old_contents: var tape = require('tape');
  var zlib = require('zlib');
  var concat = require('concat-stream');
  var fs = require('fs');
  var gunzip = require('./');
  
  tape('deflated input', function(t) {
  	fs.createReadStream(__filename)
  		.pipe(zlib.createDeflate())
  		.pipe(gunzip())
  		.pipe(concat(function(data) {
  			t.same(data, fs.readFileSync(__filename));
  			t.end();
  		}))
  });
  
  tape('deflated multiple times', function(t) {
  	fs.createReadStream(__filename)
  		.pipe(zlib.createDeflate())
  		.pipe(zlib.createDeflate())
  		.pipe(gunzip())
  		.pipe(concat(function(data) {
  			t.same(data, fs.readFileSync(__filename));
  			t.end();
  		}))
  });
  
  tape('gunzipped input', function(t) {
  	fs.createReadStream(__filename)
  		.pipe(zlib.createGzip())
  		.pipe(gunzip())
  		.pipe(concat(function(data) {
  			t.same(data, fs.readFileSync(__filename));
  			t.end();
  		}))
  });
  
  tape('gunzipped multiple times', function(t) {
  	fs.createReadStream(__filename)
  		.pipe(zlib.createGzip())
  		.pipe(zlib.createGzip())
  		.pipe(gunzip())
  		.pipe(concat(function(data) {
  			t.same(data, fs.readFileSync(__filename));
  			t.end();
  		}))
  });
  
  tape('regular input', function(t) {
  	fs.createReadStream(__filename)
  		.pipe(gunzip())
  		.pipe(concat(function(data) {
  			t.same(data, fs.readFileSync(__filename));
  			t.end();
  		}))
  });
  
new_contents: var tape = require('tape');
  var zlib = require('zlib');
  var concat = require('concat-stream');
  var fs = require('fs');
  var gunzip = require('./');
  
  tape('deflated input', function(t) {
    fs.createReadStream(__filename)
      .pipe(zlib.createDeflate())
      .pipe(gunzip())
      .pipe(concat(function(data) {
        t.same(data, fs.readFileSync(__filename));
        t.end();
      }))
  });
  
  tape('deflated multiple times', function(t) {
    fs.createReadStream(__filename)
      .pipe(zlib.createDeflate())
      .pipe(zlib.createDeflate())
      .pipe(gunzip())
      .pipe(concat(function(data) {
        t.same(data, fs.readFileSync(__filename));
        t.end();
      }))
  });
  
  tape('gunzipped input', function(t) {
    fs.createReadStream(__filename)
      .pipe(zlib.createGzip())
      .pipe(gunzip())
      .pipe(concat(function(data) {
        t.same(data, fs.readFileSync(__filename));
        t.end();
      }))
  });
  
  tape('gunzipped multiple times', function(t) {
    fs.createReadStream(__filename)
      .pipe(zlib.createGzip())
      .pipe(zlib.createGzip())
      .pipe(gunzip())
      .pipe(concat(function(data) {
        t.same(data, fs.readFileSync(__filename));
        t.end();
      }))
  });
  
  tape('regular input', function(t) {
    fs.createReadStream(__filename)
      .pipe(gunzip())
      .pipe(concat(function(data) {
        t.same(data, fs.readFileSync(__filename));
        t.end();
      }))
  });
  
subject: use 2 spaces instead of tabs