Fix for #149 - OneToMany with nested ManyToMany deletion bug

src/test/java/com/avaje/tests/m2m/TestM2mDeleteObject.java

@@ -0,0 +1,71 @@
+package com.avaje.tests.m2m;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.Ebean;
+import com.avaje.tests.model.m2m.Permission;
+import com.avaje.tests.model.m2m.Role;
+import com.avaje.tests.model.m2m.Tenant;
+
+public class TestM2mDeleteObject extends BaseTestCase {
+
+  @Test
+  public void test() {
+
+    Ebean.createUpdate(Permission.class, "delete from Permission").execute();
+    Ebean.createUpdate(Tenant.class, "delete from Tenant").execute();
+    Ebean.createUpdate(Role.class, "delete from Role").execute();
+
+    Tenant t = new Tenant();
+    t.setName("tenant");
+
+    Ebean.save(t);
+
+    Permission p1 = new Permission();
+    Permission p2 = new Permission();
+
+    p1.setName("p1");
+    p2.setName("p2");
+
+    Ebean.save(p1);
+
+    Ebean.save(p2);
+
+    Role role1 = new Role();
+    role1.setName("role");
+    role1.setTenant(t);
+
+    Set<Permission> permissions = new HashSet<Permission>();
+    List<Permission> permsList = Ebean.find(Permission.class).findList();
+    permissions.addAll(permsList);
+
+    role1.setPermissions(permissions);
+
+    Ebean.save(role1);
+
+    List<Tenant> tenantList = Ebean.find(Tenant.class).fetch("roles").findList();
+    List<Role> roleList = Ebean.find(Role.class).fetch("permissions").findList();
+    List<Permission> permissionList = Ebean.find(Permission.class).fetch("roles").findList();
+
+    Assert.assertEquals(1, tenantList.size());
+    Assert.assertEquals(2, permissionList.size());
+    Assert.assertEquals(1, roleList.size());
+
+    Ebean.delete(role1);
+
+    List<Tenant> tenantList2 = Ebean.find(Tenant.class).fetch("roles").findList();
+    List<Role> roleList2 = Ebean.find(Role.class).fetch("permissions").findList();
+    List<Permission> permissionList2 = Ebean.find(Permission.class).fetch("roles").findList();
+
+    Assert.assertEquals(0, roleList2.size());
+    Assert.assertEquals(1, tenantList2.size());
+    Assert.assertEquals(2, permissionList2.size());
+  }
+
+}