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load(libdir + "array-compare.js");
const xs = [
// Zero arguments.
[],
// Single argument.
[1],
// Few arguments. Even number of arguments.
[1, 2],
// Few arguments. Odd number of arguments.
[1, 2, 3],
// Many arguments. Even number of arguments.
[1, 2, 3, 4, 5, 6, 7, 8, 9, 0],
// Many arguments. Odd number of arguments.
[1, 2, 3, 4, 5, 6, 7, 8, 9],
];
class ArrayWithExplicitConstructor extends Array {
constructor(...args) {
super(...args);
}
}
class ArrayWithImplicitConstructor extends Array {
constructor(...args) {
super(...args);
}
}
function f(...x) {
return new ArrayWithExplicitConstructor(...x);
}
function g(...x) {
return new ArrayWithImplicitConstructor(...x);
}
// Don't inline |f| and |g| into the top-level script.
with ({}) ;
for (let i = 0; i < 400; ++i) {
let x = xs[i % xs.length];
// NB: Array(1) creates the array `[,]`.
let expected = x.length !== 1 ? x : [,];
let result = f.apply(null, x);
assertEq(arraysEqual(result, expected), true);
assertEq(Object.getPrototypeOf(result), ArrayWithExplicitConstructor.prototype);
}
for (let i = 0; i < 400; ++i) {
let x = xs[i % xs.length];
// NB: Array(1) creates the array `[,]`.
let expected = x.length !== 1 ? x : [,];
let result = g.apply(null, x);
assertEq(arraysEqual(result, expected), true);
assertEq(Object.getPrototypeOf(result), ArrayWithImplicitConstructor.prototype);
}
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