Add more tests for cascade save on tree structure

src/test/java/org/tests/cascade/TestMultiCascadeBatch.java

@@ -3,6 +3,7 @@ package org.tests.cascade;
 import io.ebean.BaseTestCase;
 import io.ebean.Ebean;
 import io.ebean.Transaction;
+import org.ebeantest.LoggedSqlCollector;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -10,6 +11,11 @@ import org.tests.model.site.DataContainer;
 import org.tests.model.site.Site;
 import org.tests.model.site.SiteAddress;
 
+import java.util.Collections;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
 public class TestMultiCascadeBatch extends BaseTestCase {
 
   private Transaction txn;
@@ -26,6 +32,31 @@ public class TestMultiCascadeBatch extends BaseTestCase {
     }
   }
 
+  @Test
+  public void save() {
+
+    Site grandparent = new Site();
+    grandparent.setName("grandparent");
+    Site parent = new Site();
+    parent.setName("parent");
+    Site child = new Site();
+    child.setName("child");
+    grandparent.setChildren(Collections.singletonList(parent));
+    parent.setChildren(Collections.singletonList(child));
+
+    LoggedSqlCollector.start();
+    grandparent.save();
+
+    final List<String> sql = LoggedSqlCollector.stop();
+
+    assertThat(sql).hasSize(5);
+    assertThat(sql.get(0)).contains("insert into site (id, name");
+    assertThat(sql.get(1)).contains("insert into site (id, name");
+    assertSqlBind(sql.get(2));
+    assertThat(sql.get(3)).contains("insert into site (id, name");
+    assertSqlBind(sql.get(4));
+  }
+
   @Test
   public void testMultipleCascadeInsideTransaction() {