RED-9512: added null check for SMTP password when updating configuration

src/test/java/com/knecon/fforesight/tenantusermanagement/tests/SMTPConfigurationTest.java

@@ -72,4 +72,22 @@ public class SMTPConfigurationTest extends AbstractTenantUserManagementIntegrati
         TenantContext.clear();
     }
 
+
+    @Test
+    public void testSMTPwithoutPassword() {
+        TenantContext.setTenantId(AbstractTenantUserManagementIntegrationTest.TEST_TENANT_ID);
+
+        SMTPConfiguration smtpConfiguration = new SMTPConfiguration();
+        smtpConfiguration.setFrom("from@knecon.com");
+        smtpConfiguration.setHost("test.knecon.com");
+
+        smtpConfigurationClient.updateSMTPConfiguration(smtpConfiguration);
+
+        var current = smtpConfigurationClient.getCurrentSMTPConfiguration();
+
+        assertThat(current.getPassword()).matches("\\**");
+
+        TenantContext.clear();
+    }
+
 }