Project Wizard Smoke Tests: R Project with Renv Environment

[sharon-wang]

Description

• Addresses the "R Project with Renv Environment" part of https://github.com/posit-dev/positron/issues/3879

Adds the following test cases for "R Project with Renv Environment":

• Accept Renv install: the user does not have renv installed, creates a new R Project with renv init selected and accepts to install it upon project creation
• Renv already installed: the user already has renv installed and creates a new R Project with renv init selected
• Cancel Renv install: the user does not have renv installed, creates a new R Project with renv init selected, but declines to install it upon project creation

Introduces the following:

• adds getPage() to PositronBaseElement, which can be used to insert keyboard text to the page
• adds getExplorerProjectFiles() to PositronExplorer, which returns the top-level list of file and directory names showing in the explorer

QA Notes

• Please fill in corresponding Test Ids :)

[testlabauto]

Ran in CI: Passing!

[jonvanausdeln]

These fail for me on Windows waiting for a response from the console:

[sharon-wang]

@jonvanausdeln I've added some handling to interact with the Console on Windows. I wonder if I'll also need to add a longer time for the expect().toPass() check for the renv-related files to show up, just in case the install takes a while?

[sharon-wang]

CI passed for the 4 tests introduced. Running full smoke test suite to confirm the latest changes are working.

Update: full smoke test suite looking good too 👍