linked metrics-endpoint (#132)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/132
Reviewed-by: Timotheus Pokorra <timotheus.pokorra@hostsharing.net>

src/test/java/net/hostsharing/hsadminng/arch/ArchitectureTest.java

@@ -16,6 +16,7 @@ import net.hostsharing.hsadminng.hs.booking.item.HsBookingItem;
 import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetRbacEntity;
 import net.hostsharing.hsadminng.rbac.context.ContextBasedTest;
 import net.hostsharing.hsadminng.rbac.grant.RbacGrantsDiagramService;
+import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.repository.Repository;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -120,6 +121,7 @@ public class ArchitectureTest {
     @SuppressWarnings("unused")
     public static final ArchRule configPackageRule = classes()
             .that().resideInAPackage("..config..")
+            .and().areNotAnnotatedWith(SpringBootTest.class)
             .should().onlyDependOnClassesThat()
             .resideOutsideOfPackage(NET_HOSTSHARING_HSADMINNG);
 

src/test/java/net/hostsharing/hsadminng/config/CustomActuatorEndpointAcceptanceTest.java

@@ -0,0 +1,42 @@
+package net.hostsharing.hsadminng.config;
+
+import io.restassured.RestAssured;
+import net.hostsharing.hsadminng.HsadminNgApplication;
+import net.hostsharing.hsadminng.test.DisableSecurityConfig;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.server.LocalManagementPort;
+import org.springframework.test.context.ActiveProfiles;
+
+import static net.hostsharing.hsadminng.rbac.test.JsonMatcher.lenientlyEquals;
+
+@SpringBootTest(
+        webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
+        classes = { HsadminNgApplication.class, DisableSecurityConfig.class }
+)
+@ActiveProfiles("test")
+class CustomActuatorEndpointAcceptanceTest {
+
+    @LocalManagementPort
+    private Integer managementPort;
+
+    @Test
+    void shouldListMetricLinks() {
+        RestAssured // @formatter:off
+                .given()
+                    .port(managementPort)
+                .when()
+                    .get("http://localhost/actuator/metric-links")
+                .then().log().all().assertThat()
+                    .statusCode(200)
+                    .contentType("application/vnd.spring-boot.actuator.v3+json")
+                    .body("", lenientlyEquals("""
+                    {
+                        "application.ready.time": "http://localhost:%{managementPort}/actuator/metrics/application.ready.time",
+                        "application.started.time": "http://localhost:%{managementPort}/actuator/metrics/application.started.time"
+                    }
+                    """.replace("%{managementPort}", managementPort.toString())));
+                // @formatter:on
+    }
+
+}