2311061106/frontend/node_modules/has-proto/test/accessor.js
23175 b8b09fd9d4
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完成作业
2025-12-14 16:02:40 +08:00

35 lines
874 B
JavaScript

'use strict';
var test = require('tape');
var gPO = require('reflect.getprototypeof/polyfill')();
var gOPD = require('gopd');
var hasProto = require('../');
var hasProtoAccessor = require('../accessor');
var getter = require('dunder-proto/get');
test('hasProtoAccessor', function (t) {
var result = hasProtoAccessor();
t.equal(typeof result, 'boolean', 'returns a boolean (' + result + ')');
var obj = { __proto__: null };
if (result) {
t.notOk('toString' in obj, 'null object lacks toString');
t.equal(gPO(obj), null);
if (gOPD && getter) {
t.equal(getter(obj), null);
}
} else if (hasProto()) {
t.notOk('toString' in obj, 'null object lacks toString');
if (gOPD && getter) {
t.equal(getter(obj), null);
}
} else {
t.ok('toString' in obj, 'without proto, null object has toString');
t.equal(gPO(obj), Object.prototype);
}
t.end();
});