Add unit test for 'deploy'. Fixes #34

package.json

@@ -56,8 +56,10 @@
   },
   "devDependencies": {
     "chai": "^3.3.0",
+    "fs-extra": "^0.24.0",
     "gulp-mocha": "^2.1.3",
-    "mocha": "^2.3.3"
+    "mocha": "^2.3.3",
+    "simple-git": "^1.11.0"
   },
   "engines": {
     "node": ">= 0.12"

test/testDeploy.js

@@ -0,0 +1,41 @@
+var assert = require('assert');
+var fs = require('fs');
+var fse = require('fs-extra');
+var path = require('path');
+var deploy = require('../lib/deploy');
+
+describe('Deploy', function() {
+  it('should create a gh-pages branch in the origin repo and publish files to it', function(done) {
+    fs.mkdirSync('tmp');
+
+    function finish(err) {
+      fse.removeSync('tmp');
+      done(err);
+    }
+
+    var simpleGit = require('simple-git')('tmp');
+
+    simpleGit.init(function() {
+      fs.writeFileSync('tmp/file', 'data');
+
+      return simpleGit.add('file')
+                      .commit('Initial commit')
+                      .addRemote('origin', path.join(process.cwd(), 'tmp'), function() {
+        process.chdir('tmp');
+
+        return deploy({}).then(function() {
+          process.chdir('..');
+
+          return simpleGit.checkout('gh-pages').log(function(err, log) {
+            assert.equal(log.total, 1, '1 commit');
+            assert.equal(fs.readFileSync('tmp/file', 'utf8'), 'data');
+            finish();
+          });
+        }, function() {
+          process.chdir('..');
+          assert(false, 'Deploy\'s promise should be resolved');
+        }).catch(finish);
+      });
+    });
+  });
+});