/*
 * Copyright (C) 2011 The Guava Authors
 *
 * 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.common.net;

import com.google.common.base.Ascii;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableBiMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;

import junit.framework.TestCase;

import java.lang.reflect.Field;
import java.util.List;

/**
 * Tests for the HttpHeaders class.
 *
 * @author Kurt Alfred Kluever
 */
public class HttpHeadersTest extends TestCase {

  public void testConstantNameMatchesString() throws Exception {
    // Special case some of the weird HTTP Header names...
    ImmutableBiMap<String, String> specialCases = ImmutableBiMap.of("ETAG", "ETag");
    ImmutableSet<String> uppercaseAcronyms = ImmutableSet.of(
        "ID", "DNT", "IP", "MD5", "P3P", "TE", "UID", "URL", "WWW", "XSS");
    assertConstantNameMatchesString(HttpHeaders.class, specialCases, uppercaseAcronyms);
  }

  // Visible for other tests to use
  static void assertConstantNameMatchesString(Class clazz,
      ImmutableBiMap<String, String> specialCases, ImmutableSet<String> uppercaseAcronyms)
      throws IllegalAccessException {
    for (Field field : clazz.getDeclaredFields()) {
      /*
       * Coverage mode generates synthetic fields.  If we ever add private
       * fields, they will cause similar problems, and we may want to switch
       * this check to isAccessible().
       */
      if (!field.isSynthetic()) {
        assertEquals(upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms),
            field.get(null));
      }
    }
  }

  private static final Splitter SPLITTER = Splitter.on('_');
  private static final Joiner JOINER = Joiner.on('-');

  private static String upperToHttpHeaderName(String constantName,
      ImmutableBiMap<String, String> specialCases, ImmutableSet<String> uppercaseAcronyms) {
    if (specialCases.containsKey(constantName)) {
      return specialCases.get(constantName);
    }
    List<String> parts = Lists.newArrayList();
    for (String part : SPLITTER.split(constantName)) {
      if (!uppercaseAcronyms.contains(part)) {
        part = part.charAt(0) + Ascii.toLowerCase(part.substring(1));
      }
      parts.add(part);
    }
    return JOINER.join(parts);
  }
}

@@ -1624,16 +1624,19 @@
 ng(Class
+%3C?%3E
  clazz,%0A
@@ -1787,21 +1787,360 @@
 field : 
-clazz
+relevantFields(clazz)) %7B%0A      assertEquals(upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms),%0A          field.get(null));%0A    %7D%0A  %7D%0A%0A  // Visible for other tests to use%0A  static ImmutableSet%3CField%3E relevantFields(Class%3C?%3E cls) %7B%0A    ImmutableSet.Builder%3CField%3E builder = ImmutableSet.builder();%0A    for (Field field : cls
 .getDecl
@@ -2411,137 +2411,69 @@
     
-assertEquals(upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms),%0A
+builder.add(field);%0A  
     
+%7D%0A
     
+%7D%0A
     
-field.get(null));%0A      %7D%0A    %7D
+return builder.build();
 %0A  %7D

Refactor out some common functionality in the HttpHeadersTest. ------------- Created by MOE: http://code.google.com/p/moe-java MOE_MIGRATED_REVID=43918498