go get all@patch
go list -m all
stdout '^patch.example.com/direct v1.0.1'
stdout '^patch.example.com/indirect v1.0.1'
stdout '^patch.example.com/depofdirectpatch v1.0.0'

# ...but 'all@patch' should fail if any of the affected modules do not already
# have a selected version.
cp go.mod.orig go.mod
go mod edit -droprequire=patch.example.com/direct
cp go.mod go.mod.dropped
! go get all@patch

# Start at v0.1.1-0.20190429073117-b5426c86b553
go get example.com/pseudoupgrade@b5426c8
go list -m -u all
stdout '^example.com/pseudoupgrade v0.1.1-0.20190429073117-b5426c86b553$'

# 'get -u' should not downgrade to the (lower) tagged version.
go get -u
go list -m -u all
stdout '^example.com/pseudoupgrade v0.1.1-0.20190429073117-b5426c86b553$'

# 'get example.com/pseudoupgrade@upgrade' should not downgrade.

go list -f {{.Dir}} -tags tools -e all
stdout '^'$WORK'[/\\]auto$'
stdout '^'$WORK'[/\\]auto[/\\]vendor[/\\]example.com[/\\]printversion$'
stdout '^'$WORK'[/\\]auto[/\\]vendor[/\\]example.com[/\\]version$'

! go list -m all
stderr 'go: can''t compute ''all'' using the vendor directory\n\t\(Use -mod=mod or -mod=readonly to bypass.\)'

! go list -m -f '{{.Dir}}' all

# go list all should work with GOOS=linux because all packages build on Linux
env GOOS=linux
env GOARCH=amd64
go list all

# go list all should work with GOOS=darwin, but it used to fail because
# in the absence of //go:build support, p looked like it needed q
# (p_test.go was not properly excluded), and q was Linux-only.
#
# Also testing with r and s that +build lines keep working.
env GOOS=darwin
go list all

-- go.mod --
go 1.17
module m

stdout '^example.com/u.test$'
stdout '^example.com/u_test \[example.com/u.test\]$'

# 'go list -m all' should cover all of the modules providing packages in
# 'go list -test -deps all', but should exclude modules d and x,
# which are not relevant to the main module and are outside of the
# lazy-loading horizon.

go list -m -f $MODFMT all
stdout -count=10 '^.'
stdout '^example.com/a$'
stdout '^example.com/b$'

go get -u=patch example.net/a@v0.2.0
go list -m all
stdout '^example.net/a v0.2.0 '
stdout '^example.net/b v0.2.1 '


# "-u=patch all" should be equivalent to "all@patch", and should fail if the
# patched versions result in a higher-than-patch upgrade.

cp go.mod.orig go.mod
! go get -u=patch all

### Iterators

The new [iter] package provides the basic definitions for working with
user-defined iterators.

The [slices] package adds several functions that work with iterators:
- [All](/pkg/slices#All) returns an iterator over slice indexes and values.
- [Values](/pkg/slices#Values) returns an iterator over slice elements.
- [Backward](/pkg/slices#Backward) returns an iterator that loops over
  a slice backward.

# When all versions are replaced, we should not look up a deprecation message.
# We will still look up a deprecation message for the replacement.
cp go.mod.allreplaced go.mod
go list -m -u -f '{{.Path}}@{{.Version}} <{{.Deprecated}}>{{with .Replace}} => {{.Path}}@{{.Version}} <{{.Deprecated}}>{{end}}' all
stdout '^example.com/deprecated/a@v1.0.0 <> => example.com/deprecated/b@v1.0.0 <in example.com/deprecated/b@v1.9.0>$'

# packages or any package in "all" respectively.

# 'go mod tidy' in a module at go 1.21 or higher should preserve
# checksums needed to run 'go test all'.
cd m1
go mod tidy

go list -f '{{if eq .ImportPath "example.com/generics"}}{{.Module.GoVersion}}{{end}}' -deps -test example.com/m2/q
stdout 1.18
[!short] go test -o $devnull -c all

cat go.sum

# complain about that. It's a common way to skip testing a package
# entirely.
go test ./main_zero
! stdout 'skipping all tests'
stdout ^ok

# With -v, we'll see the warning from TestMain.
go test -v ./main_zero
stdout 'skipping all tests'
stdout ^ok

# Listing all tests won't actually give a result if TestMain exits. That's okay,
# because this is how TestMain works. If we decide to support -list even when