1#include <stdio.h>
  2#include <stdlib.h>
  3#include "main.h"
  4
  5void test_world_create() {
  6  int width = 3;
  7  int height = 3;
  8  World *world = world_create(width, height);
  9
 10  assert(width == world->width);
 11  assert(height == world->height);
 12}
 13
 14void test_world_create_should_create_all_cells(){
 15  World *world = world_create(1, 1);
 16  assert(false == world_cell_at(world, 0)->alive);
 17}
 18
 19void any_live_cell_with_fewer_than_two_live_neighbours_dies_as_if_caused_by_under_population() {
 20  /*{ 'x', ' ', ' ' },*/
 21  /*{ ' ', ' ', ' ' },*/
 22  /*{ ' ', ' ', ' ' },*/
 23  World *world = world_create(3, 3);
 24  cell_change_life(world_cell_at(world, 0), true);
 25
 26  World *new_world = world_evolve(world);
 27  assert(false == world_cell_at(new_world, 0)->alive);
 28  assert(false == world_cell_at(new_world, 8)->alive);
 29}
 30
 31void any_live_cell_with_two_live_neighbours_lives_on_to_the_next_generation() {
 32  /*{ 'x', 'x', 'x' },*/
 33  /*{ ' ', ' ', ' ' },*/
 34  /*{ ' ', ' ', ' ' },*/
 35  World *world = world_create(3, 3);
 36  cell_change_life(world_cell_at(world, 0), true);
 37  cell_change_life(world_cell_at(world, 1), true);
 38  cell_change_life(world_cell_at(world, 2), true);
 39
 40  World* new_world = world_evolve(world);
 41  assert(true == world_cell_at(new_world, 1)->alive);
 42}
 43
 44void any_live_cell_with_three_live_neighbours_lives_on_to_the_next_generation() {
 45  /*{ 'x', ' ', 'x' },*/
 46  /*{ ' ', 'x', ' ' },*/
 47  /*{ ' ', ' ', ' ' },*/
 48  World *world = world_create(3, 3);
 49  cell_change_life(world_cell_at(world, 0), true);
 50  cell_change_life(world_cell_at(world, 2), true);
 51  cell_change_life(world_cell_at(world, 4), true);
 52
 53  World* new_world = world_evolve(world);
 54  assert(true == world_cell_at(new_world, 1)->alive);
 55}
 56
 57void any_live_cell_with_more_than_three_live_neighbours_dies_as_if_by_overcrowding() {
 58  /*{ ' ', 'x', ' ' },*/
 59  /*{ 'x', 'x', 'x' },*/
 60  /*{ ' ', 'x', ' ' },*/
 61  World *world = world_create(3, 3);
 62  cell_change_life(world_cell_at(world, 1), true);
 63  cell_change_life(world_cell_at(world, 3), true);
 64  cell_change_life(world_cell_at(world, 4), true);
 65  cell_change_life(world_cell_at(world, 5), true);
 66  cell_change_life(world_cell_at(world, 7), true);
 67
 68  assert(5 == world_neighbours(world, 0));
 69  assert(4 == world_neighbours(world, 1));
 70  assert(4 == world_neighbours(world, 4));
 71
 72  World* new_world = world_evolve(world);
 73  assert(false == world_cell_at(new_world, 4)->alive);
 74}
 75
 76void any_dead_cell_with_exactly_three_live_neighbours_becomes_a_live_cell_as_if_by_reproduction(){
 77  /*{ ' ', 'x', ' ' },*/
 78  /*{ 'x', ' ', 'x' },*/
 79  /*{ ' ', ' ', ' ' },*/
 80  World *world = world_create(3, 3);
 81  cell_change_life(world_cell_at(world, 1), true);
 82  cell_change_life(world_cell_at(world, 3), true);
 83  cell_change_life(world_cell_at(world, 5), true);
 84
 85  World* new_world = world_evolve(world);
 86  assert(true == world_cell_at(new_world, 4)->alive);
 87}
 88
 89void it_returns_the_correct_number_of_living_neighbors() {
 90  /*{ 'x', ' ', 'x' },*/
 91  /*{ ' ', ' ', ' ' },*/
 92  /*{ 'x', ' ', 'x' },*/
 93  World *world = world_create(3, 3);
 94  cell_change_life(world_cell_at(world, 0), true);
 95  cell_change_life(world_cell_at(world, 2), true);
 96  cell_change_life(world_cell_at(world, 6), true);
 97  cell_change_life(world_cell_at(world, 8), true);
 98
 99  assert(world_neighbours(world, 0) == 3);
100  assert(world_neighbours(world, 1) == 4);
101  assert(world_neighbours(world, 2) == 3);
102  assert(world_neighbours(world, 3) == 4);
103  assert(world_neighbours(world, 4) == 4);
104  assert(world_neighbours(world, 5) == 4);
105  assert(world_neighbours(world, 6) == 3);
106  assert(world_neighbours(world, 7) == 4);
107  assert(world_neighbours(world, 8) == 3);
108}
109
110void world_tests() {
111  run_test(test_world_create);
112  run_test(test_world_create_should_create_all_cells);
113  run_test(any_live_cell_with_fewer_than_two_live_neighbours_dies_as_if_caused_by_under_population);
114  run_test(any_live_cell_with_two_live_neighbours_lives_on_to_the_next_generation);
115  run_test(any_live_cell_with_three_live_neighbours_lives_on_to_the_next_generation);
116  run_test(any_live_cell_with_more_than_three_live_neighbours_dies_as_if_by_overcrowding);
117  run_test(any_dead_cell_with_exactly_three_live_neighbours_becomes_a_live_cell_as_if_by_reproduction);
118  run_test(it_returns_the_correct_number_of_living_neighbors);
119}
120