env GO111MODULE=on

go get rsc.io/[email protected]
go list -m all
stdout 'rsc.io/quote v1.5.1'
grep 'rsc.io/quote v1.5.1$' go.mod

# get -u should update dependencies of the package in the current directory
go get -u
grep 'rsc.io/quote v1.5.2$' go.mod
grep 'golang.org/x/text [v0-9a-f\.-]+ // indirect' go.mod

# get -u rsc.io/sampler should update only sampler's dependencies
cp go.mod-v1.5.1 go.mod
go get -u rsc.io/sampler
grep 'rsc.io/quote v1.5.1$' go.mod
grep 'golang.org/x/text [v0-9a-f\.-]+ // indirect' go.mod

# move to a pseudo-version after any tags
go get rsc.io/quote@dd9747d
grep 'rsc.io/quote v0.0.0-20180628003336-dd9747d19b04' go.mod

# get -u should not jump off newer pseudo-version to earlier tag
go get -u
grep 'rsc.io/quote v0.0.0-20180628003336-dd9747d19b04' go.mod

# move to earlier pseudo-version
go get rsc.io/quote@e7a685a342
grep 'rsc.io/quote v0.0.0-20180214005133-e7a685a342c0' go.mod

# get -u should jump off earlier pseudo-version to newer tag
go get -u
grep 'rsc.io/quote v1.5.2' go.mod

-- go.mod --
module x
require rsc.io/quote v1.1.0

-- go.mod-v1.5.1 --
module x
require rsc.io/quote v1.5.1

-- use.go --
package use

import _ "rsc.io/quote"