Add test for downloadDump module.

test/test-connectToInstance.js

@@ -41,6 +41,7 @@ describe('connectToInstance module', function() {
 
     server = https.createServer(options, responseToRequests).listen(8889);
     cti(config, function(e) {
+      server.close();
       config.should.not.equal(undefined);
       done(e);
     });

test/test-downloadDump.js

@@ -0,0 +1,47 @@
+'use strict';
+
+var https = require('https');
+var fs = require('fs');
+var os = require('os');
+var path = require('path');
+var options = {
+  key: fs.readFileSync(path.join(__dirname, 'certs', 'key.key')),
+  cert: fs.readFileSync(path.join(__dirname, 'certs', 'cert.cert'))
+};
+var should = require('should');
+
+var dd = require('../src/downloadDump');
+
+var config = {
+  ip: 'localhost'
+};
+var server;
+
+function responseToRequests(req, res) {
+  res.end(responseString);
+}
+var responseString = 'this is the tar file for ' + Math.random().toString(36).slice(2);
+
+describe('downloadDump module', function() {
+  it('Should export the expected type', function() {
+    dd.should.be.instanceOf(Function);
+  });
+  it('Should fail when trying to write the wrong place', function(done) {
+    server = https.createServer(options, responseToRequests).listen(8889, function() {
+      config.downloadDir = '/root';
+      dd(config, function(err) {
+        err.should.not.equal(null);
+        done();
+      });
+    });
+  });
+  it('Should download the expected thing', function(done) {
+    config.downloadDir = os.tmpDir();
+
+    dd(config, function(err) {
+      server.close();
+      fs.readFileSync(path.join(config.downloadDir, 'dump.tar.gz'), 'utf8').should.equal(responseString);
+      done(err);
+    });
+  });
+});