Joe Gallo <******@****.***> 1632326444 -0400

        List<String> actualNames = new ArrayList<>();
        bwcVersions.forPreviousUnreleased(unreleasedVersion -> actualNames.add(unreleasedVersion.gradleProjectPath));
        assertEquals(expectedNAmes, actualNames);
    }

    private void assertUnreleasedBranchNames(List<String> expectedBranches, BwcVersions bwcVersions) {

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

          type: label-expression
          name: os
          values:
            - centos-8-packaging
            - ubuntu-20.04-packaging
      - axis:
          type: yaml
          filename: ".ci/bwcVersions"
          name: "BWC_VERSION"
    builders:
      - inject:
          properties-file: '.ci/java-versions.properties'
          properties-content: |
            JAVA_HOME=$HOME/.java/$ES_BUILD_JAVA

    private final Project project;
    private final Provider<BwcVersions.UnreleasedVersionInfo> unreleasedVersionInfo;
    private final Provider<InternalDistributionBwcSetupPlugin.BwcTaskThrottle> bwcTaskThrottleProvider;

    private Provider<File> checkoutDir;

    public BwcSetupExtension(
            Project project,
            Provider<BwcVersions.UnreleasedVersionInfo> unreleasedVersionInfo,

These are automatically checked out and built from source.
See link:./build-tools-internal/src/main/java/org/elasticsearch/gradle/BwcVersions.java[BwcVersions]
and link:./distribution/bwc/build.gradle[distribution/bwc/build.gradle]
for more information.

When running `./gradlew check`, minimal bwc checks are also run against compatible versions that are not yet released.

            .forPreviousUnreleased(
                (BwcVersions.UnreleasedVersionInfo unreleasedVersion) -> {
                    configureBwcProject(project.project(unreleasedVersion.gradleProjectPath), unreleasedVersion, bwcTaskThrottleProvider);
                }
            );
    }

    private void configureBwcProject(
        Project project,
        BwcVersions.UnreleasedVersionInfo versionInfo,

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'

                );
            }
            return null;
        }));

        resolutions.register("bwc", distributionResolution -> distributionResolution.setResolver((project, distribution) -> {
            BwcVersions.UnreleasedVersionInfo unreleasedInfo = BuildParams.getBwcVersions().unreleasedInfo(Version.fromString(distribution.getVersion()));
            if (unreleasedInfo != null) {
                if (distribution.getBundledJdk() == false) {

        buildFile << """
            import org.elasticsearch.gradle.Version;
            apply plugin: org.elasticsearch.gradle.internal.InternalBwcGitPlugin

            bwcGitConfig {
                 bwcVersion = project.provider { Version.fromString("7.9.1") }
                 bwcBranch = project.provider { "7.x" }
                 checkoutDir = project.provider{file("build/checkout")}
            }
        """