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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 false if ToBoolean(trap result) is false, without checking
target.[[IsExtensible]]
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: [Proxy, Reflect, Reflect.setPrototypeOf]
---*/
var called = 0;
var target = new Proxy({}, {
isExtensible: function() {
called += 1;
}
});
var p = new Proxy(target, {
setPrototypeOf: function(t, v) {
return v.attr;
}
});
var result;
result = Reflect.setPrototypeOf(p, {
attr: false
});
assert.sameValue(result, false, "false");
assert.sameValue(called, 0, "false - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: ""
});
assert.sameValue(result, false, "the empty string");
assert.sameValue(called, 0, "the empty string - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: 0
});
assert.sameValue(result, false, "0");
assert.sameValue(called, 0, "0 - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: -0
});
assert.sameValue(result, false, "-0");
assert.sameValue(called, 0, "-0 - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: null
});
assert.sameValue(result, false, "null");
assert.sameValue(called, 0, "null - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: undefined
});
assert.sameValue(result, false, "undefined");
assert.sameValue(called, 0, "undefined - isExtensible is not called");
result = Reflect.setPrototypeOf(p, {
attr: NaN
});
assert.sameValue(result, false, "NaN");
assert.sameValue(called, 0, "NaN - isExtensible is not called");
reportCompare(0, 0);
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