expect:
        dependencies(set.sourceDirectories).empty
        dependencies(set.asFileTree).empty
        dependencies(set.matching {}).empty
    }

    void setAndItsViewsHaveDependenciesOfAllSourceDirectories() {
        given:
        def task1 = Stub(Task)
        def task2 = Stub(Task)
        set.srcDir dir("dir1", task1)
        set.srcDir dir("dir2", task2)

        expect: