use main to call all tests:

packages/gecode/clp_examples/send_most_money.yap

@@ -6,20 +6,31 @@
 %% under the terms of the GNU Lesser General Public License as published by the
 %% Free Software Foundation, either version 3 of the License, or (at your
 %% option) any later version.
-%% 
+%%
 %% This program is distributed in the hope that it will be useful, but WITHOUT
 %% ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 %% FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 %% more details.
-%% 
+%%
 %% You should have received a copy of the GNU Lesser General Public License
 %% along with this program.  If not, see <http://www.gnu.org/licenses/>.
 %%=============================================================================
 
 :- use_module(library(gecode/clpfd)).
 
+
+main :-
+        statistics( runtime, _ ),
+        once( send_most_money(Letters, Money) ),
+        statistics( runtime, [DT|_] ),
+%       findall(Queens, queens(I, Queens), Solutions ),
+%       length( Solutions, N),
+        format('took ~w msec to find first solution, ~w.~n', [DT, Letters:Money]),
+        fail.
+main.
+
 %   S E N D
-% + M O S T
+% + M O S T
 % ---------
 % M O N E Y
 send_most_money(Letters, Money) :-