Cover by PHPUnit. Manual testing as below

Initial setup

1. Run

   docker run -d -p 5000:5000 --name=mlbackendpython --rm --add-host=mlbackendpython:0.0.0.0 moodlehq/moodle-mlbackend-python:3.0.5-python3.7.5

1. Log in as an admin and go to Site administration > Plugins > Machine Learning backend settings > Python machine learning backend.
2. Tick 'Use a server', set 'Host' to 'mlbackendpython', 'localhost' or '127.0.0.1', the field 'Port' to 5000 and the field 'Password' to 'sshhhh' and save changes.

Test 1

1. Checkout to the previous weekly release.
2. Install the Moodle instance.
3. Log in as admin
4. Go to Site admin -> Analytics -> Analytics models
5. Create a new model that explicitly uses the 'PHP machine learning backend'
6. Inspect the database table called 'analytics_models' and ensure you have an entry in there with '\mlbackend_php\processor' set as the 'predictionsprocessor'
7. Checkout the latest main branch and perform the upgrade
8. CONFIRM that mlbackend_php is removed in the upgrade process
9. Inspect the 'analytics_models' table again
10. CONFIRM there are no entries with '\mlbackend_php\processor'
11. Go to Site admin -> Advanced features
12. CONFIRM that 'Analytics' is disabled

Test 2 (upgrade with mlbackend_php present)

1. Checkout to the previous weekly release.
2. Install the Moodle instance.
3. Checkout to the latest main branch.
4. Start the upgrade process, but pause when you see the 'Plugin check' screen. It will warn you about mlbackend_php being missing from the disk.
5. In your Moodle root, clone the mlbackened_php repo

   git clone https://github.com/moodlehq/moodle-mlbackend_php.git lib/mlbackend/php

6. Go back to the 'Plugin check' screen and continue upgrading Moodle.
7. Go to Site admin -> Advanced features
8. CONFIRM that Analytics is still enabled
9. Go to Site admin -> Analytics -> Analytics models
10.  CONFIRM that 'PHP machine learning backend' is selected for 'Default predictions processor'

Code verified against automated checks.

Checked MDL-84107 using repository: https://github.com/davewoloszyn/moodle.git

• main (0 errors / 0 warnings) [branch: MDL-84107-main | CI Job]

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Built on: Thu Feb 13 05:26:14 AM UTC 2025

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Built on: Mon Feb 10 04:30:16 AM UTC 2025