forked from lix-project/lix-website
82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var test = require('tape');
|
||
|
|
var inspect = require('object-inspect');
|
||
|
|
var hasBigInts = require('has-bigints')();
|
||
|
|
var hasSymbols = require('has-symbols')();
|
||
|
|
var hasToStringTag = require('has-tostringtag/shams')();
|
||
|
|
|
||
|
|
var isBigInt = require('../');
|
||
|
|
|
||
|
|
var debug = function (v, m) { return inspect(v) + ' ' + m; };
|
||
|
|
|
||
|
|
var forEach = function (arr, func) {
|
||
|
|
var i;
|
||
|
|
for (i = 0; i < arr.length; ++i) {
|
||
|
|
func(arr[i], i, arr);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
test('non-BigInt values', function (t) {
|
||
|
|
var nonBigInts = [
|
||
|
|
true,
|
||
|
|
false,
|
||
|
|
Object(true),
|
||
|
|
Object(false),
|
||
|
|
null,
|
||
|
|
undefined,
|
||
|
|
{},
|
||
|
|
[],
|
||
|
|
/a/g,
|
||
|
|
'string',
|
||
|
|
42,
|
||
|
|
new Date(),
|
||
|
|
function () {},
|
||
|
|
NaN
|
||
|
|
];
|
||
|
|
if (hasSymbols) {
|
||
|
|
nonBigInts.push(Symbol.iterator, Symbol('foo'));
|
||
|
|
}
|
||
|
|
t.plan(nonBigInts.length);
|
||
|
|
forEach(nonBigInts, function (nonBigInt) {
|
||
|
|
t.equal(false, isBigInt(nonBigInt), debug(nonBigInt, 'is not a BigInt'));
|
||
|
|
});
|
||
|
|
t.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
test('faked BigInt values', function (t) {
|
||
|
|
t.test('real BigInt valueOf', { skip: !hasBigInts }, function (st) {
|
||
|
|
var fakeBigInt = { valueOf: function () { return BigInt(42); } };
|
||
|
|
st.equal(false, isBigInt(fakeBigInt), 'object with valueOf returning a BigInt is not a BigInt');
|
||
|
|
st.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
t.test('faked @@toStringTag', { skip: !hasBigInts || !hasToStringTag }, function (st) {
|
||
|
|
var fakeBigInt = { valueOf: function () { return BigInt(42); } };
|
||
|
|
fakeBigInt[Symbol.toStringTag] = 'BigInt';
|
||
|
|
st.equal(false, isBigInt(fakeBigInt), 'object with fake BigInt @@toStringTag and valueOf returning a BigInt is not a BigInt');
|
||
|
|
|
||
|
|
var notSoFakeBigInt = { valueOf: function () { return 42; } };
|
||
|
|
notSoFakeBigInt[Symbol.toStringTag] = 'BigInt';
|
||
|
|
st.equal(false, isBigInt(notSoFakeBigInt), 'object with fake BigInt @@toStringTag and valueOf not returning a BigInt is not a BigInt');
|
||
|
|
st.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
var fakeBigIntString = { toString: function () { return '42n'; } };
|
||
|
|
t.equal(false, isBigInt(fakeBigIntString), 'object with toString returning 42n is not a BigInt');
|
||
|
|
|
||
|
|
t.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
test('BigInt support', { skip: !hasBigInts }, function (t) {
|
||
|
|
forEach([
|
||
|
|
Function('return 42n')(), // eslint-disable-line no-new-func
|
||
|
|
BigInt(42),
|
||
|
|
Object(BigInt(42))
|
||
|
|
], function (bigInt) {
|
||
|
|
t.equal(true, isBigInt(bigInt), debug(bigInt, 'is a BigInt'));
|
||
|
|
});
|
||
|
|
|
||
|
|
t.end();
|
||
|
|
});
|