| Tests for setting a negative tabindex on shadow host. Elements inside such a shadow tree should not be in the sequential navigation order. |
| To manually test, press tab key four times. It should traverse focusable elements in the increasing numerical order. |
| |
| 1. First sequentially focusable element |
| 2. An iframe without a focusable element |
| 3. First focusable element inside an iframe |
| 4. Second focusable element inside an iframe |
| 5. An iframe without a focusable shadow host or shadow content |
| 6. Focusable content inside a shadow tree |
| 7. A focusable element with a high tabindex |
| 8. Focusable content inside the first shadow tree |
| 9. Focusable content inside the second shadow tree |
| 8. Focusable content inside the first shadow tree |
| 7. A focusable element with a high tabindex |
| 6. Focusable content inside a shadow tree |
| 5. An iframe without a focusable shadow host or shadow content |
| 4. Second focusable element inside an iframe |
| 3. First focusable element inside an iframe |
| 2. An iframe without a focusable element |
| 1. First sequentially focusable element |
| |
