Add tests to init command

lib/__mocks__/defaults.js

@@ -0,0 +1,7 @@
+module.exports = {
+    DEFAULT_SUBDIR: 'src',
+    STORAGE_FILE: '/tmp/.gapps-test',
+    CONFIG_NAME: 'gapps-test.config.json',
+    WEBSERVER_PORT: 2386,
+    DOWNLOAD_URL: 'https://script.google.com/feeds/download/export?format=json&id='
+};

lib/commands/auth.js

@@ -12,7 +12,14 @@ const GOOGLE_AUTH_SCOPE = [
   'https://www.googleapis.com/auth/drive.scripts'
 ];
 
-module.exports = function auth(clientSecretPath, withWebserver) {
+/**
+ * Tries to find the storage file. If found, tells the users to remove it, otherwiser runs the
+ * authentication flow using the provided path the to the clientSecret path
+ * @param {String} clientSecretPath
+ * @param {Boolean} withWebServer
+ * @returns {Promise}
+ */
+module.exports = function auth(clientSecretPath, withWebServer = true) {
   return fs
     .lstatAsync(defaults.STORAGE_FILE)
     .then(() => {
@@ -27,20 +34,29 @@ module.exports = function auth(clientSecretPath, withWebserver) {
         throw defaults.STORAGE_FILE +
           ' does not exist yet. Specify a credential file with `--auth ~/Downloads/client_secret_abcd.json`';
       }
-      return performAuthenticationFlow(clientSecretPath, withWebserver);
+      return performAuthenticationFlow(clientSecretPath, withWebServer);
     });
 };
 
-function performAuthenticationFlow(clientSecretPath, withWebserver) {
+/**
+ * Performs the authentication flow by reading the .json file
+ * and using it's content to authenticate with Google. When
+ * done, clean ups the stdin.
+ * @param {String} clientSecretPath
+ * @param {Boolean} withWebServer
+ * @return {Promise}
+ */
+function performAuthenticationFlow(clientSecretPath, withWebServer) {
   return getCredentialsFromFile(clientSecretPath)
-    .then(credentials => authenticateWithGoogle(credentials, withWebserver))
+    .then(credentials => authenticateWithGoogle(credentials, withWebServer))
     .then(saveAuthenticationConfig)
     .then(cleanUp)
     .then(() => {
       console.log('Successfully Authenticated with Google Drive!'.green);
     })
     .catch(err => {
       console.log('Error running auth command'.underline.red);
+      console.log(err.red);
       throw err;
     });
 }
@@ -73,7 +89,7 @@ function getCredentialsFromFile(clientSecretPath) {
       return {
         client_id: credentials.installed.client_id,
         client_secret: credentials.installed.client_secret,
-        redirect_uri: credentials.installed.redirect_uris[0],
+        redirect_uri: credentials.installed.redirect_uris[0]
       };
     })
     .catch(SyntaxError, err => {
@@ -137,7 +153,7 @@ function authenticateWithGoogle(credentials, withWebServer) {
     } else {
       const rl = readline.createInterface({
         input: process.stdin,
-        output: process.stdout,
+        output: process.stdout
       });
 
       rl.question('Copy the provided code and paste it here: ', code => {
@@ -160,6 +176,10 @@ function saveAuthenticationConfig(credentials) {
   );
 }
 
+/**
+ * Destroys the stdin
+ * @todo put inline if only used here
+ */
 function cleanUp() {
   process.stdin.destroy();
 }