diff options
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js new file mode 100644 index 0000000000..84fa1c2d77 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js @@ -0,0 +1,47 @@ +// Copyright (C) 2015 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 target.[[SetPrototypeOf]] (V) if trap is undefined or null. +info: | + [[SetPrototypeOf]] (V) + + 6. Let trap be ? GetMethod(handler, "setPrototypeOf"). + 7. If trap is undefined, then + a. Return ? target.[[SetPrototypeOf]](V). + + GetMethod (V, P) + + 2. Let func be ? GetV(V, P). + 3. If func is either undefined or null, return undefined. +features: [Proxy] +---*/ + +var proxy, called, value; +var target = new Proxy({}, { + setPrototypeOf: function(t, v) { + called += 1; + value = v; + return true; + } +}); +var proto = {}; + +proxy = new Proxy(target, {}); +called = 0; +value = false; +Object.setPrototypeOf(proxy, proto); +assert.sameValue(called, 1, "undefined, target.[[SetPrototypeOf]] is called"); +assert.sameValue(value, proto, "undefined, called with V"); + +proxy = new Proxy(target, { + setPrototypeOf: null +}); +called = 0; +value = false; +Object.setPrototypeOf(proxy, proto); +assert.sameValue(called, 1, "null, target.[[SetPrototypeOf]] is called"); +assert.sameValue(value, proto, "null, called with V"); + +reportCompare(0, 0); |