fix：【framework】数据权限的单测报错问题

yudao-framework/yudao-spring-boot-starter-biz-data-permission/src/main/java/cn/iocoder/yudao/framework/datapermission/core/rule/dept/DeptDataPermissionRule.java

@@ -19,7 +19,6 @@ import lombok.extern.slf4j.Slf4j;
 import net.sf.jsqlparser.expression.Alias;
 import net.sf.jsqlparser.expression.Expression;
 import net.sf.jsqlparser.expression.LongValue;
-import net.sf.jsqlparser.expression.NullValue;
 import net.sf.jsqlparser.expression.operators.conditional.OrExpression;
 import net.sf.jsqlparser.expression.operators.relational.EqualsTo;
 import net.sf.jsqlparser.expression.operators.relational.ExpressionList;
@@ -60,8 +59,6 @@ public class DeptDataPermissionRule implements DataPermissionRule {
     private static final String DEPT_COLUMN_NAME = "dept_id";
     private static final String USER_COLUMN_NAME = "user_id";
 
-    static final Expression EXPRESSION_NULL = new NullValue();
-
     private final PermissionCommonApi permissionApi;
 
     /**

yudao-framework/yudao-spring-boot-starter-biz-data-permission/src/test/java/cn/iocoder/yudao/framework/datapermission/core/rule/dept/DeptDataPermissionRuleTest.java

@@ -19,7 +19,6 @@ import org.mockito.MockedStatic;
 
 import java.util.Map;
 
-import static cn.iocoder.yudao.framework.datapermission.core.rule.dept.DeptDataPermissionRule.EXPRESSION_NULL;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomString;
 import static org.junit.jupiter.api.Assertions.*;
@@ -150,7 +149,7 @@ class DeptDataPermissionRuleTest extends BaseMockitoUnitTest {
             // 调用
             Expression expression = rule.getExpression(tableName, tableAlias);
             // 断言
-            assertSame(EXPRESSION_NULL, expression);
+            assertEquals("null = null", expression.toString());
             assertSame(deptDataPermission, loginUser.getContext(DeptDataPermissionRule.CONTEXT_KEY, DeptDataPermissionRespDTO.class));
         }
     }