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Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/set/trap-is-missing-receiver-multiple-calls.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/set/trap-is-missing-receiver-multiple-calls.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/set/trap-is-missing-receiver-multiple-calls.js b/js/src/tests/test262/built-ins/Proxy/set/trap-is-missing-receiver-multiple-calls.js new file mode 100644 index 0000000000..3144580a4b --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/set/trap-is-missing-receiver-multiple-calls.js @@ -0,0 +1,80 @@ +// Copyright (C) 2020 Alexey 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-set-p-v-receiver +description: > + If "set" trap is missing, the call is properly forwarded to ordinary + [[Set]] that invokes [[GetOwnProperty]] and [[DefineOwnProperty]] methods + on receiver (that is a Proxy itself) every time it is called. +info: | + [[Set]] ( P, V, Receiver ) + + [...] + 6. Let trap be ? GetMethod(handler, "set"). + 7. If trap is undefined, then + a. Return ? target.[[Set]](P, V, Receiver). + + OrdinarySetWithOwnDescriptor ( O, P, V, Receiver, ownDesc ) + + [...] + 3. If IsDataDescriptor(ownDesc) is true, then + [...] + c. Let existingDescriptor be ? Receiver.[[GetOwnProperty]](P). + d. If existingDescriptor is not undefined, then + [...] + iii. Let valueDesc be the PropertyDescriptor { [[Value]]: V }. + iv. Return ? Receiver.[[DefineOwnProperty]](P, valueDesc). + e. Else, + i. Assert: Receiver does not currently have a property P. + ii. Return ? CreateDataProperty(Receiver, P, V). + [...] + + [[DefineOwnProperty]] ( P, Desc ) + + [...] + 9. Let booleanTrapResult be ! ToBoolean(? Call(trap, handler, « target, P, descObj »)). + [...] + 17. Return true. +features: [Proxy, Reflect] +includes: [compareArray.js] +---*/ + +var getOwnPropertyKeys = []; +var definePropertyKeys = []; + +var p = new Proxy({ + foo: 1, +}, { + getOwnPropertyDescriptor: function(target, key) { + getOwnPropertyKeys.push(key); + return Reflect.getOwnPropertyDescriptor(target, key); + }, + defineProperty: function(target, key, desc) { + definePropertyKeys.push(key); + return Reflect.defineProperty(target, key, desc); + }, +}); + +p["foo"] = 2; +p.foo = 2; +p.foo = 2; + +assert.compareArray(getOwnPropertyKeys, ["foo", "foo", "foo"], + "getOwnPropertyDescriptor: key present on [[ProxyTarget]]"); +assert.compareArray(definePropertyKeys, ["foo", "foo", "foo"], + "defineProperty: key present on [[ProxyTarget]]"); + +getOwnPropertyKeys = []; +definePropertyKeys = []; + +p.bar = 3; +p["bar"] = 3; +p.bar = 3; + +assert.compareArray(getOwnPropertyKeys, ["bar", "bar", "bar"], + "getOwnPropertyDescriptor: key absent on [[ProxyTarget]]"); +assert.compareArray(definePropertyKeys, ["bar", "bar", "bar"], + "defineProperty: key absent on [[ProxyTarget]]"); + +reportCompare(0, 0); |