QA:Testcase partitioning webui guided delete all

Associated release criterion
This test case is associated with the Basic_Release_Criteria#disk-layouts release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.

Description

This test case tests whether the webui-based installer can successfully remove all existing storage volumes and automatically partition in the freed-up space using the guided partitioning path.

Setup

1. Prepare a test system with a working, supported storage device of sufficient size for a Fedora install, and a Fedora installation medium that uses the webui-based installer - e.g. Fedora Workstation live, on Fedora 42 and above.
2. Ensure the target device contains multiple storage volumes, ideally an existing OS installation, consuming sufficient space that a Fedora installation would not be possible without removing them.

How to test

1. Boot the webui-based installer using any available means, e.g. Fedora Workstation live on Fedora 42+.
2. Proceed to the installer's "Installation method" screen, making sensible choices.
3. Ensure only the single target device you prepared is shown under "Destination".
4. Ensure the "Use entire disk" radio button is selected, and click Next.
5. Complete the installation process, making sensible selections for all other installer options.
6. Boot the installed system.

Expected Results

1. All pre-existing storage volumes on the target disk should be deleted.
2. The expected partition layout should be created on the target device(s).
3. The install process should complete successfully and the installed system should boot as expected.