golang.org/pkg/bytes/#Buffer>) to the program processing, which may need to be refactored to write to a configurable io.Writer <https://golang.org/pkg/io/#Writer>. HTH Val
On Thursday, April 13, 2017 at 7:35:42 PM UTC+2, Tong Sun wrote: > > My program works on files, read from input and write to output. > > Is there any ready-made and *light *testing packages that allows me > checking whether the new output is the same as before? > > Thanks > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
