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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-not-writable-targetdesc-is-writable.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-not-writable-targetdesc-is-writable.js b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-not-writable-targetdesc-is-writable.js new file mode 100644 index 0000000000..bc4537b651 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-not-writable-targetdesc-is-writable.js @@ -0,0 +1,42 @@ +// Copyright (C) 2019 Aleksey Shvayka. 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-getownproperty-p +description: > + Throws a TypeError exception if resultDesc is both non-configurable and + non-writable, while targetDesc is writable. +info: | + [[GetOwnProperty]] (P) + + ... + 17. If resultDesc.[[Configurable]] is false, then + ... + b. If resultDesc has a [[Writable]] field and resultDesc.[[Writable]] is + false, then + i. If targetDesc.[[Writable]] is true, throw a TypeError exception. + ... +features: [Proxy, proxy-missing-checks] +---*/ + +var trapCalls = 0; +var p = new Proxy({}, { + getOwnPropertyDescriptor: function(t, prop) { + Object.defineProperty(t, prop, { + configurable: false, + writable: true, + }); + + trapCalls++; + return { + configurable: false, + writable: false, + }; + }, +}); + +assert.throws(TypeError, function() { + Object.getOwnPropertyDescriptor(p, "prop"); +}); +assert.sameValue(trapCalls, 1); + +reportCompare(0, 0); |