nodejs/test/parallel/test-net-write-arguments.js

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'use strict';
const common = require('../common');
const net = require('net');
const socket = net.Stream({ highWaterMark: 0 });
// Make sure that anything besides a buffer or a string throws.
socket.write(null, common.expectsError({
code: 'ERR_STREAM_NULL_VALUES',
name: 'TypeError',
message: 'May not write null values to stream'
}));
socket.on('error', common.expectsError({
code: 'ERR_STREAM_NULL_VALUES',
name: 'TypeError',
message: 'May not write null values to stream'
}));
[
true,
false,
undefined,
1,
1.0,
+Infinity,
-Infinity,
[],
{}
].forEach((value) => {
// We need to check the callback since 'error' will only
// be emitted once per instance.
socket.write(value, common.expectsError({
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "chunk" argument must be of type string or an instance of ' +
`Buffer or Uint8Array.${common.invalidArgTypeHelper(value)}`
}));
});