shape-snapshots.js

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function test1() {

    var o = {x: 1, y: 2};

    var snapshot = createShapeSnapshot(o);

    checkShapeSnapshot(snapshot);

    Object.defineProperty(o, "z", {get: function() {}});

    checkShapeSnapshot(snapshot);

    snapshot = createShapeSnapshot(o);

    checkShapeSnapshot(snapshot);

    o[12345678] = 1;

    checkShapeSnapshot(snapshot);

    snapshot = createShapeSnapshot(o);

    Object.defineProperty(o, "a", {configurable: true, set: function(){}});

    checkShapeSnapshot(snapshot);

    snapshot = createShapeSnapshot(o);

    checkShapeSnapshot(snapshot);

    delete o.a;

    checkShapeSnapshot(snapshot);

test1();

function test2() {

    var dictObject = {x: 1, y: 2, z: 3};

    delete dictObject.x;

    var objects = [this, {}, {x: 1}, {x: 2}, dictObject, function() {}, [1, 2],

                   Object.prototype, new Proxy({}, {})];

    var snapshots = objects.map(o => createShapeSnapshot(o));

    gc();

    snapshots.forEach(function(snapshot) {

        objects.forEach(function(obj) {

            checkShapeSnapshot(snapshot, obj);

});

});

test2();