### Note

This work package describes how values for the start date, the finish date and duration should change in response to changes to any of one of them. We created a [similar document with scenarios previously](https://community.openproject.org/wp/43539) when we added duration to the date picker, which made it easier:

* For devs to write test cases

* Document behaviour

* Use it for testing


**Note:** In all these scenarios, Saturday and Sunday are non-working days.

### Scenarios

#### Scenario 1 🟢

* Setup

* Start date: Wednesday, January 8, 2025

* Finish date: empty

* Duration: empty

* Working days only: on

* Change

* User enters a duration of 10 days

* Expected result:

* The finish date is set Tuesday, January 21 2025 (derived)


<br>

#### Scenario 2 🟢

* Setup

* Start date: empty

* Finish date: empty

* Duration: empty

* Change

* User enters a duration of 10 days

* Expected result:

* No date is added


<br>

#### Scenario 3 🟢

* Setup

* Start date: empty

* Finish date: Tuesday, January 21 2025

* Duration: empty

* Working days only: on

* Change

* User enters a duration of 10 days

* Expected result:

* The start date is set to Wednesday, January 8, 2025 (derived)


<br>

#### Scenario 4 🟢

* Setup

* Start date: Monday, January 13, 2025

* Finish date: Friday, January 24, 2025

* Duration: 10 days

* Working days only: on

* Change

* User changes duration to 11 days

* Expected result:

* The finish date is changed to Monday, January 27, 2025


<br>

#### Scenario 5 🟢

* Setup

* Start date: Monday, January 6, 2025

* Finish date: Monday, January 20, 2025

* Duration: 11

* Working days only: on

* Change

* User changes duration to 10 days

* Expected result:

* The finish date is changed to Friday, January 17, 2025


<br>

#### Scenario 6 🟢

* Setup

* Start date: Tuesday, January 7, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 3

* Change

* Remove duration by clearing duration field

* Expected result

* Finish date is also removed, start date is maintained as is:

* Start date: Tuesday, January 7, 2025

* Finish date: -

* Duration: -


<br>

#### Scenario 6a 🟢

* Setup

* Start date: Tuesday, January 7, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 3

* Change

* Remove duration by focusing duration field and clicking the &quot;x&quot;

* Expected result

* Finish date is also removed, start date is maintained as is:

* Start date: Tuesday, January 7, 2025

* Finish date: -

* Duration: -


<br>

#### Scenario 7 🟢

* Setup

* Start date: Monday, January 6, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 4

* Change

* User alters the start date to Tuesday, January 7, 2025

* Expected result

* Finish date is maintained, duration is automatically adjusted to 3 days (derived; logic = changing one date when the other is present affects duration vs. move the second date).

* \[open\] Challenge?

* 🟢 \[Chris\] Yes! I totally approve this scenario. I think that&#39;s the correct behavior. Before, it would have kept the duration and change the end date, which I always found counter-intuitive.


<br>

#### Scenario 8 🟢

* Setup

* Start date: Monday, January 6, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 4

* Change

* User alters the finish date to January 10, 2025

* Expected result

* Start date is unaffected, duration is now set to 5 days:

* Start date: Monday, January 6, 2025

* Finish date: Friday, January 10, 2025

* Duration: 5


<br>

#### Scenario 9 🟢

* Setup

* Start date: empty

* Finish date: empty

* Duration: 4

* Change

* User enters the finish date of Friday, January 10, 2025 (finish date in focus).

* Expected result

* The start date is set to Tuesday, January 7, 2025 (derived from duration):

* Start date: Tuesday, January 7, 2025

* Finish date: Friday, January 10, 2025

* Duration: 4


<br>

#### Scenario 10 🟢

* Setup

* Start date: empty

* Finish date: Thursday, January 9, 2025

* Duration: empty

* Change

* User enters the start date of Tuesday, January 7, 2025

* Expected result

* Duration is set to 3 (derived from start date):

* Start date: Tuesday, January 7, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 3


<br>

#### Scenario 13 🟢

* Setup

* Start date: Tuesday, January 7, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 3

* Change

* The user changes the start day on the date picker to Wednesday, February 15, 2025 (note that this is _after_ the original finish date)

* Expected result

* The start date is set to Wednesday, February 15

* The finish date is cleared

* Duration is cleared


<br>

#### Scenario 13a 🟢

* Setup

* Start date: Thursday, January 23, 2025

* Finish date: empty

* Duration: empty

* Today&#39;s date is Tuesday, January 21, 2025

* Change

* The user clicks the &quot;Today&quot; link under the Finish date field

* Expected result

* The finish date is set to Tuesday, February 21, 2021

* The start date is cleared

* Duration is cleared


<br>

#### Scenario 14 🟢

* Setup

* Start date: Tuesday, January 7, 2025

* Finish date: Thursday, January 9, 2025

* Duration: 3

* Change

* The user changes the start day on the date picker to Monday, January 6, 2025 (note that this is _before_ the original start date).

* Expected result

* The start date is now Monday, January 6, 2025

* The finish date is maintained at Thursday, January 9, 2025

* The duration changes to 4 days.

* (In previous version, the duration would be kept and finish date would be derived. This is no longer the case: we keep always keep dates and derive duration)


<br>

#### Scenario 15 🟢

* Setup

* Start date: Thursday, January 9, 2025

* Finish date: Tuesday, January 14, 2025

* Duration: 4

* Working days only: on

* Change

* Working days only: off

* Expected result

* Start date remains Thursday, January 9, 2025

* Finish date Begin of the insertionremains Tuesday,End of the insertion Begin of the deletion is changed to Sunday,End of the deletion January Begin of the insertion14,End of the insertion Begin of the deletion 12,End of the deletion 2025

* Duration Begin of the insertionchanges to 6 daysEnd of the insertion Begin of the deletion is conserved (4 days)End of the deletion


<br>

#### Scenario 16 🟢

* Setup

* Start date: Thursday, January 9, 2025

* Finish date: Begin of the insertionTuesday,End of the insertion Begin of the deletion Sunday,End of the deletion January Begin of the insertion14,End of the insertion Begin of the deletion 12,End of the deletion 2025

* Duration: Begin of the insertion6End of the insertion Begin of the deletion 4End of the deletion

* Working days only: off

* Change

* Working days only: on

* Expected result

* Start date remains Thursday, January 9, 2025

* Finish date Begin of the insertionremainsEnd of the insertion Begin of the deletion is changed toEnd of the deletion Tuesday, January 14, 2025

* Duration Begin of the insertionchanges to 4 daysEnd of the insertion Begin of the deletion is conserved (4 days)End of the deletion


<br>

#### Scenario 17 🟢

* Setup

* Start date: Saturday, January 11, 2025

* Finish date: Sunday, January 12, 2025

* Working days only: off

* Duration: 2

* Change

* Working days only: on

* Expected result

* Start date changes to Monday, January 13, 2025 Begin of the insertion(next working day after January 11)End of the insertion

* Finish date Begin of the insertionchangesEnd of the insertion Begin of the deletion is changedEnd of the deletion to Begin of the insertionMonday,End of the insertion Begin of the deletion Tuesday,End of the deletion January Begin of the insertion13,End of the insertion Begin of the deletion 14,End of the deletion 2025 Begin of the insertion(next working day after January 12)End of the insertion

* Duration Begin of the insertionchanges to 1 dayEnd of the insertion Begin of the deletion is conserved (2 days)End of the deletion


<br>

#### Scenario 18 🟢

* Setup

* Start date: Saturday, January 11, 2025

* Finish date: Tuesday, January 21, 2025

* Working days only: off

* Duration: 11 days

* Change

* Working days only: on

* Expected result

* Start date changes to Monday, January 13, 2025

* Finish date Begin of the insertionremains Tuesday,End of the insertion Begin of the deletion is changed to Monday,End of the deletion January Begin of the insertion21,End of the insertion Begin of the deletion 27,End of the deletion 2025

* Duration Begin of the insertionchanges to 7 daysEnd of the insertion Begin of the deletion is conserved (11 days)End of the deletion


<br>

#### Scenario 19 🟢&nbsp;

* Setup

* Start date: Saturday, January 11, 2025

* Finish date: -

* Working days only: off

* Duration: -

* Change

* Working days only: on

* Expected result

* Start date changes to Monday, January 13, 2025

* Finish date is still empty

* Duration is still empty

* Note

* if &quot;Working days only&quot; is switched off again, the start date _could_ go back to Saturday Jan 11, but this is not a requirement. Both behaviors are acceptable.


<br>

#### Scenario 20 🟢

* Setup

* Start date: -

* Finish date: Sunday, January 12, 2025

* Working days only: off

* Duration: -

* Change

* Working days only: on

* Expected result

* Start date is still empty

* Finish date is Monday, February 13, 2025

* Duration is still empty


<br>

#### Scenario 21a 🟢

* Setup

* Start date: Saturday, January 11, 2025

* Finish date: Sunday, January 12, 2025

* Working days only: off

* Duration: 2

* Change

* Clear start date

* Expected result

* Start date is removed

* Duration is removed

* Finish date is maintained at Sunday, January 12, 2025


<br>

#### Scenario 21b 🟢

* Setup

* Start date: Saturday, January 11, 2025

* Finish date: Sunday, January 12, 2025

* Working days only: off

* Duration: 2

* Change

* Finish date is cleared

* Expected result

* Start date is maintained at Saturday, January 11, 2025

* Finish date is removed

* Duration is removed


<br>

#### Scenario 22a 🟢

* Setup

* Start date: Thursday, January 9, 2025

* Finish date: -

* Duration: -

* Change

* With duration in focus, click on Wednesday, January 8, 2025

* Note: this is one day _earlier_ than the current start date

* Expected result

* Start date is updated to at Wednesday, January 8, 2025 (the clicked date)

* Finish date is set to Thursday, January 9, 2025 (the previous start date)

* Focus is set to finish date

* Duration is derived as 2 days


<br>

#### Scenario 22b 🟢

* Setup

* Start date: Thursday, January 9, 2025

* Finish date: -

* Duration: -

* Change

* With duration in focus, click on Friday, January 10, 2025

* Note: this is one day _after_ than the current start date

* Expected result

* Start date stays at Thursday, January 9, 2025

* Finish date is set to Friday, January 10, 2025

* Duration is derived as 2 days

* Focus is set to start date


<br>

#### Scenario 23a 🟢

* Setup

* Start date: empty

* Finish date: Thursday, January 9, 2025

* Duration: empty

* Change

* With duration in focus, click on Friday, January 10, 2025

* Expected result

* Start date is set to Thursday, January 9, 2025 (the previous finish date)

* Finish date is updated to Friday, January 10, 2025 (the clicked date)

* Duration is derived as 2 days

* Focus is set to start date


<br>

#### Scenario 23b 🟢

* Setup

* Start date: empty

* Finish date: Thursday, January 9, 2025

* Duration: empty

* Change

* With duration in focus, click on Wednesday, January 8, 2025

* Expected result

* Start date is set to Wednesday, January 8, 2025 (the clicked date)

* Finish date remains Thursday, January 9, 2025

* Duration is derived as 2 days

* Focus is set to finish date


#### Scenario 24a: Single date change (Start date) 🟢

* Setup

* Start date: Thursday, January 9, 2025

* Finish date: -

* Duration: -

* Change

* With start date in focus, click on Friday, January 10, 2025

* Expected result

* Start date is now Friday, January 10, 2025 (the clicked date)

* Finish date remains empty

* Duration remains empty

* Focus is moved to Finish date (range mode with new start date)


####

#### Scenario 24b: Single date change (Finish date) 🟢

* Setup

* Start date: -

* Finish date: Friday, January 10, 2025

* Duration: -

* Change

* With finish date in focus, click on Thu, Jan 16, 2025

* Expected result

* Finish date is now Thu, Jan 16, 2025 (the clicked date)

* Start date remains empty

* Duration remains empty

* Focus is moved to Start date (range mode with new finish date)


<br>