node/deps/v8/test/mjsunit/debug-liveedit-literals.js

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// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.

Debug = debug.Debug

function Test(old_expression, new_expression) {
    // Generate several instances of function to test that we correctly fix
    // all functions in memory.
    var function_instance_number = 11;
    eval("var t1 =1;\n" +
         "ChooseAnimalArray = [];\n" +
         "for (var i = 0; i < function_instance_number; i++) {\n" +
         "    ChooseAnimalArray.push(\n" +
         "        function ChooseAnimal() {\n" +
         "            return " + old_expression + ";\n" +
         "        });\n" +
         "}\n" +
         "var t2 =1;\n");

    for (var i = 0; i < ChooseAnimalArray.length; i++) {
        assertEquals("Cat", ChooseAnimalArray[i]());
    }

    var script = Debug.findScript(ChooseAnimalArray[0]);

    var patch_pos = script.source.indexOf(old_expression);
    var new_animal_patch = new_expression;

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

    for (var i = 0; i < ChooseAnimalArray.length; i++) {
        assertEquals("Capybara", ChooseAnimalArray[i]());
    }
}

// Check that old literal boilerplate was reset.
Test("['Cat'][0]", "['Capybara'][0]");
Test("['Cat'][0]", "{a:'Capybara'}.a");

// No literals -> 1 literal.
Test("'Cat'", "['Capybara'][0]");

// No literals -> 2 literals.
Test("'Cat'", "['Capy'][0] + {a:'bara'}.a");

// 1 literal -> no literals.
Test("['Cat'][0]", "'Capybara'");

// 2 literals -> no literals.
Test("['Ca'][0] + {a:'t'}.a", "'Capybara'");

// No literals -> regexp.
Test("'Cat'", "(/.A.Y.A.A/i).exec('Capybara')[0]");

// Array literal -> regexp.
Test("['Cat'][0]", "(/.A.Y.A.A/i).exec('Capybara')[0]");

// Regexp -> object literal.
Test("(/.A./i).exec('Cat')[0]", "{c:'Capybara'}.c");

// No literals -> regexp.
Test("'Cat'", "(/.A.Y.A.A/i).exec('Capybara')[0]");

// Regexp -> no literals.
Test("(/.A./i).exec('Cat')[0]", "'Capybara'");