1 files changed, 25 insertions, 0 deletions
diff --git a/src/simulation/lattice_rules.test.js b/src/simulation/lattice_rules.test.js
new file mode 100644
index 0000000..a91400e
--- /dev/null
+++ b/src/simulation/lattice_rules.test.js
@@ -0,0 +1,25 @@
+import { world_update } from '../world/world.js';
+import { lattice_rules } from './lattice_rules.js';
+
+
+test("blinker", () => {
+  const L = { type: 'active', flags: {} };
+  const D = { type: 'empty', flags: {} };
+  const lattice = [
+    [ D, D, D, D, D ],
+    [ D, D, D, D, D ],
+    [ D, L, L, L, D ],
+    [ D, D, D, D, D ],
+    [ D, D, D, D, D ],
+  ];
+
+  const world = { lattice, lattice_rules, agents: [], senses: [], actions: [] };
+  expect(world_update(world).lattice).toEqual([
+    [ D, D, D, D, D ],
+    [ D, D, L, D, D ],
+    [ D, D, L, D, D ],
+    [ D, D, L, D, D ],
+    [ D, D, D, D, D ],
+  ]);
+  expect(world_update(world_update(world)).lattice).toEqual(lattice);
+});