var ByteCounter = require('../'); var fs = require('fs'); var path = require('path'); var assert = require('assert'); var counter = new ByteCounter(); var remainingTests = 2; counter.once('progress', function() { assert.strictEqual(counter.bytes, 5); remainingTests -= 1; }); var is = fs.createReadStream(path.join(__dirname, 'test.txt')); is.pipe(counter); is.on('end', function() { remainingTests -= 1; assert.strictEqual(counter.bytes, 5); }); process.on('exit', function() { assert.strictEqual(remainingTests, 0); });