}

    /**
     * Configures the task to sign each of the given files
     */
    public void sign(File... files) {
        addSignatures(null, files);
    }

    /**
     * Configures the task to sign each of the given artifacts, using the given classifier as the classifier for the resultant signature publish artifact.
     */
    public void sign(String classifier, File... files) {

                <tr>
                    <td>Name</td>
                </tr>
            </thead>
            <tr>
                <td>signatory</td>
            </tr>
            <tr>
                <td>sign</td>
            </tr>
        </table>
    </section>

                }
            }
            def sign = project.getProperty("sign")
            if (sign == 'skip') {
                tasks.withType(Sign)*.onlyIf { false }
            } else {
                tasks.withType(Sign)*.enabled = Boolean.parseBoolean(sign)
            }

        """

        when:
        succeeds "publishIvyPublicationToIvyRepository", "-Psign=true"
        then:

        return "sign" + capitalize(publication.getName()) + "Publication";
    }

    private Sign createSignTaskFor(CharSequence name, Action<Sign> taskConfiguration) {
        final String signTaskName = "sign" + capitalize(name);
        if (project.getTasks().getNames().contains(signTaskName)) {
            return project.getTasks().named(signTaskName, Sign.class).get();
        }

        then:
        executedAndNotSkipped ":signArchives", ":signMeta"

        and:
        file("build", "libs", "sign-1.0.jar.asc").text
        file("build", "libs", "sign-1.0-javadoc.jar.asc").text
        file("build", "libs", "sign-1.0-sources.jar.asc").text
    }

    def "configurations are signed when executing assemble task"() {
        given:
        buildFile << """
            configurations {
                meta

// implied by expression z, or if sign < 0, by expression !z.
func minVersion(z Expr, sign int) int {
	switch z := z.(type) {
	default:
		return -1
	case *AndExpr:
		op := andVersion
		if sign < 0 {
			op = orVersion
		}
		return op(minVersion(z.X, sign), minVersion(z.Y, sign))
	case *OrExpr:
		op := orVersion
		if sign < 0 {
			op = andVersion
		}

            ${keyInfo.addAsPropertiesScript()}

            signing {
                sign {
                    sign(tasks.jar)
                }
            }
        """

        when:
        run "sign"

        then:
        executedAndNotSkipped ":signJar"

        and:
        file("build", "libs", "sign-1.0.jar.asc").text
    }

    def "use kotlin action when signing"() {
        given:

                sign jar, javadocJar, sourcesJar
            }
        """

        when:
        run "signJar", "signJavadocJar", "signSourcesJar"

        then:
        executedAndNotSkipped(":signJar", ":signJavadocJar", ":signSourcesJar")

        and:
        file("build", "libs", "sign-1.0.jar.asc").text
        file("build", "libs", "sign-1.0-javadoc.jar.asc").text

    def setup() {
        applyPlugin()
    }

    def "sign jar with defaults"() {
        given:
        useJavadocAndSourceJars()
        createJarTaskOutputFile('jar', 'sourcesJar', 'javadocJar')

        when:
        signing {
            sign jar
            sign sourcesJar, javadocJar
        }

        then:

    }
    
    def "sign single file with defaults"() {
        when:
        def operation = signing.sign(input1)
        
        then:
        output1.exists()
        output1 == operation.singleSignature.file
    }
    
    def "sign single artifact with defaults"() {
        when:
        def operation = signing.sign(input1Artifact)
        
        then:
        output1.exists()