node/test/simple/test-fs-read-stream-err.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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var common = require('../common');
var assert = require('assert');
var fs = require('fs');

var stream = fs.createReadStream(__filename, { bufferSize: 64 });
var err = new Error('BAM');

stream.on('data', function(buf) {
  var fd = stream.fd;

  fs.read = function() {
    var cb = arguments[arguments.length - 1];
    process.nextTick(function() {
      cb(err);
    });
  };

  fs.close = common.mustCall(function(fd_, cb) {
    assert.equal(fd_, fd);
    process.nextTick(cb);
  });

  stream.on('error', common.mustCall(function(err_) {
    assert.equal(stream.fd, null);
    assert.equal(err_, err);
  }));

  stream.on('data', assert.fail);  // no more 'data' events should follow
});