Mercurial > hg > terminal-chess / file diff

--- a/test/test-fen.c	Mon Sep 07 16:50:49 2026 +0200
+++ b/test/test-fen.c	Mon Sep 07 17:01:21 2026 +0200
@@ -191,6 +191,60 @@
     gamestate_cleanup(&gs);
 }
 
+static CX_TEST(test_fen_stalemate) {
+    const char * fen = "8/8/kBK5/P7/8/8/8/8 b - - 6 57";
+    GameState gs;
+    int result = fen_parse(fen, &gs);
+    CX_TEST_DO {
+        CX_TEST_ASSERT(result == 0);
+        CX_TEST_ASSERT(strcmp(gs.fen_start, fen) == 0);
+        CX_TEST_ASSERT(gs.fifty_cntr_start == 6);
+        CX_TEST_ASSERT(gs.move_start == 113);
+        CX_TEST_ASSERT(current_color(&gs) == BLACK);
+        CX_TEST_ASSERT(gs.stalemate);
+        CX_TEST_ASSERT(!gs.threefold);
+        CX_TEST_ASSERT(!gs.nomaterial);
+        CX_TEST_ASSERT(!gs.remis);
+        CX_TEST_ASSERT(!gs.wresign);
+        CX_TEST_ASSERT(!gs.bresign);
+        CX_TEST_ASSERT(!gs.ragequit);
+        CX_TEST_ASSERT(!gs.review);
+        CX_TEST_ASSERT(!gs.checkmate);
+        /* check that we get the original FEN back */
+        char fen_chk[FEN_MAX_LENGTH];
+        fen_compute(fen_chk, &gs);
+        CX_TEST_ASSERTM(strcmp(fen, fen_chk) == 0, fen_chk);
+    }
+    gamestate_cleanup(&gs);
+}
+
+static CX_TEST(test_fen_nomaterial) {
+    const char * fen = "8/5K1k/8/8/8/8/8/8 w - - 0 77";
+    GameState gs;
+    int result = fen_parse(fen, &gs);
+    CX_TEST_DO {
+        CX_TEST_ASSERT(result == 0);
+        CX_TEST_ASSERT(strcmp(gs.fen_start, fen) == 0);
+        CX_TEST_ASSERT(gs.fifty_cntr_start == 0);
+        CX_TEST_ASSERT(gs.move_start == 152);
+        CX_TEST_ASSERT(current_color(&gs) == WHITE);
+        CX_TEST_ASSERT(!gs.stalemate);
+        CX_TEST_ASSERT(!gs.threefold);
+        CX_TEST_ASSERT(gs.nomaterial);
+        CX_TEST_ASSERT(!gs.remis);
+        CX_TEST_ASSERT(!gs.wresign);
+        CX_TEST_ASSERT(!gs.bresign);
+        CX_TEST_ASSERT(!gs.ragequit);
+        CX_TEST_ASSERT(!gs.review);
+        CX_TEST_ASSERT(!gs.checkmate);
+        /* check that we get the original FEN back */
+        char fen_chk[FEN_MAX_LENGTH];
+        fen_compute(fen_chk, &gs);
+        CX_TEST_ASSERTM(strcmp(fen, fen_chk) == 0, fen_chk);
+    }
+    gamestate_cleanup(&gs);
+}
+
 static CX_TEST(test_fen_enpassant) {
     /* this test contains a full game where white is checkmated */
     const char * fen = "rnQ4r/pp4kp/3p2pn/1BpPp1N1/5P2/2BK4/P1P3qP/8 w - e6 0 19";
@@ -223,7 +277,8 @@
     cx_test_register(suite, test_fen_basic);
     cx_test_register(suite, test_fen_with_castling_rights);
     cx_test_register(suite, test_fen_checkmate);
-    // TODO: test FENs that describe stalemate, threefold, no-material positions
+    cx_test_register(suite, test_fen_stalemate);
+    cx_test_register(suite, test_fen_nomaterial);
     cx_test_register(suite, test_fen_enpassant);
 
     return suite;