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'use strict';
require('../common');
const assert = require('assert');
const buf = Buffer.allocUnsafe(8);
['LE', 'BE'].forEach(function(endianness) {
// Should allow simple BigInts to be written and read
let val = 123456789n;
buf['writeBigInt64' + endianness](val, 0);
let rtn = buf['readBigInt64' + endianness](0);
assert.strictEqual(val, rtn);
// Should allow INT64_MAX to be written and read
val = 0x7fffffffffffffffn;
buf['writeBigInt64' + endianness](val, 0);
rtn = buf['readBigInt64' + endianness](0);
assert.strictEqual(val, rtn);
// Should read and write a negative signed 64-bit integer
val = -123456789n;
buf['writeBigInt64' + endianness](val, 0);
assert.strictEqual(val, buf['readBigInt64' + endianness](0));
// Should read and write an unsigned 64-bit integer
val = 123456789n;
buf['writeBigUInt64' + endianness](val, 0);
assert.strictEqual(val, buf['readBigUInt64' + endianness](0));
// Should throw a RangeError upon INT64_MAX+1 being written
assert.throws(function() {
const val = 0x8000000000000000n;
buf['writeBigInt64' + endianness](val, 0);
}, RangeError);
// Should throw a RangeError upon UINT64_MAX+1 being written
assert.throws(function() {
const val = 0x10000000000000000n;
buf['writeBigUInt64' + endianness](val, 0);
}, {
code: 'ERR_OUT_OF_RANGE',
message: 'The value of "value" is out of range. It must be ' +
'>= 0n and < 2n ** 64n. Received 18_446_744_073_709_551_616n'
});
// Should throw a TypeError upon invalid input
assert.throws(function() {
buf['writeBigInt64' + endianness]('bad', 0);
}, TypeError);
// Should throw a TypeError upon invalid input
assert.throws(function() {
buf['writeBigUInt64' + endianness]('bad', 0);
}, TypeError);
});