diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index abfa3af..1425132 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ lint:
 test:
   stage: checking
   script:
-    - yarn run test
+    - yarn run test:start
   only:
     - merge_requests
 
diff --git a/.yarn/install-state.gz b/.yarn/install-state.gz
index a448b9f..9f2fe1d 100644
Binary files a/.yarn/install-state.gz and b/.yarn/install-state.gz differ
diff --git a/configs/jest/__mocks__/fileMock.js b/configs/jest/__mocks__/fileMock.js
new file mode 100644
index 0000000..86059f3
--- /dev/null
+++ b/configs/jest/__mocks__/fileMock.js
@@ -0,0 +1 @@
+module.exports = 'test-file-stub';
diff --git a/jest.config.js b/jest.config.js
index 9a8b35b..f0804c4 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -7,4 +7,9 @@ module.exports = {
   },
   setupFilesAfterEnv: ['./configs/jest/setupTests.js'],
   modulePaths: ['src'],
+  moduleNameMapper: {
+    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
+      './configs/jest/__mocks__/fileMock.js',
+    '\\.(css|less|scss)$': 'identity-obj-proxy',
+  },
 };
diff --git a/offline_node_modules/harmony-reflect-npm-1.6.2-47a9f53361-fa5b251fbe.zip b/offline_node_modules/harmony-reflect-npm-1.6.2-47a9f53361-fa5b251fbe.zip
new file mode 100644
index 0000000..f0ec949
Binary files /dev/null and b/offline_node_modules/harmony-reflect-npm-1.6.2-47a9f53361-fa5b251fbe.zip differ
diff --git a/offline_node_modules/identity-obj-proxy-npm-3.0.0-080ab9ac1e-a3fc4de004.zip b/offline_node_modules/identity-obj-proxy-npm-3.0.0-080ab9ac1e-a3fc4de004.zip
new file mode 100644
index 0000000..741008a
Binary files /dev/null and b/offline_node_modules/identity-obj-proxy-npm-3.0.0-080ab9ac1e-a3fc4de004.zip differ
diff --git a/package.json b/package.json
index f1cf1d4..b0b99f6 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "build:prod": "ksv741-react-scripts build --env mode=production",
     "analyze:prod": "ksv741-react-scripts build --env mode=production analyze=true",
     "lint": "eslint src",
-    "test": "jest",
+    "test:start": "jest",
+    "test:coverage": "jest --coverage",
     "release": "standard-version"
   },
   "engines": {
@@ -31,6 +32,7 @@
   "dependencies": {
     "classnames": "2.5.1",
     "normalize.css": "8.0.1",
+    "prop-types": "15.8.1",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-router-dom": "6.22.3"
@@ -48,6 +50,7 @@
     "eslint-config-ksv741": "0.0.2",
     "eslint-import-resolver-webpack": "0.13.8",
     "husky": "9.0.11",
+    "identity-obj-proxy": "3.0.0",
     "jest": "29.7.0",
     "jest-environment-jsdom": "29.7.0",
     "ksv741-react-scripts": "0.3.1",
diff --git a/yarn.lock b/yarn.lock
index d5e3031..2141898 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8408,6 +8408,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"harmony-reflect@npm:^1.4.6":
+  version: 1.6.2
+  resolution: "harmony-reflect@npm:1.6.2"
+  checksum: 10c0/fa5b251fbeff0e2d925f0bfb5ffe39e0627639e998c453562d6a39e41789c15499649dc022178c807cf99bfb97e7b974bbbc031ba82078a26be7b098b9bc2b1a
+  languageName: node
+  linkType: hard
+
 "has-bigints@npm:^1.0.1, has-bigints@npm:^1.0.2":
   version: 1.0.2
   resolution: "has-bigints@npm:1.0.2"
@@ -8746,6 +8753,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"identity-obj-proxy@npm:3.0.0":
+  version: 3.0.0
+  resolution: "identity-obj-proxy@npm:3.0.0"
+  dependencies:
+    harmony-reflect: "npm:^1.4.6"
+  checksum: 10c0/a3fc4de0042d7b45bf8652d5596c80b42139d8625c9cd6a8834e29e1b6dce8fccabd1228e08744b78677a19ceed7201a32fed8ca3dc3e4852e8fee24360a6cfc
+  languageName: node
+  linkType: hard
+
 "ignore@npm:^5.2.0, ignore@npm:^5.2.4":
   version: 5.3.1
   resolution: "ignore@npm:5.3.1"
@@ -10886,11 +10902,13 @@ __metadata:
     eslint-config-ksv741: "npm:0.0.2"
     eslint-import-resolver-webpack: "npm:0.13.8"
     husky: "npm:9.0.11"
+    identity-obj-proxy: "npm:3.0.0"
     jest: "npm:29.7.0"
     jest-environment-jsdom: "npm:29.7.0"
     ksv741-react-scripts: "npm:0.3.1"
     lint-staged: "npm:15.2.2"
     normalize.css: "npm:8.0.1"
+    prop-types: "npm:15.8.1"
     react: "npm:18.2.0"
     react-dom: "npm:18.2.0"
     react-router-dom: "npm:6.22.3"
@@ -12513,7 +12531,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"prop-types@npm:^15.8.1":
+"prop-types@npm:15.8.1, prop-types@npm:^15.8.1":
   version: 15.8.1
   resolution: "prop-types@npm:15.8.1"
   dependencies: