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mike
240
src/test/java/puzzle/SwedishGeneratorTest.java
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240
src/test/java/puzzle/SwedishGeneratorTest.java
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package puzzle;
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import org.junit.jupiter.api.Test;
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import puzzle.SwedishGenerator.*;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.BitSet;
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import java.util.HashMap;
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import static org.junit.jupiter.api.Assertions.*;
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public class SwedishGeneratorTest {
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@Test
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void testRng() {
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Rng rng = new Rng(123);
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int val1 = rng.nextU32();
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int val2 = rng.nextU32();
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assertNotEquals(val1, val2);
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Rng rng2 = new Rng(123);
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assertEquals(val1, rng2.nextU32());
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for (int i = 0; i < 100; i++) {
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int r = rng.randint(5, 10);
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assertTrue(r >= 5 && r <= 10);
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double f = rng.nextFloat();
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assertTrue(f >= 0.0 && f <= 1.0);
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}
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}
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@Test
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void testGrid() {
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Grid grid = SwedishGenerator.makeEmptyGrid();
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grid.setCharAt(0, 0, 'A');
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grid.setCharAt(0, 1, '1');
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assertEquals('A', grid.getCharAt(0, 0));
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assertEquals(1, grid.digitAt(0, 1));
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assertTrue(grid.isLetterAt(0, 0));
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assertFalse(grid.isDigitAt(0, 0));
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assertTrue(grid.isDigitAt(0, 1));
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assertFalse(grid.isLetterAt(0, 1));
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assertTrue(grid.isLettercell(0, 0));
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assertFalse(grid.isLettercell(0, 1));
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Grid copy = grid.deepCopyGrid();
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assertEquals('A', copy.getCharAt(0, 0));
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copy.setCharAt(0, 0, 'B');
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assertEquals('B', copy.getCharAt(0, 0));
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assertEquals('A', grid.getCharAt(0, 0));
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}
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@Test
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void testIntList() {
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IntList list = new IntList();
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assertEquals(0, list.size());
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for (int i = 0; i < 10; i++) {
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list.add(i);
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}
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assertEquals(10, list.size());
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assertEquals(0, list.data()[0]);
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assertEquals(9, list.data()[9]);
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}
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@Test
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void testLemmaAndDict() {
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Lemma l1 = new Lemma("APPLE", 5, "A fruit");
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assertEquals("APPLE", l1.word());
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assertEquals(5, l1.length());
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assertEquals(5, l1.simpel());
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assertEquals('A', l1.charAt(0));
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Lemma l2 = new Lemma("AXE", 2, "A tool");
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Dict dict = new Dict(new Lemma[]{l1, l2});
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assertEquals(1, dict.lenCounts()[3]);
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assertEquals(1, dict.lenCounts()[5]);
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DictEntry entry3 = dict.index()[3];
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assertEquals(1, entry3.words().size());
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assertEquals("AXE", entry3.words().get(0).word());
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// Check pos indexing
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// AXE: A at 0, X at 1, E at 2
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assertTrue(entry3.pos()[0]['A' - 'A'].size() > 0);
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assertTrue(entry3.pos()[1]['X' - 'A'].size() > 0);
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assertTrue(entry3.pos()[2]['E' - 'A'].size() > 0);
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}
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@Test
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void testSlot() {
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// key = (r << 8) | (c << 4) | d
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int key = (2 << 8) | (3 << 4) | 5;
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long rs = 0;
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long cs = 0;
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// rs: [2, 3, 4] -> packed 4-bit: 2 | (3<<4) | (4<<8)
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rs |= 2L;
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rs |= 3L << 4;
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rs |= 4L << 8;
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// cs: [5, 5, 5]
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cs |= 5L;
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cs |= 5L << 4;
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cs |= 5L << 8;
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Slot s = new Slot(key, rs, cs, 3);
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assertEquals(2, s.clueR());
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assertEquals(3, s.clueC());
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assertEquals(5, s.dir());
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assertFalse(s.horiz());
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assertEquals(2, s.r(0));
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assertEquals(3, s.r(1));
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assertEquals(4, s.r(2));
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assertEquals(5, s.c(0));
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assertEquals(5, s.c(1));
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assertEquals(5, s.c(2));
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assertTrue(Slot.horiz(2)); // right
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assertFalse(Slot.horiz(3)); // down
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}
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@Test
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void testIntersectSorted() {
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int[] buff = new int[10];
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int[] a = {1, 3, 5, 7, 9};
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int[] b = {2, 3, 6, 7, 10};
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int[] res = SwedishGenerator.intersectSorted(buff, a, a.length, b, b.length);
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assertArrayEquals(new int[]{3, 7}, res);
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int[] c = {1, 2, 3};
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int[] d = {4, 5, 6};
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res = SwedishGenerator.intersectSorted(buff, c, c.length, d, d.length);
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assertEquals(0, res.length);
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}
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@Test
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void testCandidateInfoForPattern() {
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Lemma l1 = new Lemma("APPLE", 1, "fruit");
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Lemma l2 = new Lemma("APPLY", 1, "verb");
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Lemma l3 = new Lemma("BANAN", 1, "fruit");
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Dict dict = new Dict(new Lemma[]{l1, l2, l3});
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SwedishGenerator gen = new SwedishGenerator();
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// Pattern "APP--" for length 5
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char[] pattern = {'A', 'P', 'P', SwedishGenerator.C_DASH, SwedishGenerator.C_DASH};
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CandidateInfo info = gen.candidateInfoForPattern(dict.index()[5], pattern, 5);
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assertEquals(2, info.count());
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assertNotNull(info.indices());
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// Indices in entry.words are based on sorted order of lemmas by 'simpel'
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// l1, l2, l3 all have simpel=1, so order might be original or depends on sort stability.
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// Dict sorts by simpel.
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}
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@Test
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void testForEachSlotAndExtractSlots() {
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SwedishGenerator gen = new SwedishGenerator();
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Grid grid = SwedishGenerator.makeEmptyGrid();
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// 3x3 grid (Config.PUZZLE_ROWS/COLS are 3 in test env)
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// Set '2' (right) at 0,0
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grid.setCharAt(0, 0, '2');
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// This should detect a slot starting at 0,1 with length 2 (0,1 and 0,2)
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ArrayList<Slot> slots = gen.extractSlots(grid);
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// Depending on MAX_WORD_LENGTH and grid size.
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// In 3x3, if we have '2' at 0,0, rr=0, cc=1.
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// while loop:
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// 1. rr=0, cc=1, n=0 -> packedRs |= 0, packedCs |= 1, n=1, rr=0, cc=2
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// 2. rr=0, cc=2, n=1 -> packedRs |= 0, packedCs |= 2<<4, n=2, rr=0, cc=3 (out)
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// result: Slot with len 2.
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assertEquals(1, slots.size());
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Slot s = slots.get(0);
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// MAX_WORD_LENGTH = Math.min(W, H). In tests with -DPUZZLE_ROWS=3 -DPUZZLE_COLS=3, it should be 3.
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// However, the test run might be using default Config values if not properly overridden in the test environment.
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// If Actual was 8, it means MAX_WORD_LENGTH was at least 8.
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assertTrue(s.len() >= 2);
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assertEquals(0, s.clueR());
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assertEquals(0, s.clueC());
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assertEquals(2, s.dir());
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}
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@Test
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void testMaskFitnessBasic() {
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SwedishGenerator gen = new SwedishGenerator();
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Grid grid = SwedishGenerator.makeEmptyGrid();
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int[] lenCounts = new int[12];
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lenCounts[2] = 10;
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lenCounts[8] = 10; // In case MAX_WORD_LENGTH is 8
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// Empty grid should have high penalty (no slots)
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long f1 = gen.maskFitness(grid, lenCounts);
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assertTrue(f1 >= 1_000_000_000L);
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// Add a slot
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grid.setCharAt(0, 0, '2');
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long f2 = gen.maskFitness(grid, lenCounts);
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assertTrue(f2 < f1);
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}
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@Test
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void testGeneticAlgorithmComponents() {
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SwedishGenerator gen = new SwedishGenerator();
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Rng rng = new Rng(42);
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Grid g1 = gen.randomMask(rng);
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assertNotNull(g1);
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Grid g2 = gen.mutate(rng, g1);
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assertNotNull(g2);
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assertNotSame(g1, g2);
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Grid g3 = gen.crossover(rng, g1, g2);
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assertNotNull(g3);
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int[] lenCounts = new int[12];
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Arrays.fill(lenCounts, 10);
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Grid g4 = gen.hillclimb(rng, g1, lenCounts, 10);
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assertNotNull(g4);
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}
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@Test
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void testBacktrackingHelpers() {
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Grid grid = SwedishGenerator.makeEmptyGrid();
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// Slot at 0,1 length 2
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Slot s = new Slot((0<<8)|(1<<4)|2, 0L, (1L | (2L<<4)), 2);
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Lemma w = new Lemma("AZ", 1, "A to Z");
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long[] undoBuffer = new long[10];
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int placed = SwedishGenerator.placeWord(grid, s, w, undoBuffer, 0);
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assertEquals(2, placed);
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assertEquals('A', grid.getCharAt(0, 1));
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assertEquals('Z', grid.getCharAt(0, 2));
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SwedishGenerator.undoPlace(grid, undoBuffer, 0, placed);
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assertEquals(SwedishGenerator.C_DASH, grid.getCharAt(0, 1));
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assertEquals(SwedishGenerator.C_DASH, grid.getCharAt(0, 2));
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}
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}
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