LayoutTests/js/script-tests/class-syntax-default-constructor.js

description('Tests for ES6 class syntax default constructor');

function shouldThrow(s, message) {
    var threw = false;
    try {
        eval(s);
    } catch(e) {
        threw = true;
        if (!message || e.toString() === eval(message))
            testPassed(s + ":::" + e.toString());
        else
            testFailed(s);
    }
    if (!threw)
        testFailed(s);
}

function shouldBe(a, b) {
    var r1 = eval(a);
    var r2 = eval(b)
    if (r1 === r2)
        testPassed(a + ":::" + b);
    else
        testFailed(r1 + ":::" + r2);
}

function shouldBeTrue(s) {
    if (eval(s) === true)
        testPassed(s);
    else
        testFailed(s);
}

function assert(b) {
    if (!b)
        testFailed("Failed assert");
    else
        testPassed("Passed assert");
}

class A { };
class B extends A { };

shouldBeTrue('new A instanceof A');
shouldThrow('A()', '"TypeError: Cannot call a class constructor"');
shouldBeTrue('A.prototype.constructor instanceof Function');
shouldBe('A.prototype.constructor.name', '"A"');
shouldBeTrue('new B instanceof A; new B instanceof A');
shouldThrow('B()', '"TypeError: Cannot call a class constructor"');
shouldBe('B.prototype.constructor.name', '"B"');
shouldBeTrue('A !== B');
shouldBeTrue('A.prototype.constructor !== B.prototype.constructor');
var result = new (class extends (class { constructor(a, b) { return [a, b]; } }) {})(1, 2);
assert(result[0] === 1);
assert(result[1] === 2);


var successfullyParsed = true;