diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..d41a639
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,7 @@
+pytest:
+    stage: test
+    script:
+        - python -m venv .venv
+        - source ./.venv/scripts/activate
+        - pip install -r requirements.txt
+        - pytest
\ No newline at end of file
diff --git a/README.md b/README.md
index 991943a..fcc19a4 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,13 @@ python -m venv .venv
 pip install -r requirements.txt
 ```
 
+## Testing
+
+To run the full suite of unit tests for the webapp simply run the following command in the venv
+```sh
+pytest
+```
+
 ## Running
 
 ### Pre-Requisites
diff --git a/controllers/database/database.py b/controllers/database/database.py
index 69a120c..b43e1b1 100644
--- a/controllers/database/database.py
+++ b/controllers/database/database.py
@@ -1,14 +1,25 @@
 from abc import ABC, abstractmethod
 from typing import Mapping, Any 
 import sqlite3
+import os
 
 class DatabaseController(ABC):
-    __sqlitefile = "./data/wmgzon.db"
+    __data_dir = "./data/"
+    __db_name = "wmgzon.db"
+
+    # Use test file if necessary
+    if os.environ.get("ENVIRON") == "test":
+        __db_name = "test_" + __db_name
+
+    __sqlitefile = __data_dir + __db_name
+
 
     def __init__(self):
         self._conn = None
         try:
-            self._conn = sqlite3.connect(self.__sqlitefile)
+            # Creates a connection and specifies a flag to parse all types back down into
+            # Python declared types e.g. date & time
+            self._conn = sqlite3.connect(self.__sqlitefile, detect_types=sqlite3.PARSE_DECLTYPES)
         except sqlite3.Error as e:
             # Close the connection if still open
             if self._conn:
diff --git a/controllers/database/product.py b/controllers/database/product.py
index 81cd436..8a8c97e 100644
--- a/controllers/database/product.py
+++ b/controllers/database/product.py
@@ -2,7 +2,7 @@ from .database import DatabaseController
 from models.products.product import Product
 
 class ProductController(DatabaseController):
-    FIELDS = ['id', 'name', 'image', 'description', 'cost', 'category', 'sellerID', 'postedDate', 'quantity']
+    FIELDS = ['id', 'name', 'image', 'description', 'cost', 'category', 'sellerID', 'postedDate', 'quantityAvailable']
 
     def __init__(self):
         super().__init__()
@@ -20,7 +20,7 @@ class ProductController(DatabaseController):
         ]
 
         self._conn.execute(
-            "INSERT INTO Products (name, cost, image, description, category, sellerID, postedDate, quantityAvailable) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+            "INSERT INTO Products (name, image, description, cost, categoryID, sellerID, postedDate, quantityAvailable) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
             params
         )
         self._conn.commit()
@@ -46,7 +46,7 @@ class ProductController(DatabaseController):
         for product in rows:
             params = dict(zip(self.FIELDS, product))
             obj = self.new_instance(Product, params)
-            products.push(obj)
+            products.append(obj)
         
         return products
 
diff --git a/controllers/web/user.py b/controllers/web/user.py
index 0c5458e..a872cab 100644
--- a/controllers/web/user.py
+++ b/controllers/web/user.py
@@ -55,14 +55,12 @@ def signup():
         return redirect("/signup")
 
     database.create(Customer(
-        0,
         request.form['username'],
         sha512(request.form['password'].encode()).hexdigest(), # Hashed as soon as it is recieved on the backend
         request.form['firstname'],
         request.form['lastname'],
         request.form['email'],
-        "123",
-        "Customer"
+        "123"
     ))
 
     # Code 307 Preserves the original request (POST)
diff --git a/docker-compose.yml b/docker-compose.yml
index dd084ea..98d9fda 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,6 +6,9 @@ services:
         build: .
         environment:
             - APPSECRET=test
+            - ENVIRON=test
+            # - ENVIRON=prod
+        tty: true
         ports:
             - "5000:5000"
         volumes:
diff --git a/dockerfile b/dockerfile
index df68b1d..2b9c37f 100644
--- a/dockerfile
+++ b/dockerfile
@@ -3,5 +3,5 @@ COPY ./requirements.txt /app/requirements.txt
 WORKDIR /app
 RUN pip install -r requirements.txt
 COPY . /app
-RUN chmod +x scripts/run.sh
-CMD ["sh", "scripts/run.sh"]
\ No newline at end of file
+RUN chmod +x scripts/run.bash
+CMD ["bash", "scripts/run.bash"]
\ No newline at end of file
diff --git a/models/products/product.py b/models/products/product.py
index 34aaea8..ed65af6 100644
--- a/models/products/product.py
+++ b/models/products/product.py
@@ -10,8 +10,25 @@ class Product:
         self.image = "/static/assets/wmgzon.png"
         self.description = ""
         self.cost = 0.0
-        self.category = ""
+        self.category = 0
         self.sellerID = 0
         self.postedDate = datetime.now()
         self.quantityAvailable = 0
+
+    '''
+        Class constructor to instatiate a customer object
+
+        No additional properties are assigned to the customer
+    '''
+    def __init__(self, name: str, image: str, description: str, cost: float, category: int, 
+                 seller_id: int, posted_date: datetime, quantity_available: int):
+        self.id = 0
+        self.name = name
+        self.image = image
+        self.description = description
+        self.cost = cost
+        self.category = category
+        self.sellerID = seller_id
+        self.postedDate = posted_date
+        self.quantityAvailable = quantity_available
         
\ No newline at end of file
diff --git a/models/users/admin.py b/models/users/admin.py
index 917907f..946a53e 100644
--- a/models/users/admin.py
+++ b/models/users/admin.py
@@ -6,8 +6,8 @@ class Admin(User):
 
         No additional properties are assigned to the admin
     '''
-    def __init__(self, id: int, username: str, password: str, firstname: str, 
-                 lastname: str, email: str, phone: str, role: str):
+    def __init__(self, username: str, password: str, firstname: str, 
+                 lastname: str, email: str, phone: str):
         super().__init__(
-            id, username, password, firstname, lastname, email, phone, role
+            username, password, firstname, lastname, email, phone, "Admin"
         )
diff --git a/models/users/customer.py b/models/users/customer.py
index 34a5e64..0c571ad 100644
--- a/models/users/customer.py
+++ b/models/users/customer.py
@@ -6,9 +6,9 @@ class Customer(User):
 
         No additional properties are assigned to the customer
     '''
-    def __init__(self, id: int, username: str, password: str, firstname: str, 
-                 lastname: str, email: str, phone: str, role: str):
+    def __init__(self, username: str, password: str, firstname: str, 
+                 lastname: str, email: str, phone: str):
         super().__init__(
-            id, username, password, firstname, lastname, email, phone, role
+            username, password, firstname, lastname, email, phone, "Customer"
         )
 
diff --git a/models/users/seller.py b/models/users/seller.py
index 57473ac..28bb3b1 100644
--- a/models/users/seller.py
+++ b/models/users/seller.py
@@ -6,9 +6,9 @@ class Seller(User):
 
         No additional properties are assigned to the customer
     '''
-    def __init__(self, id: int, username: str, password: str, firstname: str, 
-                 lastname: str, email: str, phone: str, role: str):
+    def __init__(self, username: str, password: str, firstname: str, 
+                 lastname: str, email: str, phone: str):
         super().__init__(
-            id, username, password, firstname, lastname, email, phone, role
+            id, username, password, firstname, lastname, email, phone, "Seller"
         )
         self.store = ""
diff --git a/models/users/user.py b/models/users/user.py
index e282500..95d3206 100644
--- a/models/users/user.py
+++ b/models/users/user.py
@@ -3,9 +3,9 @@ from abc import ABC
 class User(ABC):
     """ Functional Class constructor to initialise all properties in the base object
         with a value """
-    def __init__(self, id: int, username: str, password: str, firstname: str, 
+    def __init__(self, username: str, password: str, firstname: str, 
                  lastname: str, email: str, phone: str, role: str):
-        self.id = id
+        self.id = 0
         self.username = username
         self.password = password
         self.firstName = firstname
diff --git a/scripts/__init__.py b/scripts/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/create_database.py b/scripts/create_database.py
index adcc2b9..442c5d5 100644
--- a/scripts/create_database.py
+++ b/scripts/create_database.py
@@ -16,9 +16,14 @@ def create_connection(path: str, filename: str):
         # Execute creation scripts
         sql = open("scripts/create_tables.sql", "r");
         conn.executescript(sql.read())
-        
-        print("SQLite Version: " + sqlite3.version)
+
         print("Table creation complete")
+
+        # Populate with test data if we are in Test Mode
+        if os.environ.get("ENVIRON") == "test":
+            sql = open("scripts/test_data.sql", "r");
+            conn.executescript(sql.read())
+
     except sqlite3.Error as e:
         print(e)
     finally:
@@ -32,5 +37,22 @@ def create_directory(dir: str):
     except FileExistsError:
         pass
 
-if __name__ == '__main__':
-    create_connection(r"./data/",  r"wmgzon.db")
+def remove_file(dir: str):
+    try:
+        os.remove(dir)
+    except FileNotFoundError:
+        pass
+
+
+
+dir = r"./data/"
+db_name = r"wmgzon.db"
+
+# Check for test environ
+if os.environ.get("ENVIRON") == "test":
+    # Remove the original test database
+    print("TEST ENVIRONMENT ACTIVE")
+    db_name = "test_" + db_name
+    remove_file(dir + db_name)
+
+create_connection(dir, db_name)
diff --git a/scripts/create_tables.sql b/scripts/create_tables.sql
index 5a1be62..5a582c2 100644
--- a/scripts/create_tables.sql
+++ b/scripts/create_tables.sql
@@ -9,8 +9,6 @@ CREATE TABLE IF NOT EXISTS Users (
     role TEXT NOT NULL
 );
 
-INSERT INTO Users (first_name, last_name, username, email, phone, password, role) VALUES ("Luke", "Else", "lukejelse04", "test@test.com", "07498 289321", "test213", "Customer");
-
 CREATE TABLE IF NOT EXISTS Categories (
     id INTEGER PRIMARY KEY,
     name TEXT NOT NULL UNIQUE
@@ -23,9 +21,6 @@ INSERT INTO Categories (name) VALUES ("Books");
 INSERT INTO Categories (name) VALUES ("Phones");
 INSERT INTO Categories (name) VALUES ("Music");
 
-
-
-
 CREATE TABLE IF NOT EXISTS Products (
     id INTEGER PRIMARY KEY,
     name TEXT NOT NULL,
@@ -39,21 +34,11 @@ CREATE TABLE IF NOT EXISTS Products (
     categoryID INTEGER NOT NULL
         REFERENCES Categories (id)
             ON DELETE CASCADE 
-            ON UPDATE NO ACTION
+            ON UPDATE NO ACTION,
+    postedDate TIMESTAMP,
+    quantityAvailable INTEGER DEFAULT 0
 );
 
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 2, 2);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 3, 3);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 3, 3);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 3, 3);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 6, 6);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 6, 6);
-INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 5, 5);
-
 CREATE TABLE IF NOT EXISTS Orders (
     id INTEGER PRIMARY KEY,
     sellerID TEXT NOT NULL
diff --git a/scripts/run.bash b/scripts/run.bash
new file mode 100644
index 0000000..7d52bd5
--- /dev/null
+++ b/scripts/run.bash
@@ -0,0 +1,2 @@
+#! /bin/bash
+pytest --disable-warnings && python ./scripts/create_database.py && python ./app.py
\ No newline at end of file
diff --git a/scripts/run.sh b/scripts/run.sh
deleted file mode 100644
index e9019d0..0000000
--- a/scripts/run.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#! /bin/sh
-
-python ./scripts/create_database.py 
-python ./app.py
\ No newline at end of file
diff --git a/scripts/test_data.sql b/scripts/test_data.sql
new file mode 100644
index 0000000..31cc24a
--- /dev/null
+++ b/scripts/test_data.sql
@@ -0,0 +1,37 @@
+INSERT INTO Users (first_name, last_name, username, email, phone, password, role) VALUES ("Luke", "Else", "lukejelse04", "test@test.com", "07498 289321", "test213", "Customer");
+
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 3);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
+
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 3);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
+
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 1);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 2);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 3);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 4);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
+INSERT INTO Products (name, image, description, cost, sellerID, categoryID) VALUES ("test", "assets/img/wmgzon.png", "this is a product", 20.99, 1, 6);
\ No newline at end of file
diff --git a/tests/database/__init__.py b/tests/database/__init__.py
new file mode 100644
index 0000000..3c3cf69
--- /dev/null
+++ b/tests/database/__init__.py
@@ -0,0 +1,8 @@
+# Ensure test environment is set before using
+import os
+
+# Setup test environment variables
+os.environ["ENVIRON"] = "test"
+
+# Runs the database creation scripts
+import scripts.create_database
\ No newline at end of file
diff --git a/tests/database/test_products.py b/tests/database/test_products.py
new file mode 100644
index 0000000..84c8ab2
--- /dev/null
+++ b/tests/database/test_products.py
@@ -0,0 +1,40 @@
+import pytest
+import sqlite3
+from datetime import datetime
+from controllers.database.product import ProductController
+from models.products.product import Product
+
+product = Product(
+        "product",
+        "image.png",
+        "description",
+        10.00,
+        1,
+        1,
+        datetime.now(),
+        1
+)
+
+# Tests a new product can be created
+def test_create_product():
+    db = ProductController()
+    db.create(product)
+
+# Tests the database maintains integrity when we try and add a product with the same details
+def test_duplicate_product():
+    db = ProductController()
+    with pytest.raises(sqlite3.IntegrityError):
+        db.create(product)
+
+# Test we the same product details get returned from the database
+def test_read_product():
+    db = ProductController()
+
+    # Test the same product is returned
+    new_product = db.read("product")
+    assert isinstance(new_product, list)
+    assert isinstance(new_product[0], Product)
+
+    # Update the ID on the item as database assigns new id
+    product.id = new_product[0].id
+    assert new_product[0].__dict__ == product.__dict__
diff --git a/tests/database/test_users.py b/tests/database/test_users.py
new file mode 100644
index 0000000..95281f8
--- /dev/null
+++ b/tests/database/test_users.py
@@ -0,0 +1,36 @@
+import pytest
+import sqlite3
+from controllers.database.user import UserController
+from models.users.customer import Customer
+
+customer = Customer(
+        "testuser",
+        "Password1",
+        "firstname",
+        "lastname",
+        "test@test",
+        "123456789"
+)
+
+# Tests a new user can be created
+def test_create_user():
+    db = UserController()
+    db.create(customer)
+
+# Tests the database maintains integrity when we try and add a user with the same details
+def test_duplicate_user():
+    db = UserController()
+    with pytest.raises(sqlite3.IntegrityError):
+        db.create(customer)
+
+# Test we the same user details get returned from the database
+def test_read_user():
+    db = UserController()
+
+    # Test the same user is returned
+    user = db.read("testuser")
+    assert isinstance(user, Customer)
+
+    # Update the ID on the item as database assigns new id
+    customer.id = user.id
+    assert user.__dict__ == customer.__dict__