Adding identity-obj-proxy for CSS module mocks

package.json

@@ -34,7 +34,7 @@
     ],
     "moduleNameMapper": {
       "\\.svg$": "<rootDir>/src/__mocks__/svgMock.js",
-      "\\.css$": "<rootDir>/src/__mocks__/styleMock.js"
+      "\\.css$": "identity-obj-proxy"
     },
     "collectCoverageFrom": [
       "src/**/*.js",
@@ -71,6 +71,7 @@
     "html-webpack-plugin": "^2.30.1",
     "i18next": "^10.3.0",
     "i18next-browser-languagedetector": "^2.1.0",
+    "identity-obj-proxy": "^3.0.0",
     "jest": "^22.2.2",
     "json-loader": "^0.5.7",
     "npm-run-all": "^4.1.2",

src/__mocks__/styleMock.js

@@ -1 +0,0 @@
-module.exports = {};

src/components/Header/__snapshots__/test.js.snap

@@ -2,6 +2,7 @@
 
 exports[`Header rendering 1`] = `
 <header
+  className="header"
   data-banner="testing"
 >
   <h1>

src/components/Message/__snapshots__/test.js.snap

@@ -2,14 +2,18 @@
 
 exports[`Message rendering 1`] = `
 <div
-  className=""
+  className="message"
 >
-  <div>
+  <div
+    className="header"
+  >
     <h2>
       Testing
     </h2>
   </div>
-  <div>
+  <div
+    className="content"
+  >
     <p>
       Message content
     </p>
@@ -19,14 +23,18 @@ exports[`Message rendering 1`] = `
 
 exports[`Message rendering with icon 1`] = `
 <div
-  class=""
+  class="message"
 >
-  <div>
+  <div
+    class="header"
+  >
     <h2>
       Sample icon SVGTesting
     </h2>
   </div>
-  <div>
+  <div
+    class="content"
+  >
     <p>
       Message content
     </p>

yarn.lock

@@ -3366,7 +3366,7 @@ har-validator@~5.0.3:
     ajv "^5.1.0"
     har-schema "^2.0.0"
 
-harmony-reflect@^1.4.2:
+harmony-reflect@^1.4.2, harmony-reflect@^1.4.6:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/harmony-reflect/-/harmony-reflect-1.5.1.tgz#b54ca617b00cc8aef559bbb17b3d85431dc7e329"
 
@@ -3688,6 +3688,12 @@ icss-utils@^2.1.0:
   dependencies:
     postcss "^6.0.1"
 
+identity-obj-proxy@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/identity-obj-proxy/-/identity-obj-proxy-3.0.0.tgz#94d2bda96084453ef36fbc5aaec37e0f79f1fc14"
+  dependencies:
+    harmony-reflect "^1.4.6"
+
 ieee754@^1.1.4:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.8.tgz#be33d40ac10ef1926701f6f08a2d86fbfd1ad3e4"