Unit testing (jest)

Author: akrouk

.gitignore

@@ -105,3 +105,6 @@ dist
 
 # Database
 *.db
+
+# Jest
+*.test.js

lib/queries.js

@@ -24,11 +24,11 @@ function close() {
 /**
  * Dynamically opens and closes a database if a file is provided.
  * @param {string} file 
- * @returns {Promise<Function>}
+ * @returns {void|Promise<Function>}
  */
 function dynamicAccess(file) {
     // If file is undefined or db is already open, do nothing
-    if (!file || db) {
+    if (!file || db instanceof PromiseDB) {
         return;
     }
 
@@ -47,8 +47,13 @@ module.exports = {
     // Export database open/close functions (synchronous!)
     open, close,
 
-    print: function() {
-        console.log(typeof db);
+    /**
+     * Retrieves the database, if open.
+     * @returns {PromiseDB}
+     */
+    getDatabase: function() {
+        if (db instanceof PromiseDB) return db;
+        throw new Error('Database is not open.');
     },
 
     /**