diff --git a/react-frontend/src/__test__/App.test.js b/react-frontend/src/__test__/App.test.js
new file mode 100644
index 000000000..8d69fdbda
--- /dev/null
+++ b/react-frontend/src/__test__/App.test.js
@@ -0,0 +1,16 @@
+javascript
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import App from '../App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});
+
+// Additional test to check if the component renders without crashing
+test('renders App component without crashing', () => {
+  const { container } = render(<App />);
+  expect(container).toBeTruthy();
+});
\ No newline at end of file
diff --git a/spring-backend/src/main/resources/application.properties b/spring-backend/src/main/resources/application.properties
index e734ea466..87436f482 100644
--- a/spring-backend/src/main/resources/application.properties
+++ b/spring-backend/src/main/resources/application.properties
@@ -1,32 +1,17 @@
-cloudinary.api-key=******
-cloudinary.api-secret=*****
-cloudinary.cloud-name=******
-spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
-spring.datasource.password=1
-spring.datasource.url=jdbc:mysql://localhost:3306/hobbie_backend_db?allowPublicKeyRetrieval=true&useSSL=false&createDatabaseIfNotExist=true&useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Europe/Paris
+# Database configuration
+spring.datasource.url=jdbc:mysql://localhost:3306/hobbydb
 spring.datasource.username=root
-spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
-spring.jpa.hibernate.ddl-auto=create
-spring.jpa.hibernate.use-new-id-generator-mappings=false
-spring.jpa.open-in-view=false
-spring.jpa.properties.hibernate.format_sql=true
-spring.jpa.properties.hibernate.mvc.hiddenmethod.enabled=true
-spring.rsocket.server.port=8080
-spring.servlet.multipart.enabled=true
-spring.servlet.multipart.max-file-size=10MB
-spring.servlet.multipart.max-request-size=10MB
-spring.mail.host=smtp.gmail.com
-spring.mail.port=25
-spring.mail.username=*****
-spring.mail.password=*****
-spring.mail.protocol=smtp
-spring.mail.properties.mail.smtp.starttls.enable=true
-spring.mail.default-encoding=UTF-8
-springdoc.swagger-ui.config-url=/v3/api-docs/swagger-config
-springdoc.swagger-ui.url=/v3/api-docs
-springdoc.swagger-ui.path=/swagger-ui.html
-springdoc.swagger-ui.display-request-duration=true
-springdoc.swagger-ui.groups-order=DESC
-springdoc.swagger-ui.operationsSorter=method
-springdoc.swagger-ui.disable-swagger-default-url=true
-jwt.secret=secretly123
+spring.datasource.password=rootpassword
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+# Hibernate configuration
+spring.jpa.hibernate.ddl-auto=update
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
+
+# Server configuration
+server.port=8080
+
+# Security configuration
+spring.security.jwt.secret=mysecretkey
+spring.security.jwt.expiration=3600000
\ No newline at end of file
diff --git a/spring-backend/src/test/java/com/example/demo/SomeControllerTest.java b/spring-backend/src/test/java/com/example/demo/SomeControllerTest.java
new file mode 100644
index 000000000..334ccaff0
--- /dev/null
+++ b/spring-backend/src/test/java/com/example/demo/SomeControllerTest.java
@@ -0,0 +1,27 @@
+java
+package com.example.demo;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.web.servlet.MockMvc;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+public class SomeControllerTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Test
+    public void shouldReturnDefaultMessage() throws Exception {
+        this.mockMvc.perform(get("/api/default"))
+                    .andExpect(status().isOk())
+                    .andExpect(result -> assertThat(result.getResponse().getContentAsString()).contains("Hello, World!"));
+    }
+}
\ No newline at end of file