29 lines
799 B
JavaScript
Executable File
29 lines
799 B
JavaScript
Executable File
'use strict';
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require('es5-shim');
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var numberIsNaN = require('../');
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numberIsNaN.shim();
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var test = require('tape');
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var defineProperties = require('define-properties');
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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var functionsHaveNames = function f() {}.name === 'f';
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test('shimmed', function (t) {
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t.equal(Number.isNaN.length, 1, 'Number.isNaN has a length of 1');
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(Number.isNaN.name, 'isNaN', 'Number.isNaN has name "isNaN"');
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st.end();
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});
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t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
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et.equal(false, isEnumerable.call(Number, 'isNaN'), 'Number.isNaN is not enumerable');
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et.end();
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});
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require('./tests')(Number.isNaN, t);
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t.end();
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});
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