diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..ae781c1
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,37 @@
+# Javascript Node CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-javascript/ for more details
+#
+version: 2
+jobs:
+  build:
+    docker:
+      # specify the version you desire here
+      - image: circleci/node:7.10
+      
+      # Specify service dependencies here if necessary
+      # CircleCI maintains a library of pre-built images
+      # documented at https://circleci.com/docs/2.0/circleci-images/
+      # - image: circleci/mongo:3.4.4
+
+    working_directory: ~/repo
+
+    steps:
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+          - v1-dependencies-{{ checksum "package.json" }}
+          # fallback to using the latest cache if no exact match is found
+          - v1-dependencies-
+
+      - run: yarn install
+
+      - save_cache:
+          paths:
+            - node_modules
+          key: v1-dependencies-{{ checksum "package.json" }}
+        
+      # run tests!
+      - run: yarn test
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..424a56c
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,664 @@
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+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+    },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
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+}
diff --git a/package.json b/package.json
index 079a25e..d712531 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "src/tool.js",
   "scripts": {
     "start": "node src/server.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha"
   },
   "author": "chapman",
   "license": "ISC",
@@ -13,6 +13,7 @@
     "express": "^4.15.3"
   },
   "devDependencies": {
-    "chai": "^3.5.0"
+    "chai": "^3.5.0",
+    "mocha": "^3.5.0"
   }
 }
diff --git a/src/tool.js b/src/tool.js
index 0997882..629c64d 100644
--- a/src/tool.js
+++ b/src/tool.js
@@ -2,11 +2,11 @@ exports.genURL = (urlLength) => {
   var urlString = "";
   const sourceLetters = "ABCDEFGHJKMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789";
 
-  for(var genLoopIndex = 0; genLoopIndex < 50; genLoopIndex++){
+  for (var genLoopIndex = 0; genLoopIndex < urlLength; genLoopIndex++) {
 
     // Add a random letter to the urlString
     urlString += sourceLetters.charAt(Math.random() * (sourceLetters.length - 1))
   }
-
+  console.log(sourceLetters.length);
   return urlString
-}
+}
\ No newline at end of file