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19 lines
477 B
19 lines
477 B
'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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