Send go test coverage output to stdout - send it to S3

Question

I want to send the html for go test -c to stdout, so I can serve the resulting HTML from S3 static assets server.

Something like this:

arti_fact="s3://cm-html/cm-api/$commit_sha"

go test -coverprofile cover.out .
go tool cover -html=cover.out -o /dev/stdout  | aws s3 cp - "$arti_fact"

is there a way to write to stdout without using -o /dev/stdout?

it doesn't... `go tool cover -html=cover.out` opens a web browser — , Jan 24 '20 at 19:53
Can you clarify the question then? You're commenting about `go tool cover` but your question asks about `go test`. — Adrian, Jan 24 '20 at 19:55
i may have updated the question right before you commented, refresh page? — , Jan 24 '20 at 20:01

score 0 · Accepted Answer · answered Feb 05 '20 at 20:04

I believe the way to send golang code coverage info to S3 / GCS is like so:

go test -coverprofile cover.out .
go tool cover -html=cover.out -o /dev/stdout  | gsutil cp - gs://my-bucket/foo

if there is a way to do it without a temporary file, that would be nice. Something like:

go test -coverprofile '/dev/stdout'  | 
go tool cover -html='/dev/stdin' -o '/dev/stdout'  | 
gsutil cp - 'gs://my-bucket/foo'

Send go test coverage output to stdout - send it to S3

1 Answers1