- Test the default state: Verify that the dropdown is in its default state when the page loads. This includes checking that the dropdown is closed, and that the default option is displayed.
- Test dropdown options: Verify that all dropdown options are present and correctly labeled. Ensure that each option is selectable, and that selecting an option updates the dropdown selection.
- Test selection validation: Verify that the dropdown selection is validated as required, i.e., a user must select an option before proceeding to the next step. Test this by trying to submit the form without selecting an option from the dropdown.
- Test data binding: Verify that the selected dropdown option is correctly bound to any data that is submitted or stored. Check that the correct option is displayed when the data is retrieved.
- Test dropdown placement: Test the placement of the dropdown on different screen sizes and devices. Verify that it appears in the correct position and is fully visible.
- Test dropdown behavior: Verify that the dropdown behaves correctly when opened and closed. Check that it opens and closes smoothly and without delay. Test that it closes when a user clicks outside the dropdown or selects an option.
- Test keyboard accessibility: Verify that the dropdown is accessible using the keyboard. Test that users can navigate through the options using the arrow keys and select an option using the Enter key.
- Test styling and formatting: Test that the dropdown is styled and formatted consistently with the rest of the page. Check that the font size, color, and alignment are consistent with the overall design.
- Test dropdown performance: Test the performance of the dropdown, particularly if it contains a large number of options. Check that it loads quickly, and that selecting an option does not cause a delay or freeze.
- Test dropdown compatibility: Test the dropdown in different browsers and operating systems to ensure that it works correctly across all platforms. Verify that it is compatible with assistive technology such as screen readers.