#1397 - @DbForeignKey(noConstraint = true) is ignored on @ManyToMany ... foreign constraints still added

src/test/java/org/tests/ddl/TestForeignKeyModes.java

@@ -48,6 +48,40 @@ public class TestForeignKeyModes extends BaseTestCase {
     assertThat(found.getOne()).isNotNull();
   }
 
+  @Test
+  public void noneViaManyToMany() {
+
+    DfkOne one = Ebean.getReference(DfkOne.class, 999L);
+
+    DfkNoneViaMtoM none = new DfkNoneViaMtoM("none2");
+    none.getOnes().add(one);
+
+    // Would normally fail as DfkOne id:999 is not actually in Database
+    // and with the foreign key constraint on the intersection table the
+    // insert into the intersection table would fail
+    Ebean.save(none);
+
+    DfkNoneViaMtoM found = Ebean.find(DfkNoneViaMtoM.class)
+      .setId(none.getId())
+      .fetch("ones", "id")
+      .findOne();
+
+    assertThat(found).isNotNull();
+
+    // but we can't actually fetch it via ORM M2M ... as it joins across
+    // to DfkOne and that doesn't exist
+    assertThat(found.getOnes()).isNotNull();
+    assertThat(found.getOnes()).hasSize(0);
+
+    LoggedSqlCollector.start();
+    Ebean.delete(none);
+
+    List<String> sql = LoggedSqlCollector.stop();
+    assertThat(sql).hasSize(2);
+    assertThat(sql.get(0)).contains("delete from dfk_none_via_mto_m_dfk_one where dfk_none_via_mto_m_id = ?");
+    assertThat(sql.get(1)).contains("delete from dfk_none_via_mto_m where id=?");
+  }
+
   @Test
   public void setNullOnDelete() {
 
@@ -63,7 +97,6 @@ public class TestForeignKeyModes extends BaseTestCase {
     DfkSetNull found = Ebean.find(DfkSetNull.class, other.getId());
     assertThat(found).isNotNull();
     assertThat(found.getOne()).isNull();
-
   }
 
   @Test