mirror of https://github.com/jkjoy/sunpeiwen.git
20 lines
496 B
JavaScript
20 lines
496 B
JavaScript
'use strict';
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var test = require('tape');
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var hasProto = require('../');
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test('hasProto', function (t) {
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var result = hasProto();
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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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} else {
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t.ok('toString' in obj, 'without proto, null object has toString');
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t.equal(obj.__proto__, null); // eslint-disable-line no-proto
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}
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t.end();
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});
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