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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-setprototypeof-v
description: >
Return true if ToBoolean(trap result) is true, and target.[[IsExtensible]] is
true
info: |
[[SetPrototypeOf]] (V)
8. Let booleanTrapResult be ToBoolean(? Call(trap, handler, « target, V »)).
9. If booleanTrapResult is false, return false.
10. Let extensibleTarget be ? IsExtensible(target).
11. If extensibleTarget is true, return true.
features: [Reflect.setPrototypeOf, Symbol]
---*/
var called;
var target = new Proxy({}, {
isExtensible: function() {
called += 1;
return true;
},
getPrototypeOf: function() {
throw new Test262Error("target.[[GetPrototypeOf]] is not called");
}
});
var p = new Proxy(target, {
setPrototypeOf: function(t, v) {
return v.attr;
}
});
var result;
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: true
});
assert.sameValue(result, true, "true");
assert.sameValue(called, 1, "true - isExtensible is called");
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: "false"
});
assert.sameValue(result, true, "string");
assert.sameValue(called, 1, "string - isExtensible is called");
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: 42
});
assert.sameValue(result, true, "42");
assert.sameValue(called, 1, "number - isExtensible is called");
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: p
});
assert.sameValue(result, true, "p");
assert.sameValue(called, 1, "object - isExtensible is called");
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: []
});
assert.sameValue(result, true, "[]");
assert.sameValue(called, 1, "[] - isExtensible is called");
called = 0;
result = Reflect.setPrototypeOf(p, {
attr: Symbol(1)
});
assert.sameValue(result, true, "symbol");
assert.sameValue(called, 1, "symbol - isExtensible is called");
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