Add failing test for #4607

src/test/java/com/fasterxml/jackson/failing/TypeId4607Test.java

@@ -0,0 +1,47 @@
+package com.fasterxml.jackson.failing;
+
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonIdentityInfo;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.ObjectIdGenerators;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static com.fasterxml.jackson.databind.BaseMapTest.newJsonMapper;
+
+public class TypeId4607Test {
+
+    @JsonIdentityInfo(generator = ObjectIdGenerators.StringIdGenerator.class)
+    @JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
+    @JsonSubTypes({
+            @JsonSubTypes.Type(value = EnumTypeDefinition.class, name = "enum"),
+            @JsonSubTypes.Type(value = NumberTypeDefinition.class, name = "number")
+    })
+    interface TypeDefinition {
+    }
+
+    static class EnumTypeDefinition implements TypeDefinition {
+        public List<String> values;
+    }
+
+    static class NumberTypeDefinition implements TypeDefinition {
+    }
+
+    private static final ObjectMapper mapper = newJsonMapper();
+
+    @Test
+    public void shouldHandleTypeDefinitionJson() throws Exception {
+        String input = "{" +
+                "        \"@type\": \"number\"   " +
+                "      }";
+
+        TypeDefinition model = mapper.readValue(input, TypeDefinition.class);
+
+        Assertions.assertInstanceOf(NumberTypeDefinition.class, model);
+    }
+}
+