38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
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'use strict';
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var padStart = require('../');
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padStart.shim();
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var test = require('tape');
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var defineProperties = require('define-properties');
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var bind = require('function-bind');
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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var functionsHaveNames = function f() {}.name === 'f';
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var runTests = require('./tests');
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test('shimmed', function (t) {
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t.equal(String.prototype.padStart.length, 1, 'String#padStart has a length of 1');
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(String.prototype.padStart.name, 'padStart', 'String#padStart has name "padStart"');
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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(String.prototype, 'padStart'), 'String#padStart is not enumerable');
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et.end();
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});
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var supportsStrictMode = (function () { return typeof this === 'undefined'; }());
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t.test('bad string/this value', { skip: !supportsStrictMode }, function (st) {
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st.throws(function () { return padStart(undefined, 'a'); }, TypeError, 'undefined is not an object');
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st.throws(function () { return padStart(null, 'a'); }, TypeError, 'null is not an object');
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st.end();
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});
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runTests(bind.call(Function.call, String.prototype.padStart), t);
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t.end();
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});
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