diff options
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/reduce/proxy.js | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/reduce/proxy.js b/js/src/tests/non262/Iterator/prototype/reduce/proxy.js new file mode 100644 index 0000000000..34569cf044 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/reduce/proxy.js @@ -0,0 +1,44 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally +// +// This test checks that %Iterator.prototype%.reduce only gets the `next` method off of the +// iterator once, and never accesses the @@iterator property. +const log = []; +const handlerProxy = new Proxy({}, { + get: (target, key, receiver) => (...args) => { + log.push(`${key}: ${args[1]?.toString()}`); + return Reflect[key](...args); + }, +}); + +class Counter extends Iterator { + value = 0; + next() { + const value = this.value; + if (value < 2) { + this.value = value + 1; + return {done: false, value}; + } + return {done: true}; + } +} + +const iter = new Proxy(new Counter(), handlerProxy); +iter.reduce((x, y) => x + y); + +assertEq( + log.join('\n'), + `get: reduce +get: next +get: value +set: value +getOwnPropertyDescriptor: value +defineProperty: value +get: value +set: value +getOwnPropertyDescriptor: value +defineProperty: value +get: value` +); + +if (typeof reportCompare === 'function') + reportCompare(0, 0); |