OO-3698: wait a little for too fast servers (patch D. Haag)

src/test/java/org/olat/core/commons/services/license/manager/LicenseTypeDAOTest.java

@@ -113,6 +113,9 @@ public class LicenseTypeDAOTest extends OlatTestCase {
 		assertThat(licenseType.getCreationDate()).isNotNull();
 		assertThat(licenseType.getLastModified()).isNotNull();
 		
+		// small delay to be sure the modification time actually differs from the creation date
+		sleep(100);
+
 		// update
 		licenseType = licenseTypeDao.save(licenseType);
 		dbInstance.commitAndCloseSession();