fix test cases

Author: udaypydi

config/assetsMock.js

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

jest.config.js

@@ -6,6 +6,7 @@ module.exports = {
   clearMocks: true,
   coverageDirectory: "coverage",
   moduleNameMapper: {
+    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/config/assetsMock.js",
     "\\.(css|less|scss)$": "identity-obj-proxy"
   },
   testEnvironment: "jsdom",

src/__tests__/__snapshots__/app.spec.js.snap

@@ -5,7 +5,15 @@ exports[`should take a snapshot 1`] = `
   <div
     class="App--Container"
   >
-    Welcome to React Boilerplate!
+    <p
+      class="App--Title"
+    >
+      Welcome To React Boilerplate
+    </p>
+    <img
+      class="App--Image"
+      src=""
+    />
   </div>
 </DocumentFragment>
 `;