From 3fd43cd5fcb22bb65bf2a92a25d95d801b11c9e0 Mon Sep 17 00:00:00 2001
From: Scott Gasch <scott.gasch@gmail.com>
Date: Wed, 1 Jun 2016 18:58:58 -0700
Subject: Initial checkin for typhoon chess engine.

---
 src/testgenerate.c | 243 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 243 insertions(+)
 create mode 100755 src/testgenerate.c

(limited to 'src/testgenerate.c')

diff --git a/src/testgenerate.c b/src/testgenerate.c
new file mode 100755
index 0000000..d789fed
--- /dev/null
+++ b/src/testgenerate.c
@@ -0,0 +1,243 @@
+/**
+
+Copyright (c) Scott Gasch
+
+Module Name:
+
+    testgenerate.c
+
+Abstract:
+
+    Test the move generator.
+
+Author:
+
+    Scott Gasch (scott.gasch@gmail.com) 12 May 2004
+
+Revision History:
+
+    $Id: testgenerate.c 345 2007-12-02 22:56:42Z scott $
+
+**/
+
+#ifdef TEST
+#include "chess.h"
+
+UINT64 g_uPlyTestLeafNodeCount = 0;
+UINT64 g_uPlyTestTotalNodeCount = 0;
+
+extern CHAR *GenerateRandomLegalFenString();
+
+void 
+PlyTest(SEARCHER_THREAD_CONTEXT *ctx,
+        ULONG uDepth,
+        FLAG fInCheck)
+{
+    ULONG u;
+    MOVE mv;
+    ULONG uPly = ctx->uPly;
+    ULONG uLegalMoves = 0;
+    FLAG fGivesCheck;
+#if DEBUG
+    POSITION board;
+    memcpy(&board, &(ctx->sPosition), sizeof(POSITION));
+#endif
+    
+    if (uDepth > MAX_PLY_PER_SEARCH) 
+    {
+        return;
+    }
+    else if (uDepth == 0)
+    {
+        g_uPlyTestTotalNodeCount++;
+        g_uPlyTestLeafNodeCount++;
+        return;
+    }
+    g_uPlyTestTotalNodeCount++;
+
+    mv.uMove = 0;
+    GenerateMoves(ctx, mv, (fInCheck ? GENERATE_ESCAPES : GENERATE_ALL_MOVES));
+    for (u = ctx->sMoveStack.uBegin[uPly];
+         u < ctx->sMoveStack.uEnd[uPly];
+         u++)
+    {
+        mv = ctx->sMoveStack.mvf[u].mv;
+        mv.bvFlags |= WouldGiveCheck(ctx, mv);
+        
+        if (MakeMove(ctx, mv))
+        {
+            uLegalMoves++;
+            ASSERT(!InCheck(&ctx->sPosition, GET_COLOR(mv.pMoved)));
+            fGivesCheck = IS_CHECKING_MOVE(mv);
+#ifdef DEBUG
+            if (fGivesCheck)
+            {
+                ASSERT(InCheck(&ctx->sPosition, FLIP(GET_COLOR(mv.pMoved))));
+            }
+            else
+            {
+                ASSERT(!InCheck(&ctx->sPosition, FLIP(GET_COLOR(mv.pMoved))));
+            }
+#endif
+            PlyTest(ctx, uDepth - 1, fGivesCheck);
+            UnmakeMove(ctx, mv);
+            ASSERT(PositionsAreEquivalent(&board, &ctx->sPosition));
+        }
+    }
+}
+
+
+void 
+TestMoveGenerator(void)
+{
+    typedef struct _TEST_MOVEGEN
+    {
+        char *szFen;
+        UINT64 uLeaves[7];
+    }
+    TEST_MOVEGEN;
+    
+    TEST_MOVEGEN x[] = 
+    {
+     {
+      "3Q4/1Q4Q1/4Q3/2Q4R/Q4Q2/3Q4/1Q4Rp/1K1BBNNk w - - 0 1",
+      { 218, 0, 0, 0, 0, 0, 0 }
+     },
+     {
+      "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - - 0 0",
+      { 48, 2039, 97862, 4085603, 193690690ULL, 8031647685ULL }
+     },
+     {
+      "8/PPP4k/8/8/8/8/4Kppp/8 w - - 0 0",
+      { 18, 290, 5044, 89363, 1745545, 34336777ULL, 749660761ULL }
+     },
+     { 
+      "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 0",
+      { 14, 191, 2812, 43238, 674624, 11030083ULL, 78633661ULL }
+     },
+     {
+      "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w - - 0 0",
+      { 20, 400, 8902, 197281, 4865609, 119060324ULL, 3195901860ULL }
+     },
+    };
+    ULONG u, v;
+    
+    SEARCHER_THREAD_CONTEXT *ctx;
+    POSITION pos;
+
+    Trace("Testing move generator...\n");
+    ctx = SystemAllocateMemory(sizeof(SEARCHER_THREAD_CONTEXT));
+    ASSERT(ctx);
+    for (u = 0; u < ARRAY_LENGTH(x); u++)
+    {
+        if (FALSE == FenToPosition(&pos, x[u].szFen)) 
+        {
+            UtilPanic(INCONSISTENT_STATE,
+                      NULL, NULL, NULL, NULL,
+                      __FILE__, __LINE__);
+        }
+        InitializeSearcherContext(&pos, ctx);
+
+        for (v = 1; v <= 4; v++)
+        {
+            g_uPlyTestLeafNodeCount = 0;
+            g_uPlyTestTotalNodeCount = 0;
+            PlyTest(ctx, v, FALSE);
+            
+            if ((x[u].uLeaves[v-1]) &&
+                (g_uPlyTestLeafNodeCount != x[u].uLeaves[v-1]))
+            {
+                UtilPanic(TESTCASE_FAILURE,
+                          NULL, "Perft", NULL, NULL,
+                          __FILE__, __LINE__);
+            }
+        }
+    }
+    SystemFreeMemory(ctx);
+}
+
+
+void
+TestLegalMoveGenerator(void)
+{
+    ULONG u, v;
+    CHAR *p;
+    POSITION pos;
+    SEARCHER_THREAD_CONTEXT *ctx;
+    MOVE mv;
+    ULONG uLegalKingMoves;
+    ULONG uTotalLegalMoves;
+    ULONG uGen;
+
+    Trace("Testing legal move generator...\n");
+    ctx = SystemAllocateMemory(sizeof(SEARCHER_THREAD_CONTEXT));
+    ASSERT(ctx);
+    u = 0;
+    do
+    {
+        switch(rand() % 10) 
+        {
+            case 0:
+                p = "8/2K1p2k/1Q2B1p1/2N5/q4q2/3p2Pp/7P/8 w  - - 2 0";
+                break;
+            default:
+                p = GenerateRandomLegalFenString();
+                break;
+        }
+
+        if (FALSE == FenToPosition(&pos, p))
+        {
+            UtilPanic(TESTCASE_FAILURE,
+                      NULL, "FenToPosition", NULL, NULL,
+                      __FILE__, __LINE__);
+        }
+        
+        if (FALSE == IsBoardLegal(&pos))
+        {
+            continue;
+        }
+
+        if (TRUE == InCheck(&pos, pos.uToMove))
+        {
+            uLegalKingMoves = uTotalLegalMoves = 0;
+            InitializeSearcherContext(&pos, ctx);
+            
+            mv.uMove = 0;
+            GenerateMoves(ctx, mv, GENERATE_ESCAPES);
+            for (v = ctx->sMoveStack.uBegin[0]; 
+                 v < ctx->sMoveStack.uEnd[0];
+                 v++)
+            {
+                mv = ctx->sMoveStack.mvf[v].mv;
+                ASSERT(mv.bvFlags & MOVE_FLAG_ESCAPING_CHECK);
+                if (TRUE == MakeMove(ctx, mv))
+                {
+                    uTotalLegalMoves++;
+                    if (IS_KING(mv.pMoved))
+                    {
+                        uLegalKingMoves++;
+                    }
+                    UnmakeMove(ctx, mv);
+                }
+                else
+                {
+                    ctx->sMoveStack.mvf[v].mv.uMove = 0;
+                }
+            }
+
+            ASSERT(NUM_KING_MOVES(ctx, ctx->uPly) == uLegalKingMoves);
+            if (uTotalLegalMoves > 1) 
+            {
+                ASSERT(!ONE_LEGAL_MOVE(ctx, ctx->uPly));
+            }
+            else if (uTotalLegalMoves == 1) 
+            {
+                ASSERT(ONE_LEGAL_MOVE(ctx, ctx->uPly));
+            }
+            u++;
+        }
+    }
+    while(u < 1000);
+    SystemFreeMemory(ctx);
+}
+#endif
-- 
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