/**
     * Returns the stream for writing to stdin.
     */
    PipedOutputStream getStdinPipe();

    /**
     * Returns the stdout output currently received from the build. This is live.
     */
    String getStandardOutput();

    /**
     * Returns the stderr output currently received from the build. This is live.
     */
    String getErrorOutput();

    /**

package org.gradle.api.internal.tasks;

import org.gradle.api.file.FileCollection;
import org.gradle.api.tasks.TaskDestroyables;
import org.gradle.internal.properties.PropertyVisitor;


/**
 * Note: this is currently not visible on {@link org.gradle.api.internal.TaskInternal} to avoid it leaking onto {@link org.gradle.api.internal.AbstractTask} and so on to the public API.
 */
public interface TaskDestroyablesInternal extends TaskDestroyables {

! exists go.mod
! exists go.sum
! stdout 'diff current/go.mod tidy/go.mod'
! stdout 'diff current/go.sum tidy/go.sum'
stderr 'go.mod file not found'

# Missing go.mod and existing go.sum should fail and not display diff.
cp go.sum.orig go.sum
! exists go.mod
exists go.sum
! go mod tidy -diff
! exists go.mod
! stdout 'diff current/go.mod tidy/go.mod'
! stdout 'diff current/go.sum tidy/go.sum'
stderr 'go.mod file not found'

        flavor: flavor 'default'
        target platform: platform 'current'
        tool chain: Tool chain 'clang' (Clang)
        shared library file: build/libs/hello/shared/libhello.dylib
    Static library 'hello:staticLibrary'
        build using task: :helloStaticLibrary
        build type: build type 'debug'
        flavor: flavor 'default'
        target platform: platform 'current'
        tool chain: Tool chain 'clang' (Clang)

/**
 * Tests that task classes compiled with the current version of Gradle are compatible with previous versions.
 */
@TargetVersions("7.0+")
class TaskSubclassingBinaryBackwardsCompatibilityCrossVersionSpec extends AbstractTaskSubclassingBinaryCompatibilityCrossVersionSpec {
    def "can use task subclass using previous Gradle version"() {
        given:
        prepareSubclassingTest(current.version)

        expect:

        double sign = Math.signum(getDifferencePercentage(baseline, current).doubleValue());
        return new BigDecimal(sign * 100.0 * confidenceInDifference(baseline.getTotalTime(), current.getTotalTime())).setScale(2, RoundingMode.HALF_UP);
    }

    public static Number getDifferencePercentage(MeasuredOperationList baseline, MeasuredOperationList current) {
        if (baseline.isEmpty() || current.isEmpty()) {

        }
        Version current;
        try {
            current = versionScheme.parseVersion(currentVersion);
        } catch (InvalidVersionSpecificationException e) {
            throw new IllegalStateException("Could not parse current Java version", e);
        }
        if (constraint.getRange() == null) {
            return constraint.getVersion().compareTo(current) <= 0;
        }

    /**
     * Current position in file
     * 
     * @return current position
     */
    long getFilePointer ();


    /**
     * Seek to new position
     * 
     * @param pos
     */
    void seek ( long pos );


    /**
     * Get the current file length
     * 
     * @return file length
     * @throws SmbException
     */
    long length () throws SmbException;


    /**

import spock.lang.Specification

class SortedMapDiffUtilTest extends Specification {

    def "diff #previous and #current"() {
        expect:
        diff(previous, current) == [removed: removed, updated: updated, added: added]

        where:
        previous             | current              | removed              | updated    | added

        'current'      | Jvm.current()                       | 'java-base'
        'differentJdk' | AvailableJavaHomes.differentVersion | 'jvm-toolchains'
        'current'      | Jvm.current()                       | 'jvm-toolchains'
    }

    def "fails on toolchain and executable mismatch (with application plugin)"() {
        def jdkCurrent = Jvm.current()