v8/test/debugger/debug/debug-liveedit-1.js

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Debug = debug.Debug

eval("var something1 = 25; "
     + " function ChooseAnimal() { return          'Cat';          } "
     + " ChooseAnimal.Helper = function() { return 'Help!'; }");

assertEquals("Cat", ChooseAnimal());

var script = Debug.findScript(ChooseAnimal);

var orig_animal = "Cat";
var patch_pos = script.source.indexOf(orig_animal);
var new_animal_patch = "Cap' + 'y' + 'bara";

var change_log = new Array();
Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos, orig_animal.length, new_animal_patch, change_log);

assertEquals("Capybara", ChooseAnimal());