def "does not watch when there's nothing to watch"() {
        def watchable = Mock(WatchableHierarchies)
        when:
        def watched = resolveWatchedFiles(watchable, buildHierarchy([]))
        then:
        rootsOf(watched) == []
        1 * watchable.stream() >> Stream.of()
    }

    def "watches empty directory"() {
        def watchable = Mock(WatchableHierarchies)
        def dir = new File("empty").absoluteFile

	err := os.WriteFile(watchFile1, []byte("foo: bar\n"), 0o640)
	g.Expect(err).NotTo(HaveOccurred())

	watchFile2 := path.Join(watchDir, "test2.conf")
	err = os.WriteFile(watchFile2, []byte("foo: baz\n"), 0o640)
	g.Expect(err).NotTo(HaveOccurred())

	return watchFile1, watchFile2
}

// newSymlinkedWatchFile simulates the behavior of k8s configmap/secret.
// Path structure looks like:
//

import java.io.File;
import java.util.Collection;
import java.util.List;

/**
 * Updater for hierarchical file watchers.
 *
 * For hierarchical watchers, we can use the registered watchable hierarchies as watched directories.
 * Build root directories are always watchable hierarchies.
 * Watching the build root directories is better since they are less likely to be deleted and

    }

    enum Type {
        CREATED,
        MODIFIED,
        REMOVED,
        INVALIDATED,
        OVERFLOW
    }

    /**
     * Registers a watchable hierarchy.
     *
     * The watcher registry will only watch for changes in watchable hierarchies.
     *
     * @throws WatchingNotSupportedException when the native watchers can't be updated.
     */

 * <p>
 * The following terms are worth distinguishing between:
 * </p>
 *
 * <dl>
 *     <dt>file system hierarchy</dt>
 *     <dd>A directory on the file system with all its descendants.</dd>
 *
 *     <dt>watchable hierarchies</dt>
 *     <dd>The list of file system hierarchies Gradle might want to watch if interesting content appears in the VFS for them.

     */
    boolean afterBuildStarted(WatchMode watchingEnabled, VfsLogging vfsLogging, WatchLogging watchLogging, BuildOperationRunner buildOperationRunner);

    /**
     * Register a watchable hierarchy.
     *
     * Only locations within watchable hierarchies will be watched for changes.
     * This method is first called for the root directory of the root project.

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Package watch contains a generic watchable interface, and a fake for
// testing code that uses the watch interface.

            LOGGER.debug("Did not find watchable hierarchy to arm probe for: {}", watchableHierarchy);
        }
    }

    @Override
    public void disarmWatchProbe(File watchableHierarchy) {
        WatchProbe probe = watchProbesByHierarchy.get(watchableHierarchy);
        if (probe != null) {
            probe.disarm();
        } else {

      - list
      - create
      - update
      - delete
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - ipamconfigs
    verbs:
      - get
  # Block affinities must also be watchable by confd for route aggregation.
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - blockaffinities
    verbs:
      - watch

        0 * _
    }

    def "removes content on unsupported file systems at the end of the build"() {
        def watchableHierarchy = file("watchable").createDir()
        def watchableContent = watchableHierarchy.file("some/dir/file.txt").createFile()
        def unsupportedFileSystemMountPoint = watchableHierarchy.file("unsupported")