Constnium/node_modules/has-bigints/test/index.js
2022-06-23 02:27:43 +02:00

44 lines
1,002 B
JavaScript

'use strict';
var test = require('tape');
var hasBigInts = require('..');
test('interface', function (t) {
t.equal(typeof hasBigInts, 'function', 'is a function');
t.equal(typeof hasBigInts(), 'boolean', 'returns a boolean');
t.end();
});
test('BigInts are supported', { skip: !hasBigInts() }, function (t) {
t.equal(typeof BigInt, 'function', 'global BigInt is a function');
if (typeof BigInt !== 'function') {
return;
}
t.equal(BigInt(42), BigInt(42), '42n === 42n');
t['throws'](
function () { BigInt(NaN); },
RangeError,
'NaN is not an integer; BigInt(NaN) throws'
);
t['throws'](
function () { BigInt(Infinity); },
RangeError,
'Infinity is not an integer; BigInt(Infinity) throws'
);
t['throws'](
function () { BigInt(1.1); },
RangeError,
'1.1 is not an integer; BigInt(1.1) throws'
);
t.end();
});
test('BigInts are not supported', { skip: hasBigInts() }, function (t) {
t.equal(typeof BigInt, 'undefined', 'global BigInt is undefined');
t.end();
});