Test demonstrating Issue jsog#15

src/test/java/com/voodoodyne/jackson/jsog/Issue15Test.java

@@ -0,0 +1,62 @@
+package com.voodoodyne.jackson.jsog;
+
+import com.fasterxml.jackson.annotation.JsonIdentityInfo;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import org.testng.annotations.Test;
+
+
+import java.io.IOException;
+import java.util.Date;
+
+/**
+ * Demonstrates the inability to round trip serialize deserialize when using DefaultTyping.NON_FINAL,
+ * and version fixes for NON_CONCRETE strategies.
+ */
+public class Issue15Test {
+
+  @Test // always works
+  public void testIssue5WorkaroundObject() throws IOException {
+    testWithPolymorphicStrategy(ObjectMapper.DefaultTyping.JAVA_LANG_OBJECT);
+
+  }
+  @Test(enabled = false) // works with Jackson 2.5.4+
+  public void testIssue5WorkaroundObjectAndNonConcrete() throws IOException {
+    testWithPolymorphicStrategy(ObjectMapper.DefaultTyping.OBJECT_AND_NON_CONCRETE);
+
+  }
+  @Test(enabled = false) // works with Jackson 2.5.4+
+  public void testIssue5WorkaroundNonConcreteAndArrays() throws IOException {
+    testWithPolymorphicStrategy(ObjectMapper.DefaultTyping.NON_CONCRETE_AND_ARRAYS);
+
+  }
+  @Test(enabled = false) // fails on Jackson 2.8.8 (no working version as of this date)
+  public void testIssue5WorkaroundNonFinal() throws IOException {
+    testWithPolymorphicStrategy(ObjectMapper.DefaultTyping.NON_FINAL);
+  }
+
+  private void testWithPolymorphicStrategy(ObjectMapper.DefaultTyping typingStragegy) throws IOException {
+    Thing t = new Thing();
+    t.setName("foo");
+
+    t.setDate(new Date());
+
+    ObjectMapper mapper = new ObjectMapper();
+    mapper.enableDefaultTyping(typingStragegy);
+
+    // issue is JSOG specific since removing this line causes all tests to
+    // pass in 2.5.4 (did not test earlier)
+    mapper.addMixIn(Object.class, JSOGMixin.class);
+
+    // No difference if we use the module workaround from Issue #5
+
+//    SimpleModule jModule = new SimpleModule();
+//    jModule.setMixInAnnotation(Object.class, JSOGMixin.class);
+//    mapper.registerModule(jModule);
+
+    String json = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(t);
+    mapper.readValue(json, Thing.class);
+  }
+
+  @JsonIdentityInfo(generator = JSOGGenerator.class) private static class JSOGMixin {}
+}

src/test/java/com/voodoodyne/jackson/jsog/Thing.java

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+package com.voodoodyne.jackson.jsog;
+
+import java.util.Date;
+
+public class Thing {
+  private String name;
+  private Date date;
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public Date getDate() {
+    return date;
+  }
+
+  public void setDate(Date date) {
+    this.date = date;
+  }
+}