66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
package sudoku
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import (
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"crypto/sha1"
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"errors"
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"fmt"
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"testing"
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"git.kleiax.de/homepage/logic"
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"git.kleiax.de/homepage/logic/strategies"
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"git.kleiax.de/homepage/parser"
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)
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const solvedSudoku = "123456789456789123789123456234567891567891234891234567345678912678912345912345678"
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func puzzleBankRecord(digits string, rating float64) string {
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hash := fmt.Sprintf("%x", sha1.Sum([]byte(digits)))[:12]
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return fmt.Sprintf("%s %s %.1f", hash, digits, rating)
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}
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func TestNewSelectsExplicitPuzzleIndex(t *testing.T) {
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data := puzzleBankRecord("0"+solvedSudoku[1:], 1.0) + "\n" + puzzleBankRecord(solvedSudoku, 2.0)
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game, err := New(&parser.PuzzleBank{}, logic.Solver{}, []byte(data), 1)
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if err != nil {
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t.Fatalf("New() error = %v", err)
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}
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if game.GetField().GetRating() != 2 || !game.GetField().IsSolved() {
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t.Fatal("New() did not select puzzle index 1")
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}
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}
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func TestNewRejectsInvalidIndexAndInput(t *testing.T) {
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valid := puzzleBankRecord(solvedSudoku, 1.0)
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if _, err := New(&parser.PuzzleBank{}, logic.Solver{}, []byte(valid), 1); !errors.Is(err, parser.ErrFieldIndex) {
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t.Fatalf("index error = %v, want ErrFieldIndex", err)
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}
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if _, err := New(&parser.PuzzleString{}, logic.Solver{}, []byte("invalid"), 0); err == nil {
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t.Fatal("invalid input error = nil")
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}
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}
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func TestSolveCompletesSimplePuzzle(t *testing.T) {
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solver := logic.Solver{}
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solver.Add(&strategies.LastDigit{})
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game, err := New(&parser.PuzzleString{}, solver, []byte("0"+solvedSudoku[1:]), 0)
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if err != nil {
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t.Fatal(err)
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}
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if err := game.Solve(); err != nil {
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t.Fatalf("Solve() error = %v", err)
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}
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if !game.GetField().IsSolved() {
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t.Fatal("field is not solved")
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}
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}
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func TestSolveReportsNoProgress(t *testing.T) {
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game, err := New(&parser.PuzzleString{}, logic.Solver{}, []byte("0"+solvedSudoku[1:]), 0)
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if err != nil {
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t.Fatal(err)
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}
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if err := game.Solve(); !errors.Is(err, logic.ErrNoProgress) {
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t.Fatalf("Solve() error = %v, want ErrNoProgress", err)
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}
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}
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