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musix-oss/node_modules/es-abstract/test/helpers/getSymbolDescription.js

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2020-03-03 20:30:50 +00:00
'use strict';
var test = require('tape');
var debug = require('object-inspect');
var forEach = require('foreach');
var v = require('./values');
var getSymbolDescription = require('../../helpers/getSymbolDescription');
var getInferredName = require('../../helpers/getInferredName');
test('getSymbolDescription', function (t) {
t.test('no symbols', { skip: v.hasSymbols }, function (st) {
st['throws'](
getSymbolDescription,
SyntaxError,
'requires Symbol support'
);
st.end();
});
forEach(v.nonSymbolPrimitives.concat(v.objects), function (nonSymbol) {
t['throws'](
function () { getSymbolDescription(nonSymbol); },
v.hasSymbols ? TypeError : SyntaxError,
debug(nonSymbol) + ' is not a Symbol'
);
});
t.test('with symbols', { skip: !v.hasSymbols }, function (st) {
forEach(
[
[Symbol(), undefined],
[Symbol(undefined), undefined],
[Symbol(null), 'null'],
[Symbol.iterator, 'Symbol.iterator'],
[Symbol('foo'), 'foo']
],
function (pair) {
var sym = pair[0];
var desc = pair[1];
st.equal(getSymbolDescription(sym), desc, debug(sym) + ' yields ' + debug(desc));
}
);
st.test('only possible when inference is supported', { skip: !getInferredName }, function (s2t) {
s2t.equal(getSymbolDescription(Symbol('')), '', 'Symbol("") description is empty string');
s2t.end();
});
st.end();
});
t.end();
});