* limitations under the License.
 */

package org.gradle.internal.execution.history.changes;

public class LimitingChangeVisitor implements ChangeVisitor {
    private final int maxReportedChanges;
    private final ChangeVisitor delegate;
    private int visited;

    public LimitingChangeVisitor(int maxReportedChanges, ChangeVisitor delegate) {
        this.maxReportedChanges = maxReportedChanges;

import spock.lang.Specification

class LimitingChangeVisitorTest extends Specification {

    def collectingVisitor = new CollectingChangeVisitor()
    def visitor = new LimitingChangeVisitor(2, collectingVisitor)

    def "will not accept more changes than specified"() {
        def change1 = Mock(Change)
        def change2 = Mock(Change)

        expect:
        visitor.visitChange(change1)

        }
        0 * _

        and:
        reported == [change3, change2, change1]
    }

    def "does not cache if visitor aborts visiting"() {
        when:
        cachingChanges.accept(new LimitingChangeVisitor(2, new CollectingChangeVisitor()))

        then:
        interaction {
            receivesChanges(change1, change2)
        }
        0 * _

        when: