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diff --git a/gson/src/test/java/com/google/gson/functional/FieldNamingTest.java b/gson/src/test/java/com/google/gson/functional/FieldNamingTest.java
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+/*
+ * Copyright (C) 2011 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 static com.google.gson.FieldNamingPolicy.IDENTITY;
+import static com.google.gson.FieldNamingPolicy.LOWER_CASE_WITH_DASHES;
+import static com.google.gson.FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES;
+import static com.google.gson.FieldNamingPolicy.UPPER_CAMEL_CASE;
+import static com.google.gson.FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES;
+
+import com.google.gson.FieldNamingPolicy;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.annotations.SerializedName;
+import junit.framework.TestCase;
+
+public final class FieldNamingTest extends TestCase {
+  public void testIdentity() {
+    Gson gson = getGsonWithNamingPolicy(IDENTITY);
+    assertEquals("{'lowerCamel':1,'UpperCamel':2,'_lowerCamelLeadingUnderscore':3," +
+        "'_UpperCamelLeadingUnderscore':4,'lower_words':5,'UPPER_WORDS':6," +
+        "'annotatedName':7,'lowerId':8}",
+        gson.toJson(new TestNames()).replace('\"', '\''));
+  }
+
+  public void testUpperCamelCase() {
+    Gson gson = getGsonWithNamingPolicy(UPPER_CAMEL_CASE);
+    assertEquals("{'LowerCamel':1,'UpperCamel':2,'_LowerCamelLeadingUnderscore':3," +
+        "'_UpperCamelLeadingUnderscore':4,'Lower_words':5,'UPPER_WORDS':6," +
+        "'annotatedName':7,'LowerId':8}",
+        gson.toJson(new TestNames()).replace('\"', '\''));
+  }
+
+  public void testUpperCamelCaseWithSpaces() {
+    Gson gson = getGsonWithNamingPolicy(UPPER_CAMEL_CASE_WITH_SPACES);
+    assertEquals("{'Lower Camel':1,'Upper Camel':2,'_Lower Camel Leading Underscore':3," +
+        "'_ Upper Camel Leading Underscore':4,'Lower_words':5,'U P P E R_ W O R D S':6," +
+        "'annotatedName':7,'Lower Id':8}",
+        gson.toJson(new TestNames()).replace('\"', '\''));
+  }
+
+  public void testLowerCaseWithUnderscores() {
+    Gson gson = getGsonWithNamingPolicy(LOWER_CASE_WITH_UNDERSCORES);
+    assertEquals("{'lower_camel':1,'upper_camel':2,'_lower_camel_leading_underscore':3," +
+        "'__upper_camel_leading_underscore':4,'lower_words':5,'u_p_p_e_r__w_o_r_d_s':6," +
+        "'annotatedName':7,'lower_id':8}",
+        gson.toJson(new TestNames()).replace('\"', '\''));
+  }
+
+  public void testLowerCaseWithDashes() {
+    Gson gson = getGsonWithNamingPolicy(LOWER_CASE_WITH_DASHES);
+    assertEquals("{'lower-camel':1,'upper-camel':2,'_lower-camel-leading-underscore':3," +
+        "'_-upper-camel-leading-underscore':4,'lower_words':5,'u-p-p-e-r_-w-o-r-d-s':6," +
+        "'annotatedName':7,'lower-id':8}",
+        gson.toJson(new TestNames()).replace('\"', '\''));
+  }
+
+  private Gson getGsonWithNamingPolicy(FieldNamingPolicy fieldNamingPolicy){
+    return new GsonBuilder()
+      .setFieldNamingPolicy(fieldNamingPolicy)
+        .create();
+  }
+
+  @SuppressWarnings("unused") // fields are used reflectively
+  private static class TestNames {
+    int lowerCamel = 1;
+    int UpperCamel = 2;
+    int _lowerCamelLeadingUnderscore = 3;
+    int _UpperCamelLeadingUnderscore = 4;
+    int lower_words = 5;
+    int UPPER_WORDS = 6;
+    @SerializedName("annotatedName") int annotated = 7;
+    int lowerId = 8;
+  }
+}