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function testRedefineGetter() {
var callGetter = function(o) {
return o.x;
};
var proto = {get foo() {}, bar: 1};
var obj = Object.create(proto);
// Add "x" getter on the prototype. Warm up the IC.
var count1 = 0;
Object.defineProperty(proto, "x", {get: function(v) {
count1++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
// Redefine "x" with a different getter. Ensure the new getter is called.
var count2 = 0;
Object.defineProperty(proto, "x", {get: function() {
count2++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
assertEq(count2, 20);
}
testRedefineGetter();
function testRedefineSetter() {
var callSetter = function(o) {
o.x = 1;
};
var proto = {get foo() {}, bar: 1};
var obj = Object.create(proto);
// Add "x" setter on the prototype. Warm up the IC.
var count1 = 0;
Object.defineProperty(proto, "x", {set: function(v) {
count1++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callSetter(obj);
}
assertEq(count1, 20);
// Redefine "x" with a different setter. Ensure the new setter is called.
var count2 = 0;
Object.defineProperty(proto, "x", {set: function() {
count2++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callSetter(obj);
}
assertEq(count1, 20);
assertEq(count2, 20);
}
testRedefineSetter();
function testDeleteAdd() {
var callGetter = function(o) {
return o.x;
};
var proto = {get foo() {}, bar: 1};
var obj = Object.create(proto);
// Add "x" getter on the prototype. Warm up the IC.
var count1 = 0;
Object.defineProperty(proto, "x", {get: function() {
count1++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
// Delete the getter.
delete proto.x;
// Add "x" back with a different getter. Ensure the new getter is called.
var count2 = 0;
Object.defineProperty(proto, "x", {get: function() {
count2++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
assertEq(count2, 20);
}
testDeleteAdd();
function testAccessorToDataAndBack() {
var callGetter = function(o) {
return o.x;
};
var proto = {get foo() {}, bar: 1};
var obj = Object.create(proto);
// Add "x" getter on the prototype. Warm up the IC.
var count1 = 0;
Object.defineProperty(proto, "x", {get: function() {
count1++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
// Turn the getter into a data property.
Object.defineProperty(proto, "x", {configurable: true, value: 123});
// Turn the data property into a (different) getter. Ensure the new getter is
// called.
var count2 = 0;
Object.defineProperty(proto, "x", {get: function() {
count2++;
}, configurable: true});
for (var i = 0; i < 20; i++) {
callGetter(obj);
}
assertEq(count1, 20);
assertEq(count2, 20);
}
testAccessorToDataAndBack();