47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
'use strict';
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var test = require('tape');
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var defineProperties = require('define-properties');
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var callBind = require('call-bind');
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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var functionsHaveNames = require('functions-have-names')();
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var functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();
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var hasStrictMode = require('has-strict-mode')();
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var runTests = require('./tests');
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test('builtin', function (t) {
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var descriptor = Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags');
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t.equal(descriptor.get.length, 0, 'RegExp#flags getter has a length of 0');
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(descriptor.get.name, functionsHaveConfigurableNames ? 'get flags' : 'flags', 'RegExp#flags getter has name "get flags" (or "flags" if function names are not configurable)');
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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(RegExp.prototype, 'flags'), 'RegExp#flags is not enumerable');
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et.end();
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});
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t.test('bad array/this value', { skip: !hasStrictMode }, function (st) {
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st['throws'](function () { return descriptor.get.call(undefined); }, TypeError, 'undefined is not an object');
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st['throws'](function () { return descriptor.get.call(null); }, TypeError, 'null is not an object');
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st.end();
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});
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t.test('has the correct descriptor', function (st) {
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st.equal(descriptor.configurable, true);
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st.equal(descriptor.enumerable, false);
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st.equal(typeof descriptor.get, 'function');
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st.equal(descriptor.set, undefined);
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st.end();
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});
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runTests(callBind(descriptor.get), t);
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t.end();
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});
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