add more tests (#26)

* added more tests

* (fix) no cpu profile.

__tests__/functions/getAttributeLevels.js

@@ -0,0 +1,23 @@
+require('module-alias/register');
+const { getAttributeLevels } = require('@dsabot/getAttributeLevels');
+
+const Character = {
+    attributes: [
+        { id: 'mut', level: 10 },
+        { id: 'klugheit', level: 11 },
+        { id: 'intuition', level: 12 },
+        { id: 'charisma', level: 13 },
+        { id: 'fingerfertigkeit', level: 14 },
+        { id: 'gewandtheit', level: 15 },
+        { id: 'konstitution', level: 16 },
+        { id: 'koerperkraft', level: 17 },
+    ],
+};
+
+it('should return an array', () => {
+    expect(getAttributeLevels(['MU', 'IN', 'KO'], Character)).toBeInstanceOf(Array);
+});
+
+it('should have 3 items in it.', () => {
+    expect(getAttributeLevels(['MU', 'IN', 'KO'], Character)).toHaveLength(3);
+});