Commit 7c300d9

@@ -13,6 +13,10 @@ Cell* cell_create(int number_of_cells) {
   return cells;
 }
 
+int world_number_of_cells(World *world) {
+  return world->width * world->height;
+}
+
 World *world_create(int width, int height) {
   int number_of_cells = width*height;
   World *world = (World *)malloc(sizeof(World));
@@ -23,3 +27,11 @@ World *world_create(int width, int height) {
   world->cells = cell_create(number_of_cells);
   return world;
 }
+
+World* world_evolve(World *world) {
+  int number_of_cells = world_number_of_cells(world);
+  for (int i = 0; i < number_of_cells; i++) {
+    world->cells[sizeof(Cell) * i].alive = false;
+  }
+  return world;
+}

@@ -21,10 +21,23 @@ void test_world_create_should_create_all_cells(){
   assert(false == world->cells[0].alive);
 }
 
+void any_live_cell_with_fewer_than_two_live_neighbours_dies_as_if_caused_by_under_population() {
+  /*{ 'x', ' ', ' ' },*/
+  /*{ ' ', ' ', ' ' },*/
+  /*{ ' ', ' ', ' ' },*/
+  World *world = world_create(3, 3);
+  world->cells[0].alive = false;
+
+  world_evolve(world);
+  assert(false == world->cells[0].alive);
+  assert(false == world->cells[8].alive);
+}
+
 int main()
 {
   run_test(test_world_create);
   run_test(test_world_create_should_create_all_cells);
+  run_test(any_live_cell_with_fewer_than_two_live_neighbours_dies_as_if_caused_by_under_population);
   printf("\nOK\n");
   return 0;
 }

@@ -1,4 +1,3 @@
 *.out
 *.dSYM
-gol
-gol_test
+bin