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test/examples/sudoku_test.exs

defmodule CPSolverTest.Examples.Sudoku do
use ExUnit.Case, async: false
alias CPSolver.Examples.Sudoku
test "4x4" do
test_sudoku(Sudoku.puzzles().s4x4, 2, trials: 10, timeout: 100)
end
test "9x9 singe solution 1" do
test_sudoku(Sudoku.puzzles().s9x9_1, 1, timeout: 2000)
end
test "9x9 singe solution 2" do
test_sudoku(Sudoku.puzzles().hard9x9, 1)
end
test "9x9 multiple solutions" do
test_sudoku(Sudoku.puzzles().s9x9_5, 5, timeout: 2000)
end
defp test_sudoku(puzzle_instance, expected_solutions, opts \\ []) do
opts =
Keyword.merge([timeout: 500, trials: 1], opts)
Enum.each(1..opts[:trials], fn _i ->
{:ok, result} = CPSolver.solve_sync(Sudoku.model(puzzle_instance), timeout: opts[:timeout])
Enum.each(result.solutions, &assert_solution/1)
solution_count = result.statistics.solution_count
assert solution_count == expected_solutions
end)
end
defp assert_solution(solution) do
assert Sudoku.check_solution(solution), "Wrong solution!"
end
end