test: add test for issues IBYEZ7

mybatis-flex-core/src/test/java/com/mybatisflex/coretest/UpdateEntityTest.java

@@ -0,0 +1,14 @@
+package com.mybatisflex.coretest;
+
+import com.mybatisflex.core.util.UpdateEntity;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class UpdateEntityTest {
+
+    @Test
+    public void testIssuesIBYEZ7() {
+        Article article = UpdateEntity.of(Article.class, 1);
+        Assert.assertEquals(1, (long) article.getId());
+    }
+}