import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.Optional;

public abstract class AbstractCaptureStateBeforeExecutionStep<C extends PreviousExecutionContext, R extends CachingResult> extends BuildOperationStep<C, R> {
    private static final Logger LOGGER = LoggerFactory.getLogger(AbstractCaptureStateBeforeExecutionStep.class);

    private final ClassLoaderHierarchyHasher classLoaderHierarchyHasher;

import org.gradle.internal.execution.UnitOfWork

class CaptureNonIncrementalStateBeforeExecutionStepTest extends AbstractCaptureStateBeforeExecutionStepTest<PreviousExecutionContext> {

    AbstractCaptureStateBeforeExecutionStep<PreviousExecutionContext, CachingResult> step
        = new CaptureNonIncrementalStateBeforeExecutionStep(buildOperationRunner, classloaderHierarchyHasher, delegate)

    def setup() {

import org.gradle.internal.snapshot.FileSystemSnapshot;

import javax.annotation.Nullable;

public class CaptureIncrementalStateBeforeExecutionStep<C extends PreviousExecutionContext, R extends CachingResult> extends AbstractCaptureStateBeforeExecutionStep<C, R> {
    private final OutputSnapshotter outputSnapshotter;
    private final OverlappingOutputDetector overlappingOutputDetector;

    public CaptureIncrementalStateBeforeExecutionStep(

import org.gradle.internal.snapshot.FileSystemSnapshot;

import javax.annotation.Nullable;

public class CaptureNonIncrementalStateBeforeExecutionStep<C extends PreviousExecutionContext, R extends CachingResult> extends AbstractCaptureStateBeforeExecutionStep<C, R> {

    public CaptureNonIncrementalStateBeforeExecutionStep(
        BuildOperationRunner buildOperationRunner,
        ClassLoaderHierarchyHasher classLoaderHierarchyHasher,

    def outputSnapshotter = Mock(OutputSnapshotter)
    def overlappingOutputDetector = Mock(OverlappingOutputDetector)

    AbstractCaptureStateBeforeExecutionStep<PreviousExecutionContext, CachingResult> step
        = new CaptureIncrementalStateBeforeExecutionStep(buildOperationRunner, classloaderHierarchyHasher, outputSnapshotter, overlappingOutputDetector, delegate)

    def inputFingerprinter = Mock(InputFingerprinter)
    def implementationSnapshot = ImplementationSnapshot.of("MyWorkClass", TestHashCodes.hashCodeFrom(1234))

    abstract AbstractCaptureStateBeforeExecutionStep<PreviousExecutionContext, CachingResult> getStep()

    def setup() {
        _ * work.inputFingerprinter >> inputFingerprinter
    }

    def "no state is captured when instructed to skip"() {