chore: migrate tests from karma to jest

.eslintrc.js

@@ -5,7 +5,7 @@ module.exports = {
   },
   env: {
     browser: true,
-    jasmine: true,
+    jest: true,
     commonjs: true
   },
   globals: {

README.md

@@ -33,7 +33,7 @@
   - [Setup](#setup)
   - [Develop](#develop)
     - [Run webpack-dev-server](#run-webpack-dev-server)
-    - [Run karma test](#run-karma-test)
+    - [Run jest test](#run-jest-test)
   - [Pull Request](#pull-request)
 - [💬 Contributing](#-contributing)
 - [🍞 TOAST UI Family](#-toast-ui-family)
@@ -222,7 +222,7 @@ $ npm run serve
 $ npm run serve:ie8 # Run on Internet Explorer 8
 ```
 
-#### Run karma test
+#### Run jest test
 
 ``` sh
 $ npm run test

bower.json

@@ -17,7 +17,7 @@
         "test",
         "tui-note.config.js",
         "tuidoc.config.json",
-        "karma.conf.js",
+        "jest.config.js",
         "webpack.config.js",
         "package.json",
         "package-lock.json"

jest.config.js

@@ -0,0 +1,8 @@
+/* eslint-disable strict */
+module.exports = {
+  moduleFileExtensions: ['js'],
+  testEnvironment: 'jsdom',
+  testMatch: ['<rootDir>/**/*.spec.js'],
+  transformIgnorePatterns: ['<rootDir>/node_modules/'],
+  clearMocks: true
+};