chore: migrate tests from karma to jest

.eslintrc.js

@@ -4,10 +4,7 @@ module.exports = {
     'browser': true,
     'amd': true,
     'node': true,
-    'jasmine': true
-  },
-  'globals': {
-    'fixture': true
+    'jest': true
   },
   'ignorePatterns': ['node_modules/', 'dist/', 'docs/', 'report/']
 };

README.md

@@ -22,7 +22,7 @@
 - [🔧 Pull Request Steps](#-pull-request-steps)
   - [Setup](#setup)
   - [Develop](#develop)
-    - [Run karma test](#run-karma-test)
+    - [Run jest test](#run-jest-test)
   - [Pull Request](#pull-request)
 - [💬 Contributing](#-contributing)
 - [🍞 TOAST UI Family](#-toast-ui-family)
@@ -187,7 +187,7 @@ $ npm run test
 Let's start development!
 Don't miss adding test cases and then make green rights.
 
-#### Run karma test
+#### Run jest test
 
 ``` sh
 $ npm run test

jest.config.js

@@ -0,0 +1,9 @@
+/* eslint-disable strict */
+module.exports = {
+  moduleFileExtensions: ['js'],
+  testEnvironment: 'jsdom',
+  testMatch: ['<rootDir>/**/*.spec.js'],
+  transformIgnorePatterns: ['<rootDir>/node_modules/'],
+  clearMocks: true,
+  setupFilesAfterEnv: ['jest-extended']
+};