env GO111MODULE=on
cp go.mod.orig go.mod

# relative and absolute paths must be within the main module.
! go get ..
stderr '^go: \.\. \('$WORK'[/\\]gopath\) is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get $WORK
stderr '^go: '$WORK' is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get ../...
stderr '^go: \.\./\.\.\. \('$WORK'[/\\]gopath([/\\]...)?\) is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get $WORK/...
stderr '^go: '$WORK'[/\\]\.\.\. is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'

# @patch and @latest within the main module refer to the current version.
# The main module won't be upgraded, but missing dependencies will be added.
go get rsc.io/x
grep 'rsc.io/quote v1.5.2' go.mod
go get rsc.io/x@upgrade
grep 'rsc.io/quote v1.5.2' go.mod
cp go.mod.orig go.mod
go get rsc.io/x@patch
grep 'rsc.io/quote v1.5.2' go.mod
cp go.mod.orig go.mod


# Upgrading a package pattern not contained in the main module should not
# attempt to upgrade the main module.
go get rsc.io/quote/...@v1.5.1
grep 'rsc.io/quote v1.5.1' go.mod


# The main module cannot be updated to a specific version.
! go get rsc.io@v0.1.0
stderr '^go: can''t request version "v0.1.0" of the main module \(rsc.io\)$'

# A package in the main module can't be upgraded either.
! go get rsc.io/x@v0.1.0
stderr '^go: package rsc.io/x is in the main module, so can''t request version v0.1.0$'

# Nor can a pattern matching packages in the main module.
! go get rsc.io/x/...@latest
stderr '^go: pattern rsc.io/x/... matches package rsc.io/x in the main module, so can''t request version latest$'

-- go.mod.orig --
module rsc.io

go 1.13
-- x/x.go --
package x

import _ "rsc.io/quote"