add tests when delete pupil

Author: Freeongoo

readme.md

@@ -73,4 +73,5 @@ see dir: `/src/test/java/org/example/inheritance/joined`
 
 #### OneToMany by joinColumn
 
-see dir: `/src/test/java/org/example/entity/relations/OneToMany/JoinColumn`
+* Without cascade:  
+see dir: `/src/test/java/org/example/entity/relations/OneToMany/JoinColumn/NotCascade`

src/main/java/org/example/entity/relations/OneToMany/JoinColumn/ClassRoom.java renamed to src/main/java/org/example/entity/relations/OneToMany/JoinColumn/NotCascade/ClassRoom.java

@@ -1,4 +1,4 @@
-package org.example.entity.relations.OneToMany.JoinColumn;
+package org.example.entity.relations.OneToMany.JoinColumn.NotCascade;
 
 import javax.persistence.*;
 import java.util.Collections;

src/main/java/org/example/entity/relations/OneToMany/JoinColumn/Pupil.java renamed to src/main/java/org/example/entity/relations/OneToMany/JoinColumn/NotCascade/Pupil.java

@@ -1,4 +1,4 @@
-package org.example.entity.relations.OneToMany.JoinColumn;
+package org.example.entity.relations.OneToMany.JoinColumn.NotCascade;
 
 import javax.persistence.*;
 

src/main/resources/hibernate.cfg.xml

@@ -42,8 +42,8 @@
         <mapping class="org.example.entity.inheritance.joined.UserJoined" />
 
         <!-- relations joinColumn -->
-        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.ClassRoom" />
-        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.Pupil" />
+        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.NotCascade.ClassRoom" />
+        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.NotCascade.Pupil" />
 
     </session-factory>
 </hibernate-configuration>

src/test/java/org/example/entity/relations/OneToMany/JoinColumn/ClassRoomAndPupilTest.java renamed to src/test/java/org/example/entity/relations/OneToMany/JoinColumn/NotCascade/ClassRoomAndPupilTest.java

@@ -1,4 +1,4 @@
-package org.example.entity.relations.OneToMany.JoinColumn;
+package org.example.entity.relations.OneToMany.JoinColumn.NotCascade;
 
 import org.example.AbstractHibernateTest;
 import org.junit.Test;
@@ -169,6 +169,47 @@ public void save_WhenClassRoomWithPupil_WhenSaveAllEntity_WhenDeleteParent() {
         flushAndClearSession();
     }
 
+    // cannot delete classRoom - not set cascade
+    @Test
+    public void save_WhenClassRoomWithPupil_WhenSaveAllEntity_WhenDeleteOnePupil() {
+        ClassRoom classRoom = new ClassRoom(12, "MyClassRoom");
+
+        Pupil pupil1 = new Pupil("John", 20);
+        pupil1.setClassRoom(classRoom);
+        Pupil pupil2 = new Pupil("Mike", 21);
+        pupil2.setClassRoom(classRoom);
+
+        List<Pupil> pupils = new ArrayList<>();
+        pupils.add(pupil1);
+        pupils.add(pupil2);
+
+        classRoom.setPupils(pupils);
+
+        session.persist(classRoom);
+        session.persist(pupil1);
+        session.persist(pupil2);
+        flushAndClearSession();
+
+        classRoom.getPupils().remove(0);
+        flushAndClearSession();
+
+        // yes - delete from collection :)
+        List<Pupil> pupilsAfterDelete = classRoom.getPupils();
+        assertThat(pupilsAfterDelete.size(), equalTo(1));
+
+        // check count pupil from DB
+        // not change - because not set cascade. add if want to change count pupil:
+        // @OneToMany(mappedBy = "classRoom", cascade = CascadeType.ALL)
+        List<Pupil> allListPupilFromDb = getAllListPupil();
+        assertThat(allListPupilFromDb.size(), equalTo(2));
+
+        printStructureTable("class_room");
+        showContentTable("class_room");
+
+        printStructureTable("pupil");
+        showContentTable("pupil");
+    }
+
     @Test
     public void save_WhenGetClassRoom() {
         ClassRoom classRoom = new ClassRoom(12, "MyClassRoom");

src/test/resources/hibernate.cfg.xml

@@ -38,8 +38,8 @@
         <mapping class="org.example.entity.inheritance.joined.UserJoined" />
 
         <!-- relations joinColumn -->
-        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.ClassRoom" />
-        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.Pupil" />
+        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.NotCascade.ClassRoom" />
+        <mapping class="org.example.entity.relations.OneToMany.JoinColumn.NotCascade.Pupil" />
 
     </session-factory>
 </hibernate-configuration>