src/cmd/go/testdata/script/mod_tidy_version.txt - go - Git at Google

 # https://golang.org/issue/45094: 'go mod tidy' now accepts a '-go' flag
 # to change the language version in use.
 #
 # The package import graph used in this test looks like:
 #
 # m --- a --- b
 #             |
 #             b_test --- c
 #                        |
 #                        c_test --- d
 #
 # The module diagram looks like:
 #
 # m --- a --- b
 # |
 # + --- c
 # |
 # + --- d
 #
 # Module b omits its dependency on c, and module c omits its dependency on d.
 #
 # In go 1.15, the tidy main module must require a (because it is direct),
 # c (because it is a missing test dependency of an imported package),
 # and d (because it is a missing transitive test dependency).
 #
 # In go 1.16, the tidy main module can omit d because it is no longer
 # included in "all".
 #
 # In go 1.17, the main module must explicitly require b
 # (because it is transitively imported by the main module).

 cp go.mod go.mod.orig

 	# Pretend we're a release version so that we can theoretically
 	# write our version in toolchain lines.
 env goversion=1.99.0
 env TESTGO_VERSION=go${goversion}

 # An invalid argument should be rejected.

 ! go mod tidy -go=bananas
 stderr '^invalid value "bananas" for flag -go: expecting a Go version like "'$goversion'"$'
 cmp go.mod go.mod.orig

 ! go mod tidy -go=0.9
 stderr '^invalid value "0.9" for flag -go: expecting a Go version like "'$goversion'"$'

 ! go mod tidy -go=2000.0
 stderr '^invalid value "2000.0" for flag -go: maximum supported Go version is '$goversion'$'


 # Supported versions should change the go.mod file to be tidy according to the
 # indicated version.

 go mod tidy -go=1.15
 cmp go.mod go.mod.115

 go mod tidy
 cmp go.mod go.mod.115


 go mod tidy -go=1.16
 cmp go.mod go.mod.116

 go mod tidy
 cmp go.mod go.mod.116


 go mod tidy -go=1.17
 cmp go.mod go.mod.117

 go mod tidy
 cmp go.mod go.mod.117


 # If we downgrade back to 1.15, we should re-resolve d to v0.2.0 instead
 # of the original v0.1.0 (because the original requirement is lost).

 go mod tidy -go=1.15
 cmp go.mod go.mod.115-2


 # -go= (with an empty argument) maintains the existing version or adds the
 #  default version (just like omitting the flag).

 go mod tidy -go=''
 cmp go.mod go.mod.115-2

 cp go.mod.orig go.mod
 go mod tidy -go=''
 cmpenv go.mod go.mod.latest

 # Repeat with go get go@ instead of mod tidy.

 # Go 1.16 -> 1.17 should be a no-op.
 cp go.mod.116 go.mod
 go get go@1.16
 cmp go.mod go.mod.116

 # Go 1.17 -> 1.16 should leave b (go get is not tidy).
 cp go.mod.117 go.mod
 go get go@1.16
 cmp go.mod go.mod.116from117

 # Go 1.15 -> 1.16 should leave d (go get is not tidy).
 cp go.mod.115 go.mod
 go get go@1.16
 cmp go.mod go.mod.116from115

 # Go 1.16 -> 1.17 should add b.
 cp go.mod.116 go.mod
 go get go@1.17
 stderr '^\tnote: expanded dependencies to upgrade to go 1.17 or higher; run ''go mod tidy'' to clean up'
 cmp go.mod go.mod.117

 # Go 1.16 -> 1.15 should add d,
 # but 'go get' doesn't load enough packages to know that.
 # (This leaves the module untidy, but the user can fix it by running 'go mod tidy'.)
 cp go.mod.116 go.mod
 go get go@1.15 toolchain@none
 cmp go.mod go.mod.115from116
 go mod tidy
 cmp go.mod go.mod.115-2

 # Updating the go line to 1.21 or higher also updates the toolchain line,
 # only if the toolchain is higher than what would be implied by the go line.

 cp go.mod.117 go.mod
 go mod tidy -go=$goversion
 cmpenv go.mod go.mod.latest

 cp go.mod.117 go.mod
 go mod tidy -go=1.21.0  # lower than $goversion
 cmpenv go.mod go.mod.121toolchain


 -- go.mod --
 module example.com/m

 require example.net/a v0.1.0

 require (
 	example.net/c v0.1.0 // indirect
 	example.net/d v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- m.go --
 package m

 import _ "example.net/a"

 -- go.mod.115 --
 module example.com/m

 go 1.15

 require example.net/a v0.1.0

 require (
 	example.net/c v0.1.0 // indirect
 	example.net/d v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.115from116 --
 module example.com/m

 go 1.15

 require example.net/a v0.1.0

 require example.net/c v0.1.0 // indirect

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.116from115 --
 module example.com/m

 go 1.16

 require example.net/a v0.1.0

 require (
 	example.net/c v0.1.0 // indirect
 	example.net/d v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.115-2 --
 module example.com/m

 go 1.15

 require example.net/a v0.1.0

 require (
 	example.net/c v0.1.0 // indirect
 	example.net/d v0.2.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.116 --
 module example.com/m

 go 1.16

 require example.net/a v0.1.0

 require example.net/c v0.1.0 // indirect

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.117 --
 module example.com/m

 go 1.17

 require example.net/a v0.1.0

 require (
 	example.net/b v0.1.0 // indirect
 	example.net/c v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.116from117 --
 module example.com/m

 go 1.16

 require example.net/a v0.1.0

 require (
 	example.net/b v0.1.0 // indirect
 	example.net/c v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.latest --
 module example.com/m

 go $goversion

 require example.net/a v0.1.0

 require (
 	example.net/b v0.1.0 // indirect
 	example.net/c v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- go.mod.121toolchain --
 module example.com/m

 go 1.21.0

 toolchain $TESTGO_VERSION

 require example.net/a v0.1.0

 require (
 	example.net/b v0.1.0 // indirect
 	example.net/c v0.1.0 // indirect
 )

 replace (
 	example.net/a v0.1.0 => ./a
 	example.net/a v0.2.0 => ./a
 	example.net/b v0.1.0 => ./b
 	example.net/b v0.2.0 => ./b
 	example.net/c v0.1.0 => ./c
 	example.net/c v0.2.0 => ./c
 	example.net/d v0.1.0 => ./d
 	example.net/d v0.2.0 => ./d
 )
 -- a/go.mod --
 module example.net/a

 go 1.15

 require example.net/b v0.1.0
 -- a/a.go --
 package a

 import _ "example.net/b"

 -- b/go.mod --
 module example.net/b

 go 1.15
 -- b/b.go --
 package b
 -- b/b_test.go --
 package b_test

 import _ "example.net/c"

 -- c/go.mod --
 module example.net/c

 go 1.15
 -- c/c.go --
 package c
 -- c/c_test.go --
 package c_test

 import _ "example.net/d"

 -- d/go.mod --
 module example.net/d

 go 1.15
 -- d/d.go --
 package d
	# https://golang.org/issue/45094: 'go mod tidy' now accepts a '-go' flag
	# to change the language version in use.
	#
	# The package import graph used in this test looks like:
	#
	# m --- a --- b
	# \|
	# b_test --- c
	# \|
	# c_test --- d
	#
	# The module diagram looks like:
	#
	# m --- a --- b
	# \|
	# + --- c
	# \|
	# + --- d
	#
	# Module b omits its dependency on c, and module c omits its dependency on d.
	#
	# In go 1.15, the tidy main module must require a (because it is direct),
	# c (because it is a missing test dependency of an imported package),
	# and d (because it is a missing transitive test dependency).
	#
	# In go 1.16, the tidy main module can omit d because it is no longer
	# included in "all".
	#
	# In go 1.17, the main module must explicitly require b
	# (because it is transitively imported by the main module).

	cp go.mod go.mod.orig

	# Pretend we're a release version so that we can theoretically
	# write our version in toolchain lines.
	env goversion=1.99.0
	env TESTGO_VERSION=go${goversion}

	# An invalid argument should be rejected.

	! go mod tidy -go=bananas
	stderr '^invalid value "bananas" for flag -go: expecting a Go version like "'$goversion'"$'
	cmp go.mod go.mod.orig

	! go mod tidy -go=0.9
	stderr '^invalid value "0.9" for flag -go: expecting a Go version like "'$goversion'"$'

	! go mod tidy -go=2000.0
	stderr '^invalid value "2000.0" for flag -go: maximum supported Go version is '$goversion'$'


	# Supported versions should change the go.mod file to be tidy according to the
	# indicated version.

	go mod tidy -go=1.15
	cmp go.mod go.mod.115

	go mod tidy
	cmp go.mod go.mod.115


	go mod tidy -go=1.16
	cmp go.mod go.mod.116

	go mod tidy
	cmp go.mod go.mod.116


	go mod tidy -go=1.17
	cmp go.mod go.mod.117

	go mod tidy
	cmp go.mod go.mod.117


	# If we downgrade back to 1.15, we should re-resolve d to v0.2.0 instead
	# of the original v0.1.0 (because the original requirement is lost).

	go mod tidy -go=1.15
	cmp go.mod go.mod.115-2


	# -go= (with an empty argument) maintains the existing version or adds the
	# default version (just like omitting the flag).

	go mod tidy -go=''
	cmp go.mod go.mod.115-2

	cp go.mod.orig go.mod
	go mod tidy -go=''
	cmpenv go.mod go.mod.latest

	# Repeat with go get go@ instead of mod tidy.

	# Go 1.16 -> 1.17 should be a no-op.
	cp go.mod.116 go.mod
	go get go@1.16
	cmp go.mod go.mod.116

	# Go 1.17 -> 1.16 should leave b (go get is not tidy).
	cp go.mod.117 go.mod
	go get go@1.16
	cmp go.mod go.mod.116from117

	# Go 1.15 -> 1.16 should leave d (go get is not tidy).
	cp go.mod.115 go.mod
	go get go@1.16
	cmp go.mod go.mod.116from115

	# Go 1.16 -> 1.17 should add b.
	cp go.mod.116 go.mod
	go get go@1.17
	stderr '^\tnote: expanded dependencies to upgrade to go 1.17 or higher; run ''go mod tidy'' to clean up'
	cmp go.mod go.mod.117

	# Go 1.16 -> 1.15 should add d,
	# but 'go get' doesn't load enough packages to know that.
	# (This leaves the module untidy, but the user can fix it by running 'go mod tidy'.)
	cp go.mod.116 go.mod
	go get go@1.15 toolchain@none
	cmp go.mod go.mod.115from116
	go mod tidy
	cmp go.mod go.mod.115-2

	# Updating the go line to 1.21 or higher also updates the toolchain line,
	# only if the toolchain is higher than what would be implied by the go line.

	cp go.mod.117 go.mod
	go mod tidy -go=$goversion
	cmpenv go.mod go.mod.latest

	cp go.mod.117 go.mod
	go mod tidy -go=1.21.0 # lower than $goversion
	cmpenv go.mod go.mod.121toolchain


	-- go.mod --
	module example.com/m

	require example.net/a v0.1.0

	require (
	example.net/c v0.1.0 // indirect
	example.net/d v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- m.go --
	package m

	import _ "example.net/a"

	-- go.mod.115 --
	module example.com/m

	go 1.15

	require example.net/a v0.1.0

	require (
	example.net/c v0.1.0 // indirect
	example.net/d v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.115from116 --
	module example.com/m

	go 1.15

	require example.net/a v0.1.0

	require example.net/c v0.1.0 // indirect

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.116from115 --
	module example.com/m

	go 1.16

	require example.net/a v0.1.0

	require (
	example.net/c v0.1.0 // indirect
	example.net/d v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.115-2 --
	module example.com/m

	go 1.15

	require example.net/a v0.1.0

	require (
	example.net/c v0.1.0 // indirect
	example.net/d v0.2.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.116 --
	module example.com/m

	go 1.16

	require example.net/a v0.1.0

	require example.net/c v0.1.0 // indirect

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.117 --
	module example.com/m

	go 1.17

	require example.net/a v0.1.0

	require (
	example.net/b v0.1.0 // indirect
	example.net/c v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.116from117 --
	module example.com/m

	go 1.16

	require example.net/a v0.1.0

	require (
	example.net/b v0.1.0 // indirect
	example.net/c v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.latest --
	module example.com/m

	go $goversion

	require example.net/a v0.1.0

	require (
	example.net/b v0.1.0 // indirect
	example.net/c v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- go.mod.121toolchain --
	module example.com/m

	go 1.21.0

	toolchain $TESTGO_VERSION

	require example.net/a v0.1.0

	require (
	example.net/b v0.1.0 // indirect
	example.net/c v0.1.0 // indirect
	)

	replace (
	example.net/a v0.1.0 => ./a
	example.net/a v0.2.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c
	example.net/c v0.2.0 => ./c
	example.net/d v0.1.0 => ./d
	example.net/d v0.2.0 => ./d
	)
	-- a/go.mod --
	module example.net/a

	go 1.15

	require example.net/b v0.1.0
	-- a/a.go --
	package a

	import _ "example.net/b"

	-- b/go.mod --
	module example.net/b

	go 1.15
	-- b/b.go --
	package b
	-- b/b_test.go --
	package b_test

	import _ "example.net/c"

	-- c/go.mod --
	module example.net/c

	go 1.15
	-- c/c.go --
	package c
	-- c/c_test.go --
	package c_test

	import _ "example.net/d"

	-- d/go.mod --
	module example.net/d

	go 1.15
	-- d/d.go --
	package d