Actually add attempts test

test/attempts.test.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var request = require('../');
+var t = require('chai').assert;
+
+describe('Request attempts', function () {
+  it('should show 1 attempt after a successful call', function (done) {
+    request({
+      url: 'http://www.filltext.com/?rows=1', // return 1 row of data
+    }, function (err, response, body) {
+      t.strictEqual(response.statusCode, 200);
+      t.strictEqual(response.attempts, 1);
+      done();
+    });
+  });
+
+  it('should show 3 attempts after some retries', function (done) {
+    request({
+      url: 'http://www.filltext.com/?rows=1&err=500', // return a 500 status
+      maxAttempts: 3,
+      retryDelay: 100
+    }, function (err, response, body) {
+      t.strictEqual(response.statusCode, 500);
+      t.strictEqual(response.attempts, 3);
+      done();
+    });
+  });
+});