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