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 get example.com/pseudoupgrade@upgrade
go list -m all

env GO111MODULE=on
[short] skip

# downgrade sampler should downgrade quote
cp go.mod.orig go.mod
go get rsc.io/sampler@v1.0.0
go list -m all
stdout 'rsc.io/quote v1.4.0'
stdout 'rsc.io/sampler v1.0.0'

# downgrade sampler away should downgrade quote further
go get rsc.io/sampler@none
go list -m all
stdout 'rsc.io/quote v1.3.0'

# downgrade should report inconsistencies and not change go.mod
go get rsc.io/quote@v1.5.1
go list -m all

cp go.mod go.mod.orig
go mod tidy
cmp go.mod.orig go.mod

go list -m all
stdout '^example.com/a v0.1.0 '
stdout '^example.com/b v0.3.0 '
stdout '^example.com/c v0.2.0 '

# Downgrading c should also downgrade the b that requires it.

go get example.com/c@v0.1.0
go list -m all
stdout '^example.com/a v0.1.0 '
stdout '^example.com/b v0.2.0 '
stdout '^example.com/c v0.1.0 '

#
# a ---- b ---- d
#
# The module dependency graph originally looks like:
#
# a ---- b.2 ---- d.2
#
# b.1 ---- c.1
#
# If we downgrade module d to version 1, we must downgrade b as well.
# If that downgrade selects b version 1, we will add a new dependency on module c.

cp go.mod go.mod.orig
go mod tidy
cmp go.mod.orig go.mod

go get example.com/d@v0.1.0
go list -m all

#   \      \
#    \      \
#     ----- c.1 ---- d.2
#
# b.1 ---- c.2
#
# If we downgrade module d to version 1, we must downgrade b as well.
# If that downgrade selects b version 1, we will upgrade module c to version 2.

cp go.mod go.mod.orig
go mod tidy
cmp go.mod.orig go.mod

# Downgrading d to version 1 downgrades b, which upgrades c.
go get example.com/d@v0.1.0
go list -m all
stdout '^example.com/b v0.1.0 '

go mod edit -require example.com/retract/self/prev@v1.1.0
go get example.com/retract/self/prev
go list -m example.com/retract/self/prev
stdout '^example.com/retract/self/prev v1.1.0$'

# 'go get pkg' should not downgrade from a retracted version when no higher
# version is available.
cp go.mod.orig go.mod
go mod edit -require example.com/retract/self/prev@v1.9.0
go get example.com/retract/self/prev

go get rsc.io/sampler@none
stderr '^go: downgraded rsc.io/quote v1.5.2 => v1.3.0$'
stderr '^go: removed rsc.io/sampler v1.3.0$'
! stderr '^go get.*golang.org/x/text'
cmp go.mod go.mod.downgrade

# When removing or downgrading a requirement, 'go get' also prints a message
# for explicit dependencies removed as a consequence.
cp go.mod.usequote go.mod
go get rsc.io/quote@v1.5.1
stderr '^go: downgraded rsc.io/quote v1.5.2 => v1.5.1$'

#   \      \
#    \      \
#     ----- c.1 ---- d.2
#
# b.1 ---- c.2
#
# If we downgrade module d to version 1, we must downgrade b as well.
# If that downgrade selects b version 1, we will upgrade module c to version 2.

cp go.mod go.mod.orig
go mod tidy
cmp go.mod.orig go.mod

# Downgrading d to version 1 downgrades b, which upgrades c.
go get -v example.com/d@v0.1.0
go list -m all
stdout '^example.com/b v0.1.0 '

		}
	}

	// kubeadm doesn't support downgrades between two minor versions; e.g. a v1.9 -> v1.7 downgrade is not supported right away
	if newK8sVersion.Minor() < clusterVersion.Minor()-MaximumAllowedMinorVersionDowngradeSkew {
		tooLargeDowngradeSkewErr := errors.Errorf("Specified version to downgrade to %q is too low; kubeadm can downgrade only %d minor version at a time", newK8sVersionStr, MaximumAllowedMinorVersionDowngradeSkew)

        succeeds("dependencies", "--configuration", "pmd")
        output.contains "pmd:pmd-java:"

        when:
        buildFile << """
            dependencies {
                //downgrade version:
                pmd "$testDependency"
            }

            pmd {
                incrementalAnalysis = false
            }
        """.stripIndent()

        then:
        fails("check")