# Module Binary_searchable_intf.Indexable.For_test

    module For_test: sig .. end

To implement the test provided by `Binary_searchable`, we need to be able to construct `t` with two different values `small < big`. We also need to be able to build a `t` from an `elt array`.

    val small : Binary_searchable_intf.Indexable.elt

    val big : Binary_searchable_intf.Indexable.elt

    val of_array : Binary_searchable_intf.Indexable.elt array ->
           Binary_searchable_intf.Indexable.t