Adding tests.

.eslintrc.json

@@ -6,7 +6,8 @@
   },
   "extends": "eslint:recommended",
   "parserOptions": {
-    "sourceType": "module"
+    "sourceType": "module",
+    "ecmaVersion": "2017"
   },
   "rules": {
     "indent": [

package.json

@@ -9,15 +9,21 @@
   },
   "author": "mjswensen",
   "license": "MIT",
+  "jest": {
+    "rootDir": "lib"
+  },
   "scripts": {
     "build": "eslint src && babel --out-dir lib src",
     "start": "watch 'yarn run build' src",
+    "test": "yarn run build; jest",
     "prepublish": "yarn run build"
   },
   "devDependencies": {
     "babel-cli": "^6.18.0",
     "babel-preset-latest": "^6.16.0",
     "eslint": "^3.12.2",
+    "jest": "^18.1.0",
+    "themer-colors-default": "^1.0.1",
     "watch": "^1.0.1"
   },
   "dependencies": {

src/index.spec.js

@@ -0,0 +1,20 @@
+import { render } from './index';
+import { colors } from 'themer-colors-default';
+
+describe('Hyper.app theme generator', () => {
+
+  const promisedFiles = render(colors, {});
+
+  it('should render two files when given a color set with both a light and a dark theme', async () => {
+    const files = await Promise.all(promisedFiles);
+    expect(files.length).toBe(2);
+    expect(files.some(file => /dark/.test(file.name))).toBe(true);
+    expect(files.some(file => /light/.test(file.name))).toBe(true);
+  });
+
+  it('should render files with no missing values', async () => {
+    const files = await Promise.all(promisedFiles);
+    expect(files.every(file => !/undefined/.test(file.contents.toString('utf8')))).toBe(true);
+  });
+
+});