Test the Important Edge Cases

A feature can work in the happy path and still fail on small details. Test the cases most relevant to this project.

Form cases

• Submit without a title.
• Leave the description empty.
• Leave the date empty.
• Change the priority and status before saving.
• Open and close the modal without saving.

The UI should remain usable and the task list should not receive an incomplete task unexpectedly.

Drag-and-drop cases

• Drag a task into a different column.
• Move it back.
• Drag over a column and leave without dropping.
• Drop into the same column.

The drop highlight should not remain stuck after the drag leaves or the drop completes.

Persistence cases

• Add a task, refresh, and check it.
• Delete a task, refresh, and check it.
• Move a task, refresh, and check its status.

Checkpoint

Open the browser console while testing. There should be no React errors, and the board should recover cleanly from each interaction.