}

    def "can clean existing API changes"() {
        given:
        jsonFile << existingAcceptedApiChanges()

        when:
        jsonFileManager.emptyAcceptedApiChanges(jsonFile)

        then:
        jsonFile.text == nonExistentAcceptedApiChanges()
    }

    def "can clean non-existing API changes"() {
        given:
        jsonFile << nonExistentAcceptedApiChanges()

     * to quickly open the changes file.  By then we can also regex that path out of the description
     * in order to create a changes {@link File} for further use in this class.
     *
     * @param data the report data containing a description to parse
     * @return accepted api changes reported upon, as a file
     */

    }

    Violation acceptOrReject(JApiCompatibility member, Violation rejection) {
        List<String> changes = member.compatibilityChanges.collect { Violation.describe(it) }
        return acceptOrReject(member, changes, rejection)
    }

    Violation acceptOrReject(JApiCompatibility member, List<String> changes, Violation rejection) {
        Set<ApiChange> seenApiChanges = (Set<ApiChange>) context.userData["seenApiChanges"]

import groovy.transform.ToString

@Immutable @ToString
class AcceptedApiChange {
    String type
    String member
    String acceptation
    List<String> changes

    ApiChange toApiChange() {
        return new ApiChange(type, member, changes ?: [])
    }

        if (operatorChanged || infixChanged) {
            List<String> changes = []
            if (operatorChanged) {
                changes.add(modifierChangeDetail("operator", newIsOperator))
            }
            if (infixChanged) {
                changes.add(modifierChangeDetail("infix", newIsInfix))
            }
            return acceptOrReject(member, changes, Violation.error(member, "Breaking Kotlin modifier change"))
        }

        if (newInterfaces.isEmpty()) {
            return null
        }

        List<String> changes = filterChangesToReport(newClass, newInterfaces)
        if (changes.isEmpty()) {
            return null
        }
        return acceptOrReject(c, changes, Violation.error(c, " introduces internal or incubating interfaces"))
    }

        """)

        then:
        changes.acceptedChanges.size() == 1
        def acceptedChange = changes.acceptedChanges.entrySet().iterator().next()
        def change = acceptedChange.key
        change.type == "org.gradle.api.initialization.ConfigurableIncludedBuild"
        change.member == "Implemented interface org.gradle.api.initialization.IncludedBuild"
        change.changes == ["Interface has been removed"]

        oldMethods.removeAll(newMethods)

        if (oldMethods.isEmpty()) {
            return null
        }

        List<String> changes = filterChangesToReport(oldClass, oldMethods)
        if (changes.isEmpty()) {
            return null
        }
        return acceptOrReject(c, changes, Violation.error(c, " methods removed in internal super class"))
    }

    private Set<CtMethod> collectAllPublicApiMethods(CtClass c) {

import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity
import org.gradle.api.tasks.TaskAction
import org.gradle.work.DisableCachingByDefault

/**
 * A task used for cleaning up all accepted API changes. The functionality is called whenever the release process initiates "branching".
 */
@DisableCachingByDefault(because = "Not worth caching")
class CleanAcceptedApiChanges extends DefaultTask {

import me.champeau.gradle.japicmp.report.Violation

/**
 * Workaround for <a href="https://github.com/melix/japicmp-gradle-plugin/issues/56">japicmp issue w.r.t. superclass breakage</a>.
 *
 * <p>
 * Reports simple superclass changes (e.g. the removal of a superclass) as a breaking change, as it affects what methods can be
 * called with the given type, even if the methods and fields inherited don't change.
 * </p>
 */