Add unit tests for Room Creation

[estellecomment]

Reuse the test setup that element has, and write a new unit test for TchapCreateRoomDialog.

Sprint goal : #46

[odelcroi]

I see multiple tests requirements for this use case :

• non react component : I've created a separate file for the room creation function, it allows to unit-test easily (no react context needed, pure ts).

• react component events and renders : test component state update based on user input

• test view rendering (html..) with snapshots (todo)

• end to end tests including in matrix-react-sdk

#52

[odelcroi]

In order to run the UT properly we need to "yarn link" the matrix-react-sdk-v4, I managed to do it locally like this
⚠️ Beware to unlink previous version of matrix-react-sdk before ⚠️

• checkout project matrix-react-sdk-v4, tag element-v3.42.0
• yarn link

I set in package.json :
"matrix-react-sdk": "github:tchapgouv/matrix-react-sdk-v4#ac3a907",

• yarn link matrix-react-sdk
• yarn test

Before to make any more commit or branch I'd like to discuss with you if this approach seems the right path

[odelcroi]

Though, I am not able to run the tests within the folder /node_modules/matrix-react-sdk/test/..

It does not seem trivial : jestjs/jest#11084 -> it should be allowed in jest 28 (now using jest 26)

[estellecomment]

Adding "blocked" : we should not invest in testing this until we have decided it's our final solution. (we could do design work to see if it would be possible to reuse element's creation dialogs.)

[jdauphant]

Lié à https://github.com/tchapgouv/tchap-design/issues/90

[estellecomment]

@jdauphant du coup on peut enlever le "blocked" ?

[jdauphant]

Oui

[estellecomment]

@odelcroi : Discussing this with @mcalinghee : we already have unit tests which verify that the rooms are valid tchap-types.
Next, we need to avoid regressions when we catch up with element.
So what we need is end-to-end tests on this.
Closing this ticket in favor of #117