Backport test for #5049

Author: cowtowncoder

src/test-jdk17/java/com/fasterxml/jackson/databind/tofix/RecordWithReadOnly5049Test.java

@@ -0,0 +1,60 @@
+package com.fasterxml.jackson.databind.tofix;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
+import com.fasterxml.jackson.databind.testutil.failure.JacksonTestFailureExpected;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class RecordWithReadOnly5049Test extends DatabindTestUtil
+{
+    record ReadOnly5049Record(
+            @JsonProperty(value = "a", access = JsonProperty.Access.READ_ONLY) String a,
+            @JsonProperty(value = "b", access = JsonProperty.Access.READ_ONLY) String b) {
+    }
+
+    static class ReadOnly5049Pojo
+    {
+        protected String a, b;
+
+        ReadOnly5049Pojo(
+            @JsonProperty(value = "a", access = JsonProperty.Access.READ_ONLY) String a,
+            @JsonProperty(value = "b", access = JsonProperty.Access.READ_ONLY) String b) {
+            this.a = a;
+            this.b = b;
+        }
+
+        public String getA() { return a; }
+        public String getB() { return b; }
+    }
+
+    private final ObjectMapper MAPPER = newJsonMapper();
+
+    @Test
+    void testRoundtripPOJO() throws Exception
+    {
+        String json = MAPPER.writeValueAsString(new ReadOnly5049Pojo("hello", "world"));
+        //System.err.println("JSON/pojo: "+json);
+        ReadOnly5049Pojo pojo = MAPPER.readerFor(ReadOnly5049Pojo.class).readValue(json);
+        assertNotNull(pojo);
+        assertNull(pojo.a);
+        assertNull(pojo.b);
+    } 
+
+    @JacksonTestFailureExpected
+    @Test
+    void testRoundtripRecord() throws Exception
+    {
+        // json = MAPPER.writeValueAsString(new ReadOnly5049Record("hello", "world"));
+        String json = "{\"a\":\"hello\",\"b\":\"world\"}";
+        ReadOnly5049Record record = MAPPER.readValue(json, ReadOnly5049Record.class);
+        assertNotNull(record);
+        assertNull(record.a());
+        assertNull(record.b());
+    }
+}