Fix flyway migration and use h2 in unit tests.

backend/pom.xml

@@ -74,6 +74,12 @@
             <artifactId>spring-security-test</artifactId>
             <scope>test</scope>
         </dependency>
+        
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>test</scope>
+        </dependency>
 
         <!-- JSON Processing -->
         <dependency>
@@ -132,4 +138,4 @@
             </plugin>
         </plugins>
     </build>
-</project> 
+</project>

backend/src/main/resources/db/migration/V1__initial_schema.sql

@@ -1,5 +1,18 @@
 CREATE SCHEMA IF NOT EXISTS vibing;
 
+CREATE TABLE IF NOT EXISTS vibing.locations (
+    id SERIAL PRIMARY KEY,
+    name TEXT NOT NULL,
+    address TEXT,
+    city TEXT,
+    country TEXT,
+    postal_code TEXT,
+    latitude DOUBLE PRECISION,
+    longitude DOUBLE PRECISION,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
 CREATE TABLE IF NOT EXISTS vibing.activities (
     id SERIAL PRIMARY KEY,
     name TEXT NOT NULL,
@@ -20,17 +33,3 @@ CREATE TABLE IF NOT EXISTS vibing.activity_tags (
     FOREIGN KEY (activity_id) REFERENCES vibing.activities(id) ON DELETE CASCADE,
     PRIMARY KEY (activity_id, tag)
 );
-
-CREATE TABLE IF NOT EXISTS vibing.locations (
-    id SERIAL PRIMARY KEY,
-    name TEXT NOT NULL,
-    address TEXT,
-    city TEXT,
-    country TEXT,
-    postal_code TEXT,
-    latitude DOUBLE PRECISION,
-    longitude DOUBLE PRECISION,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-

backend/src/test/java/com/vibing/backend/VibingBackendApplicationTests.java

@@ -2,15 +2,17 @@ package com.vibing.backend;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
 
 /**
  * Basic test class for the Vibing Backend application.
  */
 @SpringBootTest
+@ActiveProfiles("test")
 class VibingBackendApplicationTests {
 
     @Test
     void contextLoads() {
         // This test verifies that the Spring application context loads successfully
     }
-} 
+}

backend/src/test/resources/application-test.yml

@@ -1,10 +1,21 @@
 spring:
   datasource:
-    url: jdbc:postgresql://localhost:5432/your_test_database
-    username: test_user
-    password: test_password
+    url: jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=PostgreSQL
+    username: sa
+    password: 
+    driver-class-name: org.h2.Driver
+  
+  h2:
+    console:
+      enabled: true
+  
+  jpa:
+    hibernate:
+      ddl-auto: none  # Let Flyway handle schema creation
+    show-sql: true
+    database-platform: org.hibernate.dialect.H2Dialect
   
   flyway:
     enabled: true
     clean-disabled: false  # Allow clean in tests
-    locations: classpath:db/migration
+    locations: classpath:db/migration