Ilia Denisov
256999b42c
- Rename module to gitea.iliadenisov.ru/developer/scrabble-solver so it can be consumed as a versioned dependency (no go.work replace / CI clone). - De-internalize wordlist and dictdawg as public packages. - Remove cmd/builddict, dictprep/, the dictionaries submodule and the dawg Makefile: the word-list parsing and DAWG build now live in the separate scrabble-dictionary repository, which publishes the DAWG set as a release artifact. - internal/dict loads the committed dawg/en_sowpods.dawg fixture for cmd/stress. - Update README/CLAUDE docs accordingly.
122 lines
3.4 KiB
Go
122 lines
3.4 KiB
Go
package scrabble
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import (
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"testing"
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"github.com/iliadenisov/alphabet"
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"gitea.iliadenisov.ru/developer/scrabble-solver/board"
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"gitea.iliadenisov.ru/developer/scrabble-solver/dictdawg"
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"gitea.iliadenisov.ru/developer/scrabble-solver/internal/encoding"
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"gitea.iliadenisov.ru/developer/scrabble-solver/rack"
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"gitea.iliadenisov.ru/developer/scrabble-solver/rules"
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"gitea.iliadenisov.ru/developer/scrabble-solver/wordlist"
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)
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func makeRack(letters string, blanks int) rack.Rack {
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r := rack.New(26)
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for i := range len(letters) {
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r.Add(letters[i] - 'a')
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}
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for range blanks {
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r.AddBlank()
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}
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return r
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}
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func placeWord(b *board.Board, r, c int, dir Direction, word string) {
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for i := range len(word) {
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rr, cc := r, c+i
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if dir == Vertical {
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rr, cc = r+i, c
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}
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b.Set(rr, cc, encoding.Cell(word[i]-'a', false))
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}
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}
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func genMoves(moves []Move) map[string]Move {
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out := make(map[string]Move, len(moves))
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for _, m := range moves {
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out[moveKey(m.Dir, m.Tiles)] = m
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}
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return out
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}
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// testWords is a small lexicon with enough overlaps to form across and cross plays.
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var testWords = []string{
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"aa", "ace", "act", "arc", "are", "art", "as", "at", "ate",
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"cab", "cap", "car", "care", "cars", "cart", "cat", "cats", "cot",
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"oat", "oats", "ta", "tar", "tare", "tat", "tea", "teat",
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}
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func compareToBrute(t *testing.T, name string, gen Generator, b *board.Board, d dict, rk rack.Rack, mode Mode) {
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t.Helper()
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want := bruteForce(b, plainRulesShared, d, rk, mode)
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got := genMoves(gen.GenerateMoves(b, rk, mode))
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for k, wm := range want {
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gm, ok := got[k]
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if !ok {
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t.Errorf("%s [%s]: %s missing %s (score %d)", name, gen.Name(), gen.Name(), k, wm.Score)
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continue
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}
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if gm.Score != wm.Score {
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t.Errorf("%s [%s]: %s score %d, want %d", name, gen.Name(), k, gm.Score, wm.Score)
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}
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}
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for k := range got {
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if _, ok := want[k]; !ok {
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t.Errorf("%s [%s]: extra move %s", name, gen.Name(), k)
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}
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}
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if len(got) != len(want) {
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t.Errorf("%s [%s]: %d moves, oracle has %d", name, gen.Name(), len(got), len(want))
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}
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}
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func mustPlainRules() *rules.Ruleset {
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eng := rules.English()
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rs, err := rules.FromTemplate("plain7", eng.Alphabet, eng.Values, eng.Counts, 2, 7, 50, plain7)
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if err != nil {
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panic(err)
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}
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return rs
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}
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var plainRulesShared = mustPlainRules()
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type scenario struct {
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name string
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setup func(*board.Board)
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rack rack.Rack
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mode Mode
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}
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func genScenarios() []scenario {
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return []scenario{
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{"first move", func(*board.Board) {}, makeRack("cat", 0), Both},
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{"first move blank", func(*board.Board) {}, makeRack("ca", 1), Both},
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{"extend cat", func(b *board.Board) { placeWord(b, 3, 1, Horizontal, "cat") }, makeRack("srs", 0), Both},
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{"cross cat", func(b *board.Board) { placeWord(b, 1, 3, Horizontal, "cat") }, makeRack("aort", 0), Both},
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{"only horizontal", func(b *board.Board) { placeWord(b, 3, 1, Horizontal, "cat") }, makeRack("aser", 0), OnlyHorizontal},
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{"only vertical", func(b *board.Board) { placeWord(b, 1, 3, Vertical, "cat") }, makeRack("aser", 0), OnlyVertical},
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}
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}
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func TestDAWGGeneratorVsBruteForce(t *testing.T) {
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rs := plainRulesShared
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words := wordlist.Encode(testWords, alphabet.Latin(), 2, 15)
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f, err := dictdawg.Build(alphabet.Latin(), words)
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if err != nil {
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t.Fatal(err)
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}
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gen := NewDAWGGenerator(rs, f)
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d := makeDict(words)
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for _, c := range genScenarios() {
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b := board.New(rs.Rows, rs.Cols)
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c.setup(b)
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compareToBrute(t, c.name, gen, b, d, c.rack, c.mode)
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}
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}
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