when:
        run("merge")

        then:
        result.assertTasksExecuted(":createFiles", ":merge")
        file("output/merged.txt").text == 'file1,file1'

        when:
        run("merge")

        then:
        result.assertTasksNotSkipped()

        when:
        file("file-source.txt").text = "new-file1"
        run("merge")

        then:

        file("output/merged.txt").text == 'file1'

        when:
        run("merge")

        then:
        result.assertTasksNotSkipped()

        when:
        file("file-source.txt").text = "new-file1"
        run("merge")

        then:
        result.assertTasksExecuted(":createFile", ":merge")
        file("output/merged.txt").text == 'new-file1'
    }

            task merge(type: InputFilesTask) {
                inFiles.addAll(files.elements)
                outFile = file("merge.txt")
            }
        """

        when:
        run("merge")

        then:
        result.assertTasksExecuted(":produce1", ":produce2", ":merge")
        file("merge.txt").text == "one,two"
    }

        1 * action2.execute("value")
        1 * action3.execute("value")
        0 * _
    }

    def "can merge empty set into empty set"() {
        def empty = ImmutableActionSet.empty()

        expect:
        def set = empty.mergeFrom(empty)
        set.is(empty)
    }

    def "can merge empty set into singleton set"() {
        def action = Mock(Action)
        def singleton = ImmutableActionSet.of(action)

                If change was made on the `release` branch but hasn't yet been merged to `master`, merge `release` to `master`:
                <a class="btn btn-info" role="button" data-toggle="collapse" href="#merge-release-${changeId}" aria-expanded="false" aria-controls="collapseExample">Merge release to master</a>
                <div class="collapse" id="merge-release-${changeId}">
                  <div class="well">

        _ * classDoc.classExtensions >> []
        _ * classDoc.subClasses >> []

        when:
        def result = parse('<chapter/>', document)
        withCategories {
            renderer.merge(classDoc, result)
        }

        then:
        formatTree(result) == '''<chapter>
    <section>
        <title>Properties</title>
        <table>
            <title>Properties - Class</title>

        'missing'  | null       | null            | 0           | 0
    }

    def "method merge(#key, #newValue) changes map"(String key, String newValue, BiFunction<?, ?, ?> func, String expectedResult) {
        when:
        def map = getMapUnderTestToWrite()
        def result = map.merge(key, newValue, func)

        then:
        result == expectedResult
        map[key] == expectedResult

        assertDirectorySnapshot(s4, other)
        assertPartialDirectoryNode(s2, parent)
        flatten(s4) == [parent.path, "1:dir1", "2:child1", "1:dir2", "1:dir3", "1:dir4"]
    }

    def "splits and merges prefixes as directories are added"() {
        def parent = tmpDir.createDir()
        def dir1 = parent.createDir("dir1")
        def dir1dir2 = dir1.createDir("dir2")
        def dir1dir2dir3 = dir1dir2.createDir("dir3")