ext.bwcTaskName = { Version version ->
  return "v${version}#bwcTest"
}

def bwcTestSnapshots = tasks.register("bwcTestSnapshots") {
  if (project.bwc_tests_enabled) {
    dependsOn tasks.matching { task -> BuildParams.bwcVersions.unreleased.any { version -> bwcTaskName(version) == task.name } }
  }
}

tasks.register("bwcTest") {
  description = 'Runs backwards compatibility tests.'
  group = 'verification'

  - job-description: "Testing of the Elasticsearch %BRANCH% branch backwards compatibility matrix.\n"
  - matrix-yaml-file: ".ci/bwcVersions"
  - matrix-variable: BWC_VERSION

            JAVA15_HOME=$HOME/.java/openjdk15
      - shell: |
          #!/usr/local/bin/runbld --redirect-stderr

-------------------------------------------------
./gradlew bwcTest
-------------------------------------------------

A specific version can be tested as well. For example, to test bwc with
version 5.3.2 run:

-------------------------------------------------
./gradlew v5.3.2#bwcTest
-------------------------------------------------

Use -Dtest.class and -Dtests.method to run a specific bwcTest test.