Add test for (now fixed) #231

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -20,6 +20,9 @@ Modules:
 #226: (yaml) Quote 'y'/'Y'/'n'/'N' as names too (to avoid problems with Boolean keys)
  (requested by pnepywoda@github)
 #229: (yaml) Allow configuring the way "must quote" is determined for property names, String values
+#231: Typed object with anchor throws Already had POJO for id (note: actual
+   fix in `jackson-annotations`)
+ (reported by almson@github)
 - Add configurability of "YAML version generator is to follow" via "YAMLFactory.builder()"
 - SnakeYAML 1.26 -> 1.27
 - Add Gradle Module Metadata (https://blog.gradle.org/alignment-with-gradle-module-metadata)

yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/misc/ObjectAndTypeId231Test.java

@@ -0,0 +1,44 @@
+package com.fasterxml.jackson.dataformat.yaml.misc;
+
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.*;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.*;
+
+public class ObjectAndTypeId231Test extends ModuleTestBase
+{
+    static class Container {
+        @JsonProperty
+        public List<Base> list;
+    }
+    
+    @JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
+    @JsonSubTypes({@JsonSubTypes.Type(name="Derived", value=Derived.class)})
+    @JsonIdentityInfo(generator = ObjectIdGenerators.StringIdGenerator.class)
+    static class Base {
+        
+    }
+    
+    static class Derived extends Base {
+        @JsonProperty
+        String a;
+    }
+
+    private final ObjectMapper MAPPER = newObjectMapper();
+
+    // [dataformats-text#231]
+    public void testTypeAndObjectId231() throws Exception
+    {
+        String yaml = "list:\n" +
+                      "    - !Derived &id1\n" +
+                      "        a: foo";
+        Container container = MAPPER.readValue (yaml, Container.class);
+        assertNotNull(container);
+        assertNotNull(container.list);
+        assertEquals(1, container.list.size());
+
+        System.out.println (((Derived)container.list.get(0)).a);
+    }
+}