* Fork repository https://github.com/karank-spring2020/webapp.git 

* Navigate to webapp directory

* Run "npm install" command on terminal to install dependencies

* Run "npm test" command on terminal to test test cases

* Open POSTMAN
* To Create User -
    - Use v1/user & No Authentication
    - Success : 200 OK
        {         
            “id": "88cba988-3415-45d9-b459-8de0c65e3637”,
            "first_name": “Karan”,
            "last_name": “Aggarwal”,
            "email_address”: “[email protected]",
            “account_created”: "2020-01-30T01:01:08.130+0080",
            “account_updated”: "2020-01-30T01:02:70.160+0700"
         }
     - Failure : 400 BAD REQUEST

* To Get User -
    - Use v1/user/self & set Authentication to Basic Auth
    - Success : 200 OK
        {
         “id": "88cba988-3415-45d9-b459-8de0c65e3637”,
            "first_name": “Karan”,
            "last_name": “Aggarwal”,
            "email_address”: “[email protected]",
            “account_created”: "2020-01-30T01:01:08.130+0080",
            “account_updated”: "2020-01-30T01:02:70.160+0700"
        }
    - Failure : 401 UNAUTHORIZED     
        Access Denied
        
* To Update User
    - Use v1/user/self & set Authentication to Basic Auth
    - Success : 204 NO CONTENT
    - Failure : 400 BAD REQUEST
    
* To Create a Bill 
    - Use v1/bill/ & set Authentication to Basic Auth
    - Success : 201
        {
            "id": "75da0038-1ca2-4c8a-b381-6e8776f928dc",
            "owner_id": "b4afeb77-8c20-4843-aa57-fd9c2da494ee",
            "vendor": "Northeastern University",
            "bill_date": "2020-01-06T00:00:00.000+0000",
            "due_date": "2020-01-12T00:00:00.000+0000",
            "amount_due": 7000.51,
            "creationTime": "2020-01-26T23:48:42.797+0000",
            "updatedTime": "2020-01-26T23:48:42.797+0000",
            "categories": [
                 "college",
                 "spring2020",
                "tuition"
            ],
            "payment_status": "paid"
            }
    - Not Found : 404 //wrong url
    - UnAuthorized : 401 //unauthorized
         Access Denied
            
* To retrieve all the bills of specefic user
    - Use v1/bills/ & set Authentication to Basic Auth
    - Success : 200 
        {
            "id": "c969471b-d836-4036-b925-c809a81ecbc9",
            "owner_id": "b4afeb77-8c20-4843-aa57-fd9c2da494ee",
            "vendor": "Northeastern University",
            "bill_date": "2020-01-06T00:00:00.000+0000",
            "due_date": "2020-01-12T00:00:00.000+0000",
            "amount_due": 200.0,
            "creationTime": "2020-01-26T23:48:46.197+0000",
            "updatedTime": "2020-01-26T23:48:46.197+0000",
            "categories": [
                "college"
            ],
            "payment_status": "paid"
        }
    - No content : 204 //if no bills        
    - Not Found : 404 //wrong url
    - UnAuthorized : 401 //unauthorized
        Access Denied
        
* To retrieve bill based on id/ to delete bill based on id/ to update bill based on id
    - Use v1/bill/{id] & set Authentication to Basic Auth
    * For retrieve bill i.e. Get request
    -Success : 200
        {
            "id": "e61dfed9-a078-4bb5-aa5e-cc9d1ebe473d",
            "owner_id": "554ded24-27d9-4660-8ef5-912aaf0314ef",
            "vendor": "Northeastern University",
            "bill_date": "2020-01-06T00:00:00.000+0000",
            "due_date": "2020-01-12T00:00:00.000+0000",
            "amount_due": 7000.51,
            "creationTime": "2020-01-26T20:18:12.000+0000",
            "updatedTime": "2020-01-26T20:18:12.000+0000",
            "categories": [
                "college",
                "spring2020",
                "tuition"
            ],
            "payment_status": "paid"
        }
    - No content : 204 //if no bills        
    - Not Found : 404 //wrong url
    - UnAuthorized : 401 //unauthorized
        Access Denied
             
    * For delete bill i.e. Delete Request
    - Success : 200
    - No content : 204 //if no bills        
    - Not Found : 404 //wrong url
    - UnAuthorized : 401 //unauthorized
        Access Denied
    
    * For update bill i.e. PUT request
    - Success : 200
    - No content : 204 //if no bills        
    - Not Found : 404 //wrong url
    - UnAuthorized : 401 //unauthorized
        Access Denied
    
* To attach a file to bill:
    -Use : localhost:8080/v1/bill/{billId}/file
    -Success : 201
        {
            "id": "aab496d7-f065-4dc9-9e0a-1e95ef3ff8cb",
            "fileName": "imgb6dbaccba9e.jpg"",
            "url": "/Users/nupur/cloudGit/webapp/imgb6dbaccba9e.jpg",
            "uploadeDate": "2020-02-10T21:31:07.335+0000"
        }
    - 404 : NotFound/UnAuthorized
    
* To get a file information of bill:
    -Use : localhost:8080/v1/bill/{billId}/file/{fileId}
    -Success : 200
        {
            "id": "aab496d7-f065-4dc9-9e0a-1e95ef3ff8cb",
            "fileName": "imgb6dbaccba9edbaccba9e.jpg",
            "url": "/Users/nupur/cloudGit/webapp/imgb6dbaccba9edbaccba9e.jpg",
            "uploadeDate": "2020-02-10T21:31:07.335+0000"
        }
    - 404 : NotFound/UnAuthorized

* To delete a file attached to bill:
    -Use : localhost:8080/v1/bill/{billId}/file/{fileId}
    -No Content : 204     

* Used Mocha chai for unit testing for creation of user.
* Run Application using "Run All Tests"