add first integration test based on Testcontainers

src/test/java/net/hostsharing/hsadminng/RbacIntegrationTests.java

@@ -0,0 +1,26 @@
+package net.hostsharing.hsadminng;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import javax.transaction.Transactional;
+
+@DataJpaTest
+class RbacIntegrationTests {
+
+    @PersistenceContext
+    private EntityManager em;
+
+    @Test
+    @Transactional
+    void currentUser() {
+        em.createNativeQuery("SET LOCAL hsadminng.currentUser = 'mike@hostsharing.net';").executeUpdate();
+        em.createNativeQuery("SET LOCAL hsadminng.assumedRoles = '';").executeUpdate();
+
+        final var result = em.createNativeQuery("select currentUser()").getSingleResult();
+        Assertions.assertThat(result).isEqualTo("mike@hostsharing.net");
+    }
+}

src/test/resources/application.yml

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+spring:
+    sql:
+        init:
+            platform: postgres
+
+    datasource:
+        url: jdbc:tc:postgresql:12.9-alpine:///spring_boot_testcontainers
+        username: postgres
+        password: password
+
+    jpa:
+        properties:
+            hibernate:
+                default_schema: public
+                dialect: org.hibernate.dialect.PostgreSQLDialect
+        hibernate:
+            ddl-auto: none
+        show-sql: true
+
+    test:
+        database:
+            replace: none
+
+    liquibase:
+        change-log: classpath:/db/changelog/db.changelog-master.yaml
+        contexts: test
+
+logging:
+    level:
+        liquibase: INFO
+
+    #    spring.datasource.driver-class-name=org.postgresql.Driver
+#    spring.datasource.url=${DB_URL}
+#    spring.datasource.username=${DB_USERNAME}
+#    spring.datasource.password=${DB_PASSWORD}
+
+#    spring.jpa.properties.hibernate.default-schema=public