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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
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-rw-r--r--node_modules/object.assign/test/shimmed.js52
1 files changed, 52 insertions, 0 deletions
diff --git a/node_modules/object.assign/test/shimmed.js b/node_modules/object.assign/test/shimmed.js
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+'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();
+});