d2-ui/node_modules-react-15/is-regex/test.js

d2-ui

'use strict';

var test = require('tape');
var isRegex = require('./');
var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';

test('not regexes', function (t) {
	t.notOk(isRegex(), 'undefined is not regex');
	t.notOk(isRegex(null), 'null is not regex');
	t.notOk(isRegex(false), 'false is not regex');
	t.notOk(isRegex(true), 'true is not regex');
	t.notOk(isRegex(42), 'number is not regex');
	t.notOk(isRegex('foo'), 'string is not regex');
	t.notOk(isRegex([]), 'array is not regex');
	t.notOk(isRegex({}), 'object is not regex');
	t.notOk(isRegex(function () {}), 'function is not regex');
	t.end();
});

test('@@toStringTag', { skip: !hasToStringTag }, function (t) {
	var regex = /a/g;
	var fakeRegex = { valueOf: function () { return regex; }, toString: function () { return String(regex); } };
	fakeRegex[Symbol.toStringTag] = function () { return 'RegExp'; };
	t.notOk(isRegex(fakeRegex), 'fake RegExp with @@toStringTag "RegExp" is not regex');
	t.end();
});

test('regexes', function (t) {
	t.ok(isRegex(/a/g), 'regex literal is regex');
	t.ok(isRegex(new RegExp('a', 'g')), 'regex object is regex');
	t.end();
});