How to add one month to a given date for Assertion

[mpw83]

I want to assert a date from a response in JSON. 

Expected Value is ApplicationDate + One Month

Application date is like '2019-03-04'. So the Expected Date should be '2019-04-04' 

I know there are so many ways to do this by adding one month to the current system date. But how to add one month to a given date? Thanks 

[Lucian]

Hey @mpw83 ,

I can help you with this. I have a question though... What does it mean to add a month?

For instance, what would be the expected result for you if the application date were to be "2019-03-31"? (April has only 30 days so April 31th would be valid).

[mpw83]

@Lucian , Thanks for the reply, Actually adding a calendar month. 

if the application date were to be "2019-03-31 then + one month date should be 2019-04-30

if application date = 28/02/2019 then + one month date should be 28/03/2019

if application date = 15/01/2019 then + one month date should be 15/02/2019 .. etc 

[nmrao]

If you use TimeCategory, it is easy to add a month.

Please see the example in the below link:
http://mrhaki.blogspot.com/2009/09/groovy-goodness-date-and-time-durations.html

[Lucian · Accepted solution]

Hi again,

Something like this works for me:

import java.time.*
import java.time.format.*

def initialDateString = "2019-03-31" // this should be extracted dynamically but for the purpose of this example I guess it's ok

// Create a LocalDate object
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd")
LocalDate date = LocalDate.parse(initialDateString, formatter)

date = date.plusMonths(1) // Update the date
def modifiedDateString = date.format(formatter) // Create a String in case you need to process this date further

Let me know if I can help you further!

[mpw83]

@Lucian , this is what I want, Thank you so much. 

[mpw83]

@nmrao thank you very much for the post. Very useful 

[nmrao]

The credits should go to the author (Mr. HAKI), I just referred.