diff --git a/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTest.java b/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTest.java
index f958f8bce..851cb1a4d 100644
--- a/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTest.java
+++ b/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTest.java
@@ -23,6 +23,11 @@ public class NonDefaulConstructorTest {
             assertEquals(1001, vo.id);
             assertEquals("bill", vo.name);
         }
+        {
+            VO vo = objectReader.readObject(JSONReader.of("{'id':1001,'name':'bill'}"), 0);
+            assertEquals(1001, vo.id);
+            assertEquals("bill", vo.name);
+        }
         {
             Map map = new LinkedHashMap<>();
             map.put("id", 1001);
@@ -35,6 +40,22 @@ public class NonDefaulConstructorTest {
         }
     }
 
+    @Test
+    public void testBuild_1() throws Exception {
+        {
+            String str = "{\"id\":1001,\"name\":\"bill\"}";
+            VO vo = JSON.parseObject(str, VO.class);
+            assertEquals(1001, vo.id);
+            assertEquals("bill", vo.name);
+        }
+        {
+            String str = "{'id':1001,'name':'bill'}";
+            VO vo = JSON.parseObject(str, VO.class);
+            assertEquals(1001, vo.id);
+            assertEquals("bill", vo.name);
+        }
+    }
+
     @Test
     public void testBuild_2() throws Exception {
         String str = JSONObject
diff --git a/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTestTest2.java b/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTestTest2.java
index 87793c069..ed456ac5b 100644
--- a/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTestTest2.java
+++ b/core/src/test/java/com/alibaba/fastjson2/codec/NonDefaulConstructorTestTest2.java
@@ -3,6 +3,7 @@ package com.alibaba.fastjson2.codec;
 import com.alibaba.fastjson2.JSON;
 import com.alibaba.fastjson2.JSONB;
 import com.alibaba.fastjson2.JSONObject;
+import com.alibaba.fastjson2.JSONWriter;
 import org.junit.jupiter.api.Test;
 
 import java.math.BigDecimal;
@@ -35,6 +36,13 @@ public class NonDefaulConstructorTestTest2 {
         assertEquals(3, a.id);
     }
 
+    @Test
+    public void test_ab_1() {
+        String str = JSONObject.of("id", 3).fluentPut("name", "DataWorks").toString(JSONWriter.Feature.UseSingleQuotes);
+        B a = JSON.parseObject(str, B.class);
+        assertEquals(3, a.id);
+    }
+
     public static class A {
         private BigDecimal amount;
         private Currency currency;