1 files changed, 203 insertions, 0 deletions
diff --git a/src/testfen.c b/src/testfen.c
new file mode 100755
index 0000000..6cb2903
--- /dev/null
+++ b/src/testfen.c
@@ -0,0 +1,203 @@
+/**
+
+Copyright (c) Scott Gasch
+
+Module Name:
+
+    testfen.c
+
+Abstract:
+
+    Test the fen parser.
+
+Author:
+
+    Scott Gasch ([email protected]) 11 May 2004
+
+Revision History:
+
+    $Id: testfen.c 345 2007-12-02 22:56:42Z scott $
+
+**/
+
+#include "chess.h"
+
+char *_szPieceAbbrevs = "pPnNbBrRqQkK";
+
+#ifdef TEST
+CHAR *
+GenerateRandomLegalFenString(void)
+/**
+
+Routine description:
+
+Parameters:
+
+    void
+
+Return value:
+
+    CHAR
+
+**/
+{
+    static CHAR buf[MEDIUM_STRING_LEN_CHAR];
+    CHAR *pch = buf;              
+    static ULONG uPieceLimits[14] = 
+      // -  -  p  P  n  N  b  B  r  R  q  Q  k  K
+        {0, 0, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1};
+    ULONG uPieceCounts[14] = 
+      // -  -  p  P  n  N  b  B  r  R  q  Q  k  K
+        {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1};
+    ULONG uNumPiecesOnBoard = 2;
+    COOR c;
+    COOR cKingLoc[2];
+    PIECE p;
+
+    memset(buf, 0, sizeof(buf));
+
+    //
+    // Do the board.  Note: this can result in a position where one or
+    // both kings are en-prise, pawns on the 1st/8th etc.  The purpose
+    // is just to test PositionToFen and FenToPosition, not to make 
+    // legal chess position.
+    //
+    cKingLoc[WHITE] = RANDOM_COOR;
+    do
+    {
+        cKingLoc[BLACK] = RANDOM_COOR;
+    }
+    while(cKingLoc[WHITE] == cKingLoc[BLACK]);
+    ASSERT(IS_ON_BOARD(cKingLoc[WHITE]));
+    ASSERT(IS_ON_BOARD(cKingLoc[BLACK]));
+    
+    FOREACH_SQUARE(c)
+    {
+        if (!IS_ON_BOARD(c)) 
+        {
+            if (c % 8 == 0) *pch++ = '/';
+            continue;
+        }
+        else
+        {
+            if (c == cKingLoc[WHITE])
+            {
+                *pch = 'K';
+            }
+            else if (c == cKingLoc[BLACK])
+            {
+                *pch = 'k';
+            }
+            else
+            {
+                if ((rand() & 1) &&
+                    (uNumPiecesOnBoard < 32))
+                {
+                    do
+                    {
+                        p = RANDOM_PIECE;
+                        ASSERT(IS_VALID_PIECE(p));
+                    }
+                    while(uPieceCounts[p] >= uPieceLimits[p]);
+                    uPieceCounts[p]++;
+                    uNumPiecesOnBoard++;
+                    *pch = *(_szPieceAbbrevs + (p - 2));
+                }
+                else
+                {
+                    *pch = '-';
+                }
+            }
+        }
+        pch++;
+    }
+    *pch++ = ' ';
+
+    //
+    // Do side on move
+    //
+    *pch = 'w';
+    if (rand() & 1)
+    {
+        *pch = 'b';
+    }
+    pch++;
+    *pch++ = ' ';
+
+    //
+    // Do castling permissions
+    //
+    *pch++ = '-';
+    *pch++ = ' ';
+    
+    //
+    // Do the rest
+    //
+    strcat(buf, "- 0 1");
+    
+    return(buf);
+}
+
+
+void
+TestFenCode(void)
+{
+    char *p;
+    char *q;
+    UINT u = 0;
+    POSITION pos1, pos2;
+    
+    Trace("Testing FEN translation code...\n");
+    do
+    {
+        //
+        // Generate a random legal FEN string and parse it into pos1.
+        //
+        p = GenerateRandomLegalFenString();
+        if (FALSE == FenToPosition(&pos1, p))
+        {
+            UtilPanic(TESTCASE_FAILURE,
+                      NULL, p, NULL, NULL,
+                      __FILE__, __LINE__);
+        }
+
+        //
+        // Set q to be the FEN code of the position at pos1.
+        //
+        q = PositionToFen(&pos1);
+        if (NULL == q)
+        {
+            UtilPanic(TESTCASE_FAILURE,
+                      &pos1, "q <- PositionToFen", NULL, NULL,
+                      __FILE__, __LINE__);
+        }
+
+        //
+        // Set pos2 to be the position represented in q. 
+        //
+        if (FALSE == FenToPosition(&pos2, q))
+        {
+            UtilPanic(TESTCASE_FAILURE,
+                      NULL, q, NULL, NULL,
+                      __FILE__, __LINE__);
+        }
+
+        //
+        // Pos1 and pos2 should be identical
+        //
+        if (FALSE == PositionsAreEquivalent(&pos1, &pos2))
+        {
+            UtilPanic(TESTCASE_FAILURE,
+                      NULL,
+                      "One initial FEN string has generated two "
+                      "different positions",
+                      &pos1,
+                      &pos2,
+                      __FILE__, __LINE__);
+        }
+        SystemFreeMemory(q);
+        u++;
+    }
+    while(u < 10000);
+}
+#endif