ce4c83ff
 wxy
初始提交
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'use strict';
var getDescriptors = require('../');
getDescriptors.shim();
var test = require('tape');
var defineProperties = require('define-properties');
var runTests = require('./tests');
var isEnumerable = Object.prototype.propertyIsEnumerable;
var functionsHaveNames = function f() {}.name === 'f';
test('shimmed', function (t) {
t.equal(Object.getOwnPropertyDescriptors.length, 1, 'Object.getOwnPropertyDescriptors has a length of 1');
t.test('Function name', { skip: !functionsHaveNames }, function (st) {
st.equal(Object.getOwnPropertyDescriptors.name, 'getOwnPropertyDescriptors', 'Object.getOwnPropertyDescriptors has name "getOwnPropertyDescriptors"');
st.end();
});
t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
et.equal(false, isEnumerable.call(Object, 'getOwnPropertyDescriptors'), 'Object.getOwnPropertyDescriptors is not enumerable');
et.end();
});
var supportsStrictMode = (function () { return typeof this === 'undefined'; }());
t.test('bad object/this value', { skip: !supportsStrictMode }, function (st) {
st.throws(function () { return getDescriptors(undefined, 'a'); }, TypeError, 'undefined is not an object');
st.throws(function () { return getDescriptors(null, 'a'); }, TypeError, 'null is not an object');
st.end();
});
runTests(Object.getOwnPropertyDescriptors, t);
t.end();
});
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