You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.9 KiB
52 lines
1.9 KiB
'use strict';
|
|
|
|
var assign = require('../');
|
|
assign.shim();
|
|
|
|
var test = require('tape');
|
|
var defineProperties = require('define-properties');
|
|
var isEnumerable = Object.prototype.propertyIsEnumerable;
|
|
var functionsHaveNames = require('functions-have-names')();
|
|
|
|
var runTests = require('./tests');
|
|
|
|
test('shimmed', function (t) {
|
|
t.equal(Object.assign.length, 2, 'Object.assign has a length of 2');
|
|
t.test('Function name', { skip: !functionsHaveNames }, function (st) {
|
|
st.equal(Object.assign.name, 'assign', 'Object.assign has name "assign"');
|
|
st.end();
|
|
});
|
|
|
|
t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
|
|
et.equal(false, isEnumerable.call(Object, 'assign'), 'Object.assign is not enumerable');
|
|
et.end();
|
|
});
|
|
|
|
var supportsStrictMode = (function () { return typeof this === 'undefined'; }());
|
|
|
|
t.test('bad object value', { skip: !supportsStrictMode }, function (st) {
|
|
st['throws'](function () { return Object.assign(undefined); }, TypeError, 'undefined is not an object');
|
|
st['throws'](function () { return Object.assign(null); }, TypeError, 'null is not an object');
|
|
st.end();
|
|
});
|
|
|
|
// v8 in node 0.8 and 0.10 have non-enumerable string properties
|
|
var stringCharsAreEnumerable = isEnumerable.call('xy', 0);
|
|
t.test('when Object.assign is present and has pending exceptions', { skip: !stringCharsAreEnumerable || !Object.preventExtensions }, function (st) {
|
|
/*
|
|
* Firefox 37 still has "pending exception" logic in its Object.assign implementation,
|
|
* which is 72% slower than our shim, and Firefox 40's native implementation.
|
|
*/
|
|
var thrower = Object.preventExtensions({ 1: '2' });
|
|
var error;
|
|
try { Object.assign(thrower, 'xy'); } catch (e) { error = e; }
|
|
st.equal(error instanceof TypeError, true, 'error is TypeError');
|
|
st.equal(thrower[1], '2', 'thrower[1] === "2"');
|
|
|
|
st.end();
|
|
});
|
|
|
|
runTests(Object.assign, t);
|
|
|
|
t.end();
|
|
});
|