error: expected integer literal
 --> tests/ui/invalid_case_count.rs:3:15
  |
3 | #[test_casing("2", ["test", "this"])]
  |               ^^^

error: number of test cases must be positive
 --> tests/ui/invalid_case_count.rs:8:15
  |
8 | #[test_casing(0, [])]
  |               ^