✏️ jestの設定修正

Author: ti-aiuto

__mocks__/fileMock.js

@@ -0,0 +1 @@
+module.exports = 'test-file-stub';

jest.config.js

@@ -2,7 +2,9 @@ module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'jsdom',
   moduleNameMapper: {
-    '^@/(.+)': '<rootDir>/src/$1'
+    '^@/(.+)': '<rootDir>/src/$1',
+    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
+      '<rootDir>/__mocks__/fileMock.js'
   },
   moduleFileExtensions: ['js', 'ts', 'json', 'vue'],
   transform: {