Added failing test for JsonIgnoreType with MixIn

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

@@ -0,0 +1,71 @@
+package com.fasterxml.jackson.failing;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreType;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.test.BaseTest;
+
+public class TestJsonIgnoreTypeWithMixIn extends BaseTest {
+
+    @JsonIgnoreType
+    static class Person {
+
+        private String name;
+        private String address;
+
+        public Person(String name, String address) {
+            this.name = name;
+            this.address = address;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public void setName(String name) {
+            this.name = name;
+        }
+
+        public String getAddress() {
+            return address;
+        }
+
+        public void setAddress(String address) {
+            this.address = address;
+        }
+    }
+
+    @JsonIgnoreType
+    static abstract class PersonMixin {
+
+        @JsonProperty abstract String getName();
+    }
+
+    public void testSingle() throws Exception {
+        SimpleModule module = new SimpleModule();
+        module.setMixInAnnotation(Person.class, PersonMixin.class);
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(module);
+        Person person = new Person("Person 1", "Address 1");
+        String json = mapper.writeValueAsString(person);
+        assertEquals("{\"name\":\"Person 1\"}", json);
+    }
+
+    public void testList() throws Exception {
+        SimpleModule module = new SimpleModule();
+        module.setMixInAnnotation(Person.class, PersonMixin.class);
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(module);
+        Person p1 = new Person("Person 1", "Address 1");
+        Person p2 = new Person("Person 2", "Address 2");
+        List<Person> persons = new ArrayList<Person>();
+        persons.add(p1);
+        persons.add(p2);
+        String json = mapper.writeValueAsString(persons);
+        assertEquals("{\"name\":\"Person 1\"},\"name\":\"Person 2\"}", json);
+    }
+}