generate queen-attack tests

[keiravillekode]

No description provided.

[github-actions]

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[keiravillekode]

Previously, something like

let create (row: i32) (column: i32): Queen =
  assert (row >= 0 && row <= 7 && column >= 0 && column <= 7) { row=column, column=row }

would pass the test as we were not requiring the test_create return value be true.