diff --git a/app/__init__.py b/app/__init__.py
index 4ab3975b8..8f89d9ee1 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -8,6 +8,7 @@
 migrate = Migrate()
 load_dotenv()
 
+
 def create_app(test_config=None):
     app = Flask(__name__)
     app.url_map.strict_slashes = False
@@ -21,7 +22,6 @@ def create_app(test_config=None):
         app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get(
             "SQLALCHEMY_TEST_DATABASE_URI")
 
-    
     # import models for Alembic Setup
     from app.models.customer import Customer
     from app.models.video import Video
@@ -31,6 +31,12 @@ def create_app(test_config=None):
     db.init_app(app)
     migrate.init_app(app, db)
 
-    #Register Blueprints Here
+    # Register Blueprints Here
+    from .video_routes import video_bp
+    app.register_blueprint(video_bp)
+    from .customer_routes import customers_bp
+    app.register_blueprint(customers_bp)
+    from .rental_routes import rentals_bp
+    app.register_blueprint(rentals_bp)
 
-    return app
\ No newline at end of file
+    return app
diff --git a/app/customer_routes.py b/app/customer_routes.py
new file mode 100644
index 000000000..90caf77d4
--- /dev/null
+++ b/app/customer_routes.py
@@ -0,0 +1,95 @@
+from app import db
+from app.models.customer import Customer
+from flask import Blueprint, jsonify, request
+from datetime import datetime
+
+customers_bp = Blueprint("customers_bp", __name__, url_prefix="/customers")
+
+
+@customers_bp.route("", methods=["POST"])
+def customer_create():
+    request_body = request.get_json()
+
+    if "name" not in request_body or "phone" not in request_body or "postal_code" not in request_body:
+        response_body ={}
+        if "name" not in request_body:
+            response_body["details"] = "Request body must include name."
+        elif "phone" not in request_body:
+            response_body["details"] = "Request body must include phone."
+        elif "postal_code" not in request_body:
+            response_body["details"] = "Request body must include postal_code."
+        return jsonify(response_body), 400
+    
+    new_customer = Customer(
+        name=request_body["name"],
+        phone=request_body["phone"],
+        postal_code=request_body["postal_code"],
+
+    )
+    db.session.add(new_customer)
+    db.session.commit()
+
+    return jsonify({"id": new_customer.customer_id}), 201
+
+
+@customers_bp.route("", methods=["GET"])
+def handle_customers():
+    customers = Customer.query.all()
+    response_body = []
+    for customer in customers:
+        response_body.append(customer.customer_dict())
+
+    return jsonify(response_body), 200
+
+
+@customers_bp.route("/<customer_id>", methods=["GET"])
+def customer_get(customer_id):
+    try:
+        customer = Customer.query.get(customer_id)
+    except:
+        return jsonify({"message": f"Customer {customer_id} was not found"}), 400
+            
+    if customer is None:
+        return jsonify({"message": f"Customer {customer_id} was not found"}), 404
+
+    return jsonify(customer.customer_dict()), 200
+
+    return jsonify(customer.customer_dict()), 200
+
+# WORK IN PROGRESS
+@customers_bp.route("/<customer_id>", methods=["PUT"])
+def customer_put(customer_id):
+    customer = Customer.query.get(customer_id)
+    if customer == None:
+        return jsonify({"message": f"Customer {customer_id} was not found"}), 404
+
+    request_body = request.get_json()
+    if "name" not in request_body or "phone" not in request_body or "postal_code" not in request_body:
+        return jsonify(), 400 
+
+    customer.name = request_body["name"]
+    customer.phone = request_body["phone"]
+    customer.postal_code = request_body["postal_code"]
+
+    if "name" in request_body or "phone" in request_body or "postal_code" in request_body:
+        response_body ={}
+        response_body["name"] = customer.name
+        response_body["phone"] = customer.phone 
+        response_body["postal_code"] = customer.postal_code 
+
+    db.session.commit()
+
+    return jsonify(response_body), 200
+
+
+@customers_bp.route("/<customer_id>", methods=["DELETE"])
+def customer_delete(customer_id):
+    customer = Customer.query.get(customer_id)
+
+    if customer == None:
+        return jsonify({"message": f"Customer {customer_id} was not found"}), 404
+
+    db.session.delete(customer)
+    db.session.commit()
+
+    return jsonify({"id": customer.customer_id}), 200
\ No newline at end of file
diff --git a/app/models/customer.py b/app/models/customer.py
index e3aece97b..e1c010e31 100644
--- a/app/models/customer.py
+++ b/app/models/customer.py
@@ -1,4 +1,31 @@
 from app import db
+from sqlalchemy.sql.functions import func
 
 class Customer(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
\ No newline at end of file
+    customer_id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    name = db.Column(db.String)
+    phone = db.Column(db.String)
+    postal_code = db.Column(db.String)
+    # server_default tells sqlA to pass the default value as part of the CREATE TABLE
+    # func.now() or func.current_timestamp() - they are aliases of each other. This tells DB to calcaate the timestamp itself
+    registered_at = db.Column(db.DateTime(timezone=True), server_default=func.now())
+    #I DON'T KNOW IF THIS IS CORRECT
+    #adding videos attribute to Customer Model
+    videos = db.relationship("Video", secondary="rental", backref="customers")
+    #videos = db.relationship("Rental", back_populates="customer")
+
+ 
+    def customer_dict(self):
+        dict = {
+            "id": self.customer_id,
+            "name": self.name,
+            "phone": self.phone,
+            "postal_code": self.postal_code,
+            # weekday|day of month (16)|month name|year|local version of time|, UTC offset +HHMM or -HHMM
+            "registered_at": self.registered_at.strftime("%a, %-d %b %Y %X %z")
+    }
+    #     if self.registered_at is not None:
+    #         dict["registered_at"] = self.registered_at.strfttime("%a, %-d %b %Y %X %z")
+            
+        return dict
+
diff --git a/app/models/rental.py b/app/models/rental.py
index 11009e593..92fec9e77 100644
--- a/app/models/rental.py
+++ b/app/models/rental.py
@@ -1,4 +1,13 @@
 from app import db
+from datetime import datetime, timedelta
 
 class Rental(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
\ No newline at end of file
+    rental_id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    customer_id = db.Column(db.Integer, db.ForeignKey('customer.customer_id'), primary_key=True,nullable=False)
+    video_id = db.Column(db.Integer, db.ForeignKey('video.video_id'), primary_key=True,nullable=False)
+    due_date = db.Column(db.DateTime, nullable=False, default=datetime.utcnow() + timedelta(days = 7))
+    #bool is truthy and falsey
+    checked_out = db.Column(db.Boolean, default=False)
+    #need to update check_in and check_out routes. Change check_in to True and False for checkout
+    #video = db.relationship("Video", back_populates="customers")
+    #customer = db.releationship("Customer", back_populates="videos")
diff --git a/app/models/video.py b/app/models/video.py
index 9893a6ef9..d41f5cc98 100644
--- a/app/models/video.py
+++ b/app/models/video.py
@@ -1,4 +1,17 @@
 from app import db
 
 class Video(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
\ No newline at end of file
+    video_id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    title = db.Column(db.String)
+    release_date = db.Column(db.DateTime)
+    #how many I own
+    total_inventory = db.Column(db.Integer)
+    #customers = db.relationship("Rental", back_populates="video")
+    #checked_out column
+    def to_dict(self):
+        return {
+            "id": self.video_id,
+            "title": self.title,
+            "release_date": self.release_date,
+            "total_inventory": self.total_inventory
+        }
\ No newline at end of file
diff --git a/app/rental_routes.py b/app/rental_routes.py
new file mode 100644
index 000000000..8a52a5fb5
--- /dev/null
+++ b/app/rental_routes.py
@@ -0,0 +1,174 @@
+from flask.wrappers import Response
+from app import db
+from app.customer_routes import customers_bp
+from app.video_routes import video_bp
+from app.models.customer import Customer
+from app.models.video import Video
+from app.models.rental import Rental
+from flask import Blueprint, jsonify, request
+from datetime import datetime
+
+rentals_bp = Blueprint("rentals_bp", __name__, url_prefix="/rentals")
+
+
+@rentals_bp.route("/check-out", methods=["POST"])
+def rentals_checkout():
+    #{"c_id": [1], "v_id": [4]}
+    request_body = request.get_json()
+
+    # is this key string not in the request_body return 400
+    if "customer_id" not in request_body or "video_id" not in request_body:
+        return jsonify(), 400
+
+    # get instance of a customer and an instance of a video and return 404 if it's None
+    customer = Customer.query.get(request_body["customer_id"])
+    video = Video.query.get(request_body["video_id"])
+    if video is None or customer is None:
+        return jsonify(), 404
+
+    # filtering the video ID & checked_out attributes and count the records
+    rentals = Rental.query.filter_by(
+        video_id=video.video_id, checked_out=True).count()
+
+    # finding avaliable inventory
+    available_inventory = video.total_inventory - rentals
+
+    if available_inventory == 0:
+        return jsonify({"message": "Could not perform checkout"}), 400
+
+    # Instantiate a new instance for rental
+    new_rental = Rental(
+        video_id=video.video_id,
+        customer_id=customer.customer_id
+    )
+
+    # staging rental instance to database
+    db.session.add(new_rental)
+    # set rental instance to True
+    new_rental.checked_out = True
+    # commit to database
+    db.session.commit()
+
+    # count() - tells how many rentals are currently checked out
+    videos_checked_out = Rental.query.filter_by(
+        video_id=video.video_id, checked_out=True).count()
+
+    available_inventory = video.total_inventory - videos_checked_out
+
+    # return the response body and status code
+    return jsonify({
+        "video_id": new_rental.video_id,
+        "customer_id": new_rental.customer_id,
+        "videos_checked_out_count": videos_checked_out,
+        "available_inventory": available_inventory
+    }), 200
+
+
+@rentals_bp.route("/check-in", methods=["POST"])
+def rentals_checkin():
+    request_body = request.get_json()
+
+    # checks that the required request body parameters are in request
+    if "customer_id" not in request_body or "video_id" not in request_body:
+        return jsonify(), 400
+
+    # store customer/video instance into variables. If customer/video does not exist, returns 404
+    customer = Customer.query.get(request_body["customer_id"])
+    video = Video.query.get(request_body["video_id"])
+    if customer is None or video is None:
+        return jsonify(), 404
+
+    # query through Rental to find matching customer and video ids and return first on the list
+    rental = Rental.query.filter_by(
+        customer_id=customer.customer_id, video_id=video.video_id).first()
+    # (customer_id=customer.customer_id, video_id=video.video_id, checked_out=True).first() #this also passed the test
+
+    # "is" (compare location in memory) is 50% faster than "==" (comparing values)
+    if rental is None:
+        return jsonify({"message": f"No outstanding rentals for customer {customer.customer_id} and video {video.video_id}"}), 400
+
+    # rental.checked_out = True
+    db.session.commit()
+
+    # return response body
+    videos_checked_out = Rental.query.filter_by(
+        video_id=video.video_id, checked_out=False).count()
+
+    # finding avaiable inventory
+    available_inventory = video.total_inventory - videos_checked_out
+
+    return jsonify({
+        "video_id": video.video_id,
+        "customer_id": customer.customer_id,
+        "videos_checked_out_count": videos_checked_out,
+        "available_inventory": available_inventory
+    })
+
+
+@customers_bp.route("/<customer_id>/rentals", methods=["GET"])
+def customer_read(customer_id):
+    """ List the videos a customer currently has checked out """
+    request_body = request.get_json()
+
+    # checks to see if customer exists. If not, returns 404
+    customer = Customer.query.get(customer_id)
+    if customer is None:
+        return jsonify({"message": f"Customer {customer_id} was not found"}), 404
+
+    # sets up empty list to store a customer's checked out videos & iterates through customer.videos to retreive all videos a customer currently has
+    checked_out = []
+    for video in customer.videos:
+        checked_out.append(video)
+
+    # gets rental instance for each video a customer has
+    rentals = Rental.query.all()
+    customer_rentals = []
+    for video in checked_out:
+        for rental in rentals:
+            if video.video_id == rental.video_id and customer.customer_id == rental.customer_id:
+                customer_rentals.append(rental)
+
+    # create response body
+    response_body = []
+    for rental in customer_rentals:
+        response_body.append({
+            "release_date": video.release_date,
+            "title": video.title,
+            "due_date": rental.due_date
+        })
+    return jsonify(response_body)
+
+
+@video_bp.route("/<video_id>/rentals", methods=["GET"])
+def video_read(video_id):
+    """ List the customers who currently have the video checked out """
+    request_body = request.get_json()
+
+    # checks to see if video exists. If not, returns 404
+    video = Video.query.get(video_id)
+    if video is None:
+        return jsonify({"message": f"Video {video_id} was not found"}), 404
+
+    # sets up empty list to store the video's current customers & iterates through video.customers to retreive all customers that currently have the video
+    current_customers = []
+    for customer in video.customers:
+        current_customers.append(customer)
+
+    # gets rental instance for each customer a video has
+    rentals = Rental.query.all()
+    video_rentals = []
+    for customer in current_customers:
+        for rental in rentals:
+            if video.video_id == rental.video_id and customer.customer_id == rental.customer_id:
+                video_rentals.append(rental)
+
+    # create response body
+    response_body = []
+    for rental in video_rentals:
+        response_body.append({
+            "due_date": rental.due_date,
+            "name": customer.name,
+            "phone": customer.phone,
+            "postal_code": customer.postal_code
+        })
+    return jsonify(response_body)
diff --git a/app/routes.py b/app/routes.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/app/video_routes.py b/app/video_routes.py
new file mode 100644
index 000000000..71124304f
--- /dev/null
+++ b/app/video_routes.py
@@ -0,0 +1,90 @@
+from app.models.video import Video
+from app import db
+from flask import Blueprint, request, jsonify
+from datetime import datetime
+import os, requests, json
+
+video_bp = Blueprint("videos", __name__, url_prefix="/videos")
+
+# /videos routes
+@video_bp.route("", methods=["GET"])
+def get_videos():
+    videos = Video.query.all()
+    if videos is None:
+        return jsonify([])
+    response_body = []
+    for video in videos:
+        response_body.append(video.to_dict())
+    return jsonify(response_body)
+
+@video_bp.route("", methods=["POST"])
+def create_video():
+    request_body = request.get_json()
+    if "title" not in request_body or "release_date" not in request_body or "total_inventory" not in request_body:
+        response_body = {}
+        if "title" not in request_body:
+            response_body["details"] = "Request body must include title."
+        elif "release_date" not in request_body:
+            response_body["details"] = "Request body must include release_date."
+        elif "total_inventory" not in request_body:
+            response_body["details"] = "Request body must include total_inventory."
+        return jsonify(response_body), 400
+    
+    new_video = Video(
+        title=request_body["title"],
+        release_date=request_body["release_date"],
+        total_inventory=request_body["total_inventory"]
+        )
+    db.session.add(new_video)
+    db.session.commit()
+
+    response_body=new_video.to_dict()
+    response_body["id"] = new_video.video_id
+    return jsonify(response_body), 201
+
+# /videos/<video_id> routes
+@video_bp.route("/<video_id>", methods=["GET"])
+def get_video(video_id):
+    ## try
+    # if not isinstance(video_id, int):
+    ## or
+    # if not video_id.is_integer():
+    #     return jsonify(), 400
+    # maybe try-except? for invalid id test
+    try: 
+        video = Video.query.get(video_id)
+    except:
+        return jsonify(), 400
+    if video is None:
+        return jsonify({"message": f"Video {video_id} was not found"}), 404
+    response_body = video.to_dict()
+    return jsonify(response_body)
+
+@video_bp.route("/<video_id>", methods=["PUT"])
+def update_video(video_id):
+    video = Video.query.get(video_id)
+    if video is None:
+        return jsonify({"message": f"Video {video_id} was not found"}), 404
+    
+    request_body = request.get_json()
+    if "title" not in request_body or "release_date" not in request_body or "total_inventory" not in request_body:
+        return jsonify(), 400
+    
+    video.title = request_body["title"]
+    video.release_date = request_body["release_date"]
+    video.total_inventory = request_body["total_inventory"]
+    db.session.commit()
+
+    response_body = video.to_dict()
+    return jsonify(response_body)
+
+@video_bp.route("/<video_id>", methods=["DELETE"])
+def delete_video(video_id):
+    video = Video.query.get(video_id)
+    if video is None:
+        return jsonify({"message": f"Video {video_id} was not found"}), 404
+    db.session.delete(video)
+    db.session.commit()
+
+    response_body = {"id": video.video_id}
+    return jsonify(response_body)
\ No newline at end of file
diff --git a/migrations/README b/migrations/README
new file mode 100644
index 000000000..98e4f9c44
--- /dev/null
+++ b/migrations/README
@@ -0,0 +1 @@
+Generic single-database configuration.
\ No newline at end of file
diff --git a/migrations/alembic.ini b/migrations/alembic.ini
new file mode 100644
index 000000000..f8ed4801f
--- /dev/null
+++ b/migrations/alembic.ini
@@ -0,0 +1,45 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
diff --git a/migrations/env.py b/migrations/env.py
new file mode 100644
index 000000000..8b3fb3353
--- /dev/null
+++ b/migrations/env.py
@@ -0,0 +1,96 @@
+from __future__ import with_statement
+
+import logging
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+from flask import current_app
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option(
+    'sqlalchemy.url',
+    str(current_app.extensions['migrate'].db.engine.url).replace('%', '%%'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=target_metadata, literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix='sqlalchemy.',
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            process_revision_directives=process_revision_directives,
+            **current_app.extensions['migrate'].configure_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/migrations/script.py.mako b/migrations/script.py.mako
new file mode 100644
index 000000000..2c0156303
--- /dev/null
+++ b/migrations/script.py.mako
@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}
diff --git a/migrations/versions/d4e5fb64e076_create_base_models.py b/migrations/versions/d4e5fb64e076_create_base_models.py
new file mode 100644
index 000000000..d8bac7d5f
--- /dev/null
+++ b/migrations/versions/d4e5fb64e076_create_base_models.py
@@ -0,0 +1,48 @@
+"""create base models
+
+Revision ID: d4e5fb64e076
+Revises: 
+Create Date: 2021-11-09 07:19:35.458780
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd4e5fb64e076'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('customer',
+    sa.Column('customer_id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.String(), nullable=True),
+    sa.Column('phone', sa.String(), nullable=True),
+    sa.Column('postal_code', sa.Integer(), nullable=True),
+    sa.Column('registered_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('customer_id')
+    )
+    op.create_table('rental',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('video',
+    sa.Column('video_id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('title', sa.String(), nullable=True),
+    sa.Column('release_date', sa.DateTime(), nullable=True),
+    sa.Column('total_inventory', sa.Integer(), nullable=True),
+    sa.PrimaryKeyConstraint('video_id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('video')
+    op.drop_table('rental')
+    op.drop_table('customer')
+    # ### end Alembic commands ###
diff --git a/tests/test_wave_01.py b/tests/test_wave_01.py
index 8d32038f2..39346455a 100644
--- a/tests/test_wave_01.py
+++ b/tests/test_wave_01.py
@@ -10,6 +10,7 @@
 CUSTOMER_NAME = "A Brand New Customer"
 CUSTOMER_ID = 1
 CUSTOMER_POSTAL_CODE = "12345"
+# CUSTOMER_POSTAL_CODE = 12345 
 CUSTOMER_PHONE = "123-123-1234"
 
 # --------------------------------
@@ -17,6 +18,8 @@
 # --------------------------------
 
 # READ
+
+
 def test_get_videos_no_saved_videos(client):
     # Act
     response = client.get("/videos")
@@ -26,6 +29,7 @@ def test_get_videos_no_saved_videos(client):
     assert response.status_code == 200
     assert response_body == []
 
+
 def test_get_videos_one_saved_video(client, one_video):
     # Act
     response = client.get("/videos")
@@ -38,6 +42,7 @@ def test_get_videos_one_saved_video(client, one_video):
     assert response_body[0]["id"] == VIDEO_ID
     assert response_body[0]["total_inventory"] == VIDEO_INVENTORY
 
+
 def test_get_video(client, one_video):
     # Act
     response = client.get("/videos/1")
@@ -49,6 +54,7 @@ def test_get_video(client, one_video):
     assert response_body["id"] == VIDEO_ID
     assert response_body["total_inventory"] == VIDEO_INVENTORY
 
+
 def test_get_video_not_found(client):
     # Act
     response = client.get("/videos/1")
@@ -58,6 +64,7 @@ def test_get_video_not_found(client):
     assert response.status_code == 404
     assert response_body == {"message": "Video 1 was not found"}
 
+
 def test_get_invalid_video_id(client, one_video):
     # Act
     response = client.get("/videos/hello")
@@ -89,6 +96,7 @@ def test_create_video(client):
     assert new_video
     assert new_video.title == VIDEO_TITLE
 
+
 def test_create_video_must_contain_title(client):
     # Act
     response = client.post("/videos", json={
@@ -103,6 +111,7 @@ def test_create_video_must_contain_title(client):
     assert response.status_code == 400
     assert Video.query.all() == []
 
+
 def test_create_video_must_contain_release_date(client):
     # Act
     response = client.post("/videos", json={
@@ -117,6 +126,7 @@ def test_create_video_must_contain_release_date(client):
     assert response.status_code == 400
     assert Video.query.all() == []
 
+
 def test_create_video_must_contain_inventory(client):
     # Act
     response = client.post("/videos", json={
@@ -131,6 +141,8 @@ def test_create_video_must_contain_inventory(client):
     assert Video.query.all() == []
 
 # DELETE
+
+
 def test_delete_video(client, one_video):
     # Act
     response = client.delete("/videos/1")
@@ -142,6 +154,7 @@ def test_delete_video(client, one_video):
     assert response.status_code == 200
     assert Video.query.get(1) == None
 
+
 def test_delete_video_not_found(client):
     # Act
     response = client.delete("/videos/1")
@@ -152,6 +165,7 @@ def test_delete_video_not_found(client):
     assert response.status_code == 404
     assert Video.query.all() == []
 
+
 def test_update_video(client, one_video):
     # Act
     response = client.put("/videos/1", json={
@@ -171,6 +185,7 @@ def test_update_video(client, one_video):
     assert video.title == "Updated Video Title"
     assert video.total_inventory == 2
 
+
 def test_update_video_not_found(client):
     # Act
     response = client.put("/videos/1", json={
@@ -184,6 +199,7 @@ def test_update_video_not_found(client):
     assert response.status_code == 404
     assert response_body == {"message": "Video 1 was not found"}
 
+
 def test_update_video_invalid_data(client, one_video):
     # Act
     response = client.put("/videos/1", json={
@@ -209,6 +225,7 @@ def test_get_customers_no_saved_customers(client):
     assert response.status_code == 200
     assert response_body == []
 
+
 def test_get_customers_one_saved_customer(client, one_customer):
     # Act
     response = client.get("/customers")
@@ -220,7 +237,8 @@ def test_get_customers_one_saved_customer(client, one_customer):
     assert response_body[0]["name"] == CUSTOMER_NAME
     assert response_body[0]["id"] == CUSTOMER_ID
     assert response_body[0]["phone"] == CUSTOMER_PHONE
-    assert response_body[0]["postal_code"] == CUSTOMER_POSTAL_CODE
+    assert response_body[0]["postal_code"] == CUSTOMER_POSTAL_CODE #another string
+
 
 def test_get_customer(client, one_customer):
     # Act
@@ -232,7 +250,8 @@ def test_get_customer(client, one_customer):
     assert response_body["name"] == CUSTOMER_NAME
     assert response_body["id"] == CUSTOMER_ID
     assert response_body["phone"] == CUSTOMER_PHONE
-    assert response_body["postal_code"] == CUSTOMER_POSTAL_CODE
+    assert response_body["postal_code"] == CUSTOMER_POSTAL_CODE #another string
+
 
 def test_get_customer_not_found(client):
     # Act
@@ -243,6 +262,7 @@ def test_get_customer_not_found(client):
     assert response.status_code == 404
     assert response_body == {"message": "Customer 1 was not found"}
 
+
 def test_get_invalid_customer_id(client, one_customer):
     # Act
     response = client.get("/customers/hello")
@@ -251,6 +271,8 @@ def test_get_invalid_customer_id(client, one_customer):
     assert response.status_code == 400
 
 # CREATE
+
+
 def test_create_customer(client):
     # Act
     response = client.post("/customers", json={
@@ -272,6 +294,7 @@ def test_create_customer(client):
     assert new_customer.postal_code == CUSTOMER_POSTAL_CODE
     assert new_customer.phone == CUSTOMER_PHONE
 
+
 def test_create_customer_must_contain_postal(client):
     # Act
     response = client.post("/customers", json={
@@ -286,6 +309,7 @@ def test_create_customer_must_contain_postal(client):
     assert response.status_code == 400
     assert Customer.query.all() == []
 
+
 def test_create_customer_must_contain_name(client):
     # Act
     response = client.post("/customers", json={
@@ -300,6 +324,7 @@ def test_create_customer_must_contain_name(client):
     assert response.status_code == 400
     assert Customer.query.all() == []
 
+
 def test_create_customer_must_contain_phone(client):
     # Act
     response = client.post("/customers", json={
@@ -314,6 +339,8 @@ def test_create_customer_must_contain_phone(client):
     assert Customer.query.all() == []
 
 # DELETE
+
+
 def test_delete_customer(client, one_customer):
     # Act
     response = client.delete("/customers/1")
@@ -324,6 +351,7 @@ def test_delete_customer(client, one_customer):
     assert response.status_code == 200
     assert Customer.query.get(1) == None
 
+
 def test_delete_customer_not_found(client):
     # Act
     response = client.delete("/customers/1")
@@ -334,12 +362,15 @@ def test_delete_customer_not_found(client):
     assert response.status_code == 404
     assert Customer.query.all() == []
 
+
 def test_update_customer(client, one_customer):
     # Act
     response = client.put("/customers/1", json={
         "name": f"Updated ${CUSTOMER_NAME}",
         "phone": f"Updated ${CUSTOMER_PHONE}",
+        # postal_code data type is an integer but the test case is passing in a string.
         "postal_code": f"Updated ${CUSTOMER_POSTAL_CODE}"
+        # "postal_code": CUSTOMER_POSTAL_CODE+5
     })
     response_body = response.get_json()
 
@@ -348,12 +379,14 @@ def test_update_customer(client, one_customer):
     assert response_body["name"] == f"Updated ${CUSTOMER_NAME}"
     assert response_body["phone"] == f"Updated ${CUSTOMER_PHONE}"
     assert response_body["postal_code"] == f"Updated ${CUSTOMER_POSTAL_CODE}"
+    # assert response_body["postal_code"] == CUSTOMER_POSTAL_CODE+5
 
     customer = Customer.query.get(1)
     assert customer.name == f"Updated ${CUSTOMER_NAME}"
     assert customer.phone == f"Updated ${CUSTOMER_PHONE}"
     assert customer.postal_code == f"Updated ${CUSTOMER_POSTAL_CODE}"
-    
+    # assert customer.postal_code == CUSTOMER_POSTAL_CODE+5
+
 
 def test_update_customer_not_found(client):
     # Act
@@ -368,6 +401,7 @@ def test_update_customer_not_found(client):
     assert response.status_code == 404
     assert response_body == {"message": "Customer 1 was not found"}
 
+
 def test_update_customer_invalid_data(client, one_customer):
     # Act
     response = client.put("/customers/1", json={
@@ -377,9 +411,3 @@ def test_update_customer_invalid_data(client, one_customer):
 
     # Assert
     assert response.status_code == 400
-
-
-
-
-
-