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"use strict";
add_task(function test_shallowclone() {
// Check that shallow cloning an object with regular properties,
// results into a new object with all properties from the source object.
const fullyCloneableObject = {
numProp: 123,
strProp: "str",
boolProp: true,
arrayProp: [{ item1: "1", item2: "2" }],
fnProp() {
return "fn result";
},
promise: Promise.resolve("promised-value"),
weakmap: new WeakMap(),
proxy: new Proxy({}, {}),
};
let clonedObject = ChromeUtils.shallowClone(fullyCloneableObject);
Assert.deepEqual(
clonedObject,
fullyCloneableObject,
"Got the expected cloned object for an object with regular properties"
);
// Check that shallow cloning an object with getters and setters properties,
// results into a new object without all the properties from the source object excluded
// its getters and setters.
const objectWithGetterAndSetter = {
get myGetter() {
return "getter result";
},
set mySetter(v) {},
myFunction() {
return "myFunction result";
},
};
clonedObject = ChromeUtils.shallowClone(objectWithGetterAndSetter);
Assert.deepEqual(
clonedObject,
{
myFunction: objectWithGetterAndSetter.myFunction,
},
"Got the expected cloned object for an object with getters and setters"
);
// Check that shallow cloning a proxy object raises the expected exception..
const proxyObject = new Proxy(fullyCloneableObject, {});
Assert.throws(
() => {
ChromeUtils.shallowClone(proxyObject);
},
/Shallow cloning a proxy object is not allowed/,
"Got the expected error on ChromeUtils.shallowClone called on a proxy object"
);
});
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