+
+ it("prefers ins/del to sub/sub", function () { with (this) {
+ // When the cost is uniform this string can be transformed by
+ // rewriting the whole thing for the same cost as deleting the
+ // front and adding to the back. But visually, we'd rather do
+ // the latter.
+ assertEqual("core", lerp("hard core", "core dump", 0.50));
+ }});
+
+ it("weights ins/del cheaper than sub", function () { with (this) {
+ // When the cost is uniform it is cheaper to rewrite the
+ // former into the latter. But we'd rather keep the "core" for
+ // visual reasons, so we need to make sure we have unequal
+ // costs.
+ assertEqual("core", lerp("apple core", "core dump", 0.51));
+ }});