Add unit test to try to reproduce [JACKSON-888]

src/test/org/codehaus/jackson/map/deser/TestJdkTypes.java

diff --git a/src/test/org/codehaus/jackson/map/deser/TestJdkTypes.java b/src/test/org/codehaus/jackson/map/deser/TestJdkTypes.java
index 447a377..b83beb9 100644
--- a/src/test/org/codehaus/jackson/map/deser/TestJdkTypes.java
+++ b/src/test/org/codehaus/jackson/map/deser/TestJdkTypes.java
@@ -219,7 +219,6 @@
     // [JACKSON-597]
     public void testClass() throws IOException
     {
-        ObjectMapper mapper = new ObjectMapper();
         assertSame(String.class, mapper.readValue(quote("java.lang.String"), Class.class));
 
         // then primitive types
@@ -325,4 +324,24 @@
         Charset UTF8 = Charset.forName("UTF-8");
         assertSame(UTF8, mapper.readValue(quote("UTF-8"), Charset.class));
     }
+
+    // [JACKSON-888]
+    public void testStackTraceElement() throws Exception
+    {
+        StackTraceElement elem = null;
+        try {
+            throw new IllegalStateException();
+        } catch (Exception e) {
+            elem = e.getStackTrace()[0];
+        }
+        String json = mapper.writeValueAsString(elem);
+        StackTraceElement back = mapper.readValue(json, StackTraceElement.class);
+        
+        assertEquals("testStackTraceElement", back.getMethodName());
+        assertEquals(elem.getLineNumber(), back.getLineNumber());
+        assertEquals(elem.getClassName(), back.getClassName());
+        assertEquals(elem.isNativeMethod(), back.isNativeMethod());
+        assertTrue(back.getClassName().endsWith("TestJdkTypes"));
+        assertFalse(back.isNativeMethod());
+    }
 }