58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
load("test-common.js");
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try {
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let p = new Proxy(function() { this.x = 5; }, { construct: null });
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assert((new p).x === 5);
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let p = new Proxy(function() { this.x = 5; }, { construct: undefined });
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assert((new p).x === 5);
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let p = new Proxy(function() { this.x = 5; }, {});
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assert((new p).x === 5);
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function f(value) {
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this.x = value;
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}
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let p;
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const handler = {
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construct(target, arguments, newTarget) {
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assert(target === f);
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assert(newTarget === p);
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if (arguments[1])
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return Reflect.construct(target, [arguments[0] * 2], newTarget);
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return Reflect.construct(target, arguments, newTarget);
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},
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};
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p = new Proxy(f, handler);
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assert(new p(15).x === 15);
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assert(new p(15, true).x === 30);
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let p;
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function theNewTarget() {};
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const handler = {
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construct(target, arguments, newTarget) {
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assert(target === f);
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assert(newTarget === theNewTarget);
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if (arguments[1])
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return Reflect.construct(target, [arguments[0] * 2], newTarget);
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return Reflect.construct(target, arguments, newTarget);
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},
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};
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p = new Proxy(f, handler);
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Reflect.construct(p, [15], theNewTarget);
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// Invariants
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[{}, [], new Proxy({}, {})].forEach(item => {
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assertThrowsError(() => {
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new (new Proxy(item, {}));
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}, {
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error: TypeError,
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message: "[object ProxyObject] is not a constructor",
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});
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});
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console.log("PASS");
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} catch (e) {
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console.log("FAIL: " + e);
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}
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