test relation and view

src/main/java/com/ic/er/bean/entity/RelationshipDO.java

src/main/java/com/ic/er/service/ViewService.java

src/main/resources/mapper/RelationshipMapper.xml

src/main/resources/mapper/ViewMapper.xml

src/test/java/com/ic/er/testRelationMapper.java

src/test/java/com/ic/er/testViewMapper.java

target/classes/mapper/RelationshipMapper.xml

target/classes/mapper/ViewMapper.xml