feat(back-end): integration of clamAVS

backend/build.gradle

@@ -29,6 +29,7 @@ dependencies {
 	runtimeOnly 'org.postgresql:postgresql'
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testRuntimeOnly 'com.h2database:h2'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 	compileOnly 'org.projectlombok:lombok'
 	annotationProcessor 'org.projectlombok:lombok'

backend/src/test/java/com/printcalculator/controller/OrderIntegrationTest.java

@@ -38,6 +38,14 @@ import static org.mockito.Mockito.when;
 
 @SpringBootTest
 @AutoConfigureMockMvc
+@org.springframework.test.context.TestPropertySource(properties = {
+    "spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=PostgreSQL",
+    "spring.datasource.driverClassName=org.h2.Driver",
+    "spring.datasource.username=sa",
+    "spring.datasource.password=",
+    "spring.jpa.database-platform=org.hibernate.dialect.H2Dialect",
+    "spring.jpa.hibernate.ddl-auto=create-drop"
+})
 class OrderIntegrationTest {
 
     @MockBean