Affected Issue(s): #611

What this commit has achieved:
1. Added Integration Test for future-proof

src/test/java/ca/uhn/fhir/jpa/starter/MdmTest.java

@@ -0,0 +1,29 @@
+package ca.uhn.fhir.jpa.starter;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.hl7.fhir.dstu2.model.Subscription.SubscriptionChannelType;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import ca.uhn.fhir.jpa.api.config.JpaStorageSettings;
+import ca.uhn.fhir.jpa.nickname.INicknameSvc;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = {Application.class}, properties = {
+		"hapi.fhir.fhir_version=r4",
+		"hapi.fhir.mdm_enabled=true"
+})
+class MdmTest {
+	@Autowired
+	INicknameSvc nicknameService;
+
+	@Autowired
+	JpaStorageSettings jpaStorageSettings;
+
+	@Test
+	void testApplicationStartedSuccessfully() {
+		assertThat(nicknameService).isNotNull();
+		assertThat(jpaStorageSettings.getSupportedSubscriptionTypes()).contains(SubscriptionChannelType.MESSAGE);
+	}
+}