1 files changed, 20 insertions, 0 deletions
diff --git a/src/genome/genome.test.js b/src/genome/genome.test.js
new file mode 100644
index 0000000..853d103
--- /dev/null
+++ b/src/genome/genome.test.js
@@ -0,0 +1,20 @@
+'use strict';
+
+import { mutation_type, mutate } from './genome';
+
+
+test('basic gene mutations', () => {
+  expect(mutate([0, 1, 2], mutation_type.none, 0)).toEqual([0, 1, 2]);
+
+  expect(mutate([0, 1, 2], mutation_type.source, 0.2)).toEqual([0, 1, 2]);
+  expect(mutate([1, 1, 2], mutation_type.source, 0.2)).toEqual([0, 1, 2]);
+  expect(mutate([0, 1, 2], mutation_type.source, 0.8)).toEqual([1, 1, 2]);
+
+  expect(mutate([0, 1, 2], mutation_type.sink, 0.2)).toEqual([0, 0, 2]);
+  expect(mutate([0, 1, 2], mutation_type.sink, 0.8)).toEqual([0, 2, 2]);
+  expect(mutate([0, 0, 2], mutation_type.sink, 0.2)).toEqual([0, 0, 2]);
+
+  expect(mutate([0, 1, 2], mutation_type.weight, 0.5)).toEqual([0, 1, 0]);
+  expect(mutate([0, 1, 2], mutation_type.weight, 0.0)).toEqual([0, 1, -4]);
+  expect(mutate([0, 1, 2], mutation_type.weight, 1.0)).toEqual([0, 1, 4]);
+});