1. Apply the patch attached to this ticket to perform the tests as per the steps below.
2. Log in as admin
3. Navigate to `WWW_ROOT/lib/tests/other/chartjstestpage.php`
4. Confirm that all charts loaded normally and no exceptions were thrown, as well as no warnings via developer tools.
5. Confirm that the second chart, "DOUGHNUT CHART", despite having the aspectRatio configured, as it has the maintainAspectRatio property set to false, the height of the graph will be controlled by CSS properties of the container it is in, thus not being affected by the aspectRatio;
6. Confirm that the third chart, "TENSIONED LINES CHART", is displayed in a rectangular shape. It has the height compressed and full width because the aspect ratio was set to 4. Also on that chart, confirm when resizing the screen, it has a short delay before resizing because the property resizeDelay was set to 2000 milliseconds (2 seconds);
7. Confirm that the fourth chart, "SMOOTH LINES CHART", is displayed correctly in a rectangular format because the aspectRatio property is set to 1 and the maintainAspectRatio property is set to true, so the control of the aspectRatio is in the property itself.
8. Confirm that the fifth chart, "BAR CHART", is displayed correctly but has a small size because the property responsive is set to false, so it's using the original size of the canvas and not being resized.

Code verified against automated checks.

Checked MDL-85158 using repository: https://github.com/pedrojordao/moodle.git

• main (0 errors / 0 warnings) [branch: MDL-85158 | CI Job]

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Launching automatic jobs for branch MDL-85158

• https://ci.moodle.org/view/Testing/job/DEV.02%20-%20Developer-requested%20PHPUnit/19101/ PHPUnit (sqlsrv)
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Built on: Tue Apr 22 16:25:34 UTC 2025