test-zlib-write-after-flush.js

// Copyright Joyent, Inc. and other Node contributors.
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var tape = require('tape');
var zlib = require('../');
var fs = require('fs');

tape('write after flush', function(t) {
  t.plan(2);
  
  var gzip = zlib.createGzip();
  var gunz = zlib.createUnzip();

  gzip.pipe(gunz);

  var output = '';
  var input = 'A line of data\n';
  gunz.setEncoding('utf8');
  gunz.on('data', function(c) {
    output += c;
  });
  
  gunz.on('end', function() {
    t.equal(output, input);
    
    // Make sure that the flush flag was set back to normal
    t.equal(gzip._flushFlag, zlib.Z_NO_FLUSH);
  });
  
  // make sure that flush/write doesn't trigger an assert failure
  gzip.flush(); write();
  function write() {
    gzip.write(input);
    gzip.end();
    gunz.read(0);
  }
});