runDiffTestsWithRange(t *testing.T, s int, prollyMap testMap, tuples [][2]val.Tuple, rngTest rangeDiffTest)
testRngDeleteDiffs(t *testing.T, from Map, tups [][2]val.Tuple, numDeletes int, rngTest rangeDiffTest)
testRngInsertDiffs(t *testing.T, from Map, tups [][2]val.Tuple, numInserts int, rngTest rangeDiffTest)