#   \      \
#    \      \
#     ----- 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 '

#   \      \
#    \      \
#     ----- 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")

}
// end::use_bom_rule[]
} else {
// tag::use_rule[]
dependencies {
    components.all<JacksonAlignmentRule>()
}
// end::use_rule[]
// tag::enforced_platform[]
dependencies {
    // Forcefully downgrade the virtual Jackson platform to 2.8.9
    implementation(enforcedPlatform("com.fasterxml.jackson:jackson-virtual-platform:2.8.9"))
}
// end::enforced_platform[]
}

// tag::bom-alignment-rule[]

 */
package org.gradle.integtests

import org.gradle.integtests.fixtures.CrossVersionIntegrationSpec

class JavaProjectCrossVersionIntegrationTest extends CrossVersionIntegrationSpec {
    def "can upgrade and downgrade Gradle version used to build Java project"() {
        given:
        buildFile << """
apply plugin: 'java'

task custom(type: org.gradle.CustomTask)
        """

        and:

#
# In particular, if the module that previously provided the package has a
# matching version, but does not itself match the pattern and contains no
# matching packages, we should not change its version. (We should *not* downgrade
# module example.net/split to v0.1.0, despite the fact that
# example.net/split v0.2.0 currently provides the package with the requested path.)
#
# TODO(#27899): Maybe we should resolve the ambiguities by upgrading.

}
// end::use_bom_rule[]
} else {
// tag::use_rule[]
dependencies {
    components.all(JacksonAlignmentRule)
}
// end::use_rule[]
// tag::enforced_platform[]
dependencies {
    // Forcefully downgrade the virtual Jackson platform to 2.8.9
    implementation enforcedPlatform('com.fasterxml.jackson:jackson-virtual-platform:2.8.9')
}
// end::enforced_platform[]
}

// tag::bom-alignment-rule[]

    }
  }

  companion object {
    /**
     * The cipher suite used during TLS connection fallback to indicate a fallback. See
     * https://tools.ietf.org/html/draft-ietf-tls-downgrade-scsv-00
     */
    const val TLS_FALLBACK_SCSV = "TLS_FALLBACK_SCSV"
  }

        succeeds("dependencies", "--configuration", "checkstyle")
        output.contains "com.puppycrawl.tools:checkstyle:"

        when:
        buildFile << """
            dependencies {
                //downgrade version:
                checkstyle "com.puppycrawl.tools:checkstyle:5.5"
            }
        """

        then:
        fails("check")
        failure.assertHasErrorOutput("Name 'class1' must match pattern")