Add shop creation test script

test/test_shk.lua

@@ -0,0 +1,50 @@
+
+-- Test shop creation
+
+function shk_test1(doors)
+des.map([[
+---------
+|...|...|
+|...+...|
+|...|+--|
+|----...|
+|...|+--|
+|...+...|
+|...|...|
+---------
+]]);
+
+des.teleport_region({ region = { 5,1, 7,7 }, dir = "both" });
+des.stair("down", 6, 2);
+des.stair("up", 6, 6);
+
+des.door("open", 5, 3);
+des.door("open", 5, 5);
+
+if (doors == 1) then
+  des.door("open", 4, 2);
+  des.door("closed", 4, 6);
+end
+
+des.region({ region = { 1,1, 1,1 }, type = "shop", irregular=1, filled=1, lit=1 });
+des.region({ region = { 1,5, 1,5 }, type = "shop", irregular=1, filled=1, lit=1 });
+
+if (doors == 2) then
+  des.door("open", 4, 2);
+  des.door("closed", 4, 6);
+end
+
+end -- shk_test1
+
+
+function do_test(testfunc, param)
+    des.reset_level();
+    des.level_init({ style = "solidfill", fg = " " });
+    testfunc(param);
+    des.finalize_level();
+end
+
+do_test(shk_test1, 0);
+do_test(shk_test1, 1);
+do_test(shk_test1, 2);
+