// Generate external jar with entries in alphabetical order
        def externalJar = file('build/libs/external.jar')
        succeeds(":a:javadoc", "-Dreverse=false")
        new ZipTestFixture(externalJar).hasDescendantsInOrder('META-INF/MANIFEST.MF', 'a', 'b', 'c', 'd')

        when:
        // Re-generate external jar with entries in reverse alphabetical order
        succeeds(":a:javadoc", "-Dreverse=true")
        then:

                dirPermissions {}
            }
        """

        when:
        succeeds taskName

        then:
        archive(file("build/test.${fileExtension}")).hasDescendantsInOrder(
            'file13.txt',
            'file11.txt',
            'dir2/file21.txt',
            'dir2/file22.txt',
            'dir2/file23.txt',
            'dir2/file24.txt',

        }
        for (String fileName : relativePaths) {
            assertEquals(expectedCounts.get(fileName).size(), filesByRelativePath.get(fileName).size())
        }
        this
    }

    def hasDescendantsInOrder(String... relativePaths) {
        def expectedOrder = CollectionUtils.toList(relativePaths)
        def actualOrder = CollectionUtils.toList(filesByRelativePath.keySet())
        assertEquals(actualOrder, expectedOrder)