59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
'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 = {
|
|
toString: function () { return String(regex); },
|
|
valueOf: function () { return regex; }
|
|
};
|
|
fakeRegex[Symbol.toStringTag] = '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();
|
|
});
|
|
|
|
test('does not mutate regexes', function (t) {
|
|
t.test('lastIndex is a marker object', function (st) {
|
|
var regex = /a/;
|
|
var marker = {};
|
|
regex.lastIndex = marker;
|
|
st.equal(regex.lastIndex, marker, 'lastIndex is the marker object');
|
|
st.ok(isRegex(regex), 'is regex');
|
|
st.equal(regex.lastIndex, marker, 'lastIndex is the marker object after isRegex');
|
|
st.end();
|
|
});
|
|
|
|
t.test('lastIndex is nonzero', function (st) {
|
|
var regex = /a/;
|
|
regex.lastIndex = 3;
|
|
st.equal(regex.lastIndex, 3, 'lastIndex is 3');
|
|
st.ok(isRegex(regex), 'is regex');
|
|
st.equal(regex.lastIndex, 3, 'lastIndex is 3 after isRegex');
|
|
st.end();
|
|
});
|
|
|
|
t.end();
|
|
});
|