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/*
* 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 java.lang.reflect.Field;
import java.util.List;
import junit.framework.TestCase;
/**
* 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.<String, String>builder()
.put("CDN_LOOP", "CDN-Loop")
.put("ETAG", "ETag")
.put("SOURCE_MAP", "SourceMap")
.put("SEC_CH_UA_WOW64", "Sec-CH-UA-WoW64")
.put("SEC_WEBSOCKET_ACCEPT", "Sec-WebSocket-Accept")
.put("SEC_WEBSOCKET_EXTENSIONS", "Sec-WebSocket-Extensions")
.put("SEC_WEBSOCKET_KEY", "Sec-WebSocket-Key")
.put("SEC_WEBSOCKET_PROTOCOL", "Sec-WebSocket-Protocol")
.put("SEC_WEBSOCKET_VERSION", "Sec-WebSocket-Version")
.put("X_WEBKIT_CSP", "X-WebKit-CSP")
.put("X_WEBKIT_CSP_REPORT_ONLY", "X-WebKit-CSP-Report-Only")
.buildOrThrow();
ImmutableSet<String> uppercaseAcronyms =
ImmutableSet.of(
"CH", "ID", "DNT", "DNS", "DPR", "ECT", "HTTP2", "IP", "MD5", "P3P", "RTT", "TE", "UA",
"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 : relevantFields(clazz)) {
assertEquals(
upperToHttpHeaderName(field.getName(), specialCases, uppercaseAcronyms), field.get(null));
}
}
// Visible for other tests to use
static ImmutableSet<Field> relevantFields(Class<?> cls) {
ImmutableSet.Builder<Field> builder = ImmutableSet.builder();
for (Field field : cls.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() && field.getType() == String.class) {
builder.add(field);
}
}
return builder.build();
}
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);
}
}
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