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diff --git a/gson/src/test/java/com/google/gson/functional/NamingPolicyTest.java b/gson/src/test/java/com/google/gson/functional/NamingPolicyTest.java
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+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson.functional;
+
+import com.google.gson.FieldNamingPolicy;
+import com.google.gson.FieldNamingStrategy;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.common.TestTypes.ClassWithSerializedNameFields;
+import com.google.gson.common.TestTypes.StringWrapper;
+
+import junit.framework.TestCase;
+
+import java.lang.reflect.Field;
+
+/**
+ * Functional tests for naming policies.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public class NamingPolicyTest extends TestCase {
+  private GsonBuilder builder;
+
+  @Override
+  protected void setUp() throws Exception {
+    super.setUp();
+    builder = new GsonBuilder();
+  }
+
+  public void testGsonWithNonDefaultFieldNamingPolicySerialization() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE).create();
+    StringWrapper target = new StringWrapper("blah");
+    assertEquals("{\"SomeConstantStringInstanceField\":\""
+        + target.someConstantStringInstanceField + "\"}", gson.toJson(target));
+  }
+
+  public void testGsonWithNonDefaultFieldNamingPolicyDeserialiation() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE).create();
+    String target = "{\"SomeConstantStringInstanceField\":\"someValue\"}";
+    StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class);
+    assertEquals("someValue", deserializedObject.someConstantStringInstanceField);
+  }
+
+  public void testGsonWithLowerCaseDashPolicySerialization() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES).create();
+    StringWrapper target = new StringWrapper("blah");
+    assertEquals("{\"some-constant-string-instance-field\":\""
+        + target.someConstantStringInstanceField + "\"}", gson.toJson(target));
+  }
+
+  public void testGsonWithLowerCaseDashPolicyDeserialiation() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES).create();
+    String target = "{\"some-constant-string-instance-field\":\"someValue\"}";
+    StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class);
+    assertEquals("someValue", deserializedObject.someConstantStringInstanceField);
+  }
+
+  public void testGsonWithLowerCaseUnderscorePolicySerialization() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
+        .create();
+    StringWrapper target = new StringWrapper("blah");
+    assertEquals("{\"some_constant_string_instance_field\":\""
+        + target.someConstantStringInstanceField + "\"}", gson.toJson(target));
+  }
+
+  public void testGsonWithLowerCaseUnderscorePolicyDeserialiation() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
+        .create();
+    String target = "{\"some_constant_string_instance_field\":\"someValue\"}";
+    StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class);
+    assertEquals("someValue", deserializedObject.someConstantStringInstanceField);
+  }
+
+  public void testGsonWithSerializedNameFieldNamingPolicySerialization() {
+    Gson gson = builder.create();
+    ClassWithSerializedNameFields expected = new ClassWithSerializedNameFields(5, 6);
+    String actual = gson.toJson(expected);
+    assertEquals(expected.getExpectedJson(), actual);
+  }
+
+  public void testGsonWithSerializedNameFieldNamingPolicyDeserialization() {
+    Gson gson = builder.create();
+    ClassWithSerializedNameFields expected = new ClassWithSerializedNameFields(5, 7);
+    ClassWithSerializedNameFields actual =
+        gson.fromJson(expected.getExpectedJson(), ClassWithSerializedNameFields.class);
+    assertEquals(expected.f, actual.f);
+  }
+
+  public void testGsonDuplicateNameUsingSerializedNameFieldNamingPolicySerialization() {
+    Gson gson = builder.create();
+    try {
+      ClassWithDuplicateFields target = new ClassWithDuplicateFields(10);
+      gson.toJson(target);
+      fail();
+    } catch (IllegalArgumentException expected) {
+    }
+  }
+
+  public void testGsonWithUpperCamelCaseSpacesPolicySerialiation() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES)
+        .create();
+    StringWrapper target = new StringWrapper("blah");
+    assertEquals("{\"Some Constant String Instance Field\":\""
+        + target.someConstantStringInstanceField + "\"}", gson.toJson(target));
+  }
+
+  public void testGsonWithUpperCamelCaseSpacesPolicyDeserialiation() {
+    Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES)
+        .create();
+    String target = "{\"Some Constant String Instance Field\":\"someValue\"}";
+    StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class);
+    assertEquals("someValue", deserializedObject.someConstantStringInstanceField);
+  }
+
+  public void testDeprecatedNamingStrategy() throws Exception {
+    Gson gson = builder.setFieldNamingStrategy(new UpperCaseNamingStrategy()).create();
+    ClassWithDuplicateFields target = new ClassWithDuplicateFields(10);
+    String actual = gson.toJson(target);
+    assertEquals("{\"A\":10}", actual);
+  }
+
+  public void testComplexFieldNameStrategy() throws Exception {
+    Gson gson = new Gson();
+    String json = gson.toJson(new ClassWithComplexFieldName(10));
+    String escapedFieldName = "@value\\\"_s$\\\\";
+    assertEquals("{\"" + escapedFieldName + "\":10}", json);
+
+    ClassWithComplexFieldName obj = gson.fromJson(json, ClassWithComplexFieldName.class);
+    assertEquals(10, obj.value);
+  }
+
+  /** http://code.google.com/p/google-gson/issues/detail?id=349 */
+  public void testAtSignInSerializedName() {
+    assertEquals("{\"@foo\":\"bar\"}", new Gson().toJson(new AtName()));
+  }
+
+  static class AtName {
+    @SerializedName("@foo") String f = "bar";
+  }
+
+  private static class UpperCaseNamingStrategy implements FieldNamingStrategy {
+    public String translateName(Field f) {
+      return f.getName().toUpperCase();
+    }
+  }
+
+  @SuppressWarnings("unused")
+  private static class ClassWithDuplicateFields {
+    public Integer a;
+    @SerializedName("a") public Double b;
+
+    public ClassWithDuplicateFields(Integer a) {
+      this(a, null);
+    }
+
+    public ClassWithDuplicateFields(Double b) {
+      this(null, b);
+    }
+
+    public ClassWithDuplicateFields(Integer a, Double b) {
+      this.a = a;
+      this.b = b;
+    }
+  }
+
+  private static class ClassWithComplexFieldName {
+    @SerializedName("@value\"_s$\\") public final long value;
+
+    ClassWithComplexFieldName(long value) {
+      this.value = value;
+    }
+  }
+}