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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); });