diff --git a/src/test/java/net/hostsharing/hsadminng/hs/office/migration/ImportOfficeTables.java b/src/test/java/net/hostsharing/hsadminng/hs/office/migration/ImportOfficeTables.java
index ac221907..ff7273e8 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/office/migration/ImportOfficeTables.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/office/migration/ImportOfficeTables.java
@@ -87,12 +87,28 @@ public class ImportOfficeTables extends ContextBasedTest {
             throw new RuntimeException(e);
         }
 
-        // no sensible content without contacts, thus just checking counts
-        assertThat(partners.size()).isEqualTo(3);
-        assertThat(contacts.size()).isEqualTo(0);
-        assertThat(persons.size()).isEqualTo(3);
-        assertThat(debitors.size()).isEqualTo(3);
-        assertThat(memberships.size()).isEqualTo(3);
+        // no contacts yet => mostly null values
+        assertThat(partners.toString()).isEqualToIgnoringWhitespace("""
+            {
+                 7=partner(null, null: null),
+                10=partner(null, null: null),
+                12=partner(null, null: null)
+            }
+            """);
+        assertThat(contacts.toString()).isEqualTo("{}");
+        assertThat(debitors.toString()).isEqualToIgnoringWhitespace("""
+            {
+                 7=debitor(10007: null, null),
+                10=debitor(10010: null, null),
+                12=debitor(11012: null, null)}
+            """);
+        assertThat(memberships.toString()).isEqualToIgnoringWhitespace("""
+            {
+                 7=Membership(10007, null, null, 10007, [2000-12-06,), NONE),
+                10=Membership(10010, null, null, 10010, [2000-12-06,2016-01-01), UNKNOWN), 
+                12=Membership(11012, null, null, 11012, [2021-04-01,), NONE)
+            }
+            """);
     }
 
     @Test
@@ -118,7 +134,7 @@ public class ImportOfficeTables extends ContextBasedTest {
                     101=contact(label='Frau Dr. Jenny Meyer , JM e.K.', emailAddresses='jm@example.org'), 
                     102=contact(label='Herr Andrew Meyer , JM e.K.', emailAddresses='am@example.org'), 
                      71=contact(label='Herr Michael Mellies ', emailAddresses='mih@example.org'), 
-                     121=contact(label='Paule Schmidt , Test PS', emailAddresses='ps@example.com')
+                    121=contact(label='Paule Schmidt , Test PS', emailAddresses='ps@example.com')
                  }
                 """);
         assertThat(persons.toString()).isEqualToIgnoringWhitespace("""