Add failing test for #4690

src/test-jdk17/java/com/fasterxml/jackson/failing/DuplicatePropertyDeserializationRecord4690Test.java

@@ -0,0 +1,30 @@
+package com.fasterxml.jackson.failing;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+// [databind#4690] InvalidDefinitionException "No fallback setter/field defined for creator property"
+// when deserializing JSON with duplicated property to single-property Record
+public class DuplicatePropertyDeserializationRecord4690Test
+        extends DatabindTestUtil
+{
+
+    record MyRecord(String first) { }
+
+    private final ObjectMapper mapper = newJsonMapper();
+
+    @Test
+    void testDuplicatePropertyDeserialization() throws Exception {
+        final String json = a2q("{'first':'value','first':'value2'}");
+
+        MyRecord result = mapper.readValue(json, MyRecord.class);
+
+        assertNotNull(result);
+        assertEquals("value2", result.first());
+    }
+
+}