def test_bind_tuple():
    from hidet.lang import attrs
    from hidet.lang.mapping import spatial, repeat
    from hidet.lang import printf, grid

    with hidet.script_module() as script_module:

        @hidet.script
        def launch():
            attrs.func_kind = 'public'

            for w in grid(3, attrs='p'):
                for indices in repeat(2).spatial(3).on(w, bind_tuple=True):   
                    # indices is a tuple with a single integer 
                    printf("%d %d\n", w, indices[0])

            for w in grid(3, attrs='p'):     # i is an integer
                for i in repeat(2).spatial(3).on(w):
                    printf("%d %d\n", w, i)

            for indices in grid(3, bind_tuple=True):
                printf("%d\n", indices[0])

            for indices in grid([3]):
                printf("%d\n", indices[0])

            for i in grid(3):
                printf("%d\n", i)

    cm = script_module.build()
    cm()