}

    void hasUsefulToString() {
        expect:
        set.displayName == '<display-name>'
        set.toString() == '<display-name>'
    }

    void viewsHaveSameDisplayNameAsSet() {
        expect:
        set.sourceDirectories.toString() == '<display-name>'
        set.asFileTree.toString() == '<display-name>'
        set.matching {}.toString() == '<display-name>'
    }