mirror of https://github.com/tc39/test262.git
64 lines
1.5 KiB
JavaScript
64 lines
1.5 KiB
JavaScript
// Copyright (C) 2014 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 14.5
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description: >
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class default constructor 2
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---*/
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class Base1 { }
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assert.throws(TypeError, function() { Base1(); });
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class Subclass1 extends Base1 { }
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assert.throws(TypeError, function() { Subclass1(); });
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var s1 = new Subclass1();
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assert.sameValue(
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Subclass1.prototype,
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Object.getPrototypeOf(s1),
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"The value of `Subclass1.prototype` is `Object.getPrototypeOf(s1)`, after executing `var s1 = new Subclass1();`"
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);
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class Base2 {
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constructor(x, y) {
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this.x = x;
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this.y = y;
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}
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}
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class Subclass2 extends Base2 {};
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var s2 = new Subclass2(1, 2);
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assert.sameValue(
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Subclass2.prototype,
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Object.getPrototypeOf(s2),
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"The value of `Subclass2.prototype` is `Object.getPrototypeOf(s2)`, after executing `var s2 = new Subclass2(1, 2);`"
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);
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assert.sameValue(s2.x, 1, "The value of `s2.x` is `1`");
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assert.sameValue(s2.y, 2, "The value of `s2.y` is `2`");
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var f = Subclass2.bind({}, 3, 4);
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var s2prime = new f();
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assert.sameValue(
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Subclass2.prototype,
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Object.getPrototypeOf(s2prime),
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"The value of `Subclass2.prototype` is `Object.getPrototypeOf(s2prime)`"
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);
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assert.sameValue(s2prime.x, 3, "The value of `s2prime.x` is `3`");
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assert.sameValue(s2prime.y, 4, "The value of `s2prime.y` is `4`");
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var obj = {};
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class Base3 {
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constructor() {
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return obj;
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}
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}
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class Subclass3 extends Base3 {};
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var s3 = new Subclass3();
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assert.sameValue(s3, obj, "The value of `s3` is `obj`");
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