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/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 7128648
* @modules jdk.httpserver
* @summary HttpURLConnection.getHeaderFields should return an unmodifiable Map
*/
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.HttpURLConnection;
import java.util.Collection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import com.sun.net.httpserver.Headers;
import static java.net.Proxy.NO_PROXY;
public class UnmodifiableMaps {
void test(String[] args) throws Exception {
HttpServer server = startHttpServer();
try {
InetSocketAddress address = server.getAddress();
URI uri = new URI("http://localhost:" + address.getPort() + "/foo");
doClient(uri);
} finally {
server.stop(0);
}
}
void doClient(URI uri) throws Exception {
HttpURLConnection uc = (HttpURLConnection) uri.toURL().openConnection(NO_PROXY);
// Test1: getRequestProperties is unmodifiable
System.out.println("Check getRequestProperties");
checkUnmodifiable(uc.getRequestProperties());
uc.addRequestProperty("X", "V");
uc.addRequestProperty("X1", "V1");
checkUnmodifiable(uc.getRequestProperties());
int resp = uc.getResponseCode();
check(resp == 200,
"Unexpected response code. Expected 200, got " + resp);
// Test2: getHeaderFields is unmodifiable
System.out.println("Check getHeaderFields");
checkUnmodifiable(uc.getHeaderFields());
// If the implementation does caching, check again.
checkUnmodifiable(uc.getHeaderFields());
}
// HTTP Server
HttpServer startHttpServer() throws IOException {
HttpServer httpServer = HttpServer.create(new InetSocketAddress(0), 0);
httpServer.createContext("/foo", new SimpleHandler());
httpServer.start();
return httpServer;
}
class SimpleHandler implements HttpHandler {
@Override
public void handle(HttpExchange t) throws IOException {
Headers respHeaders = t.getResponseHeaders();
// ensure some response headers, over the usual ones
respHeaders.add("RespHdr1", "Value1");
respHeaders.add("RespHdr2", "Value2");
respHeaders.add("RespHdr3", "Value3");
t.sendResponseHeaders(200, -1);
t.close();
}
}
void checkUnmodifiable(Map<String,List<String>> map) {
checkUnmodifiableMap(map);
// Now check the individual values
Collection<List<String>> values = map.values();
for (List<String> value : values) {
checkUnmodifiableList(value);
}
}
void checkUnmodifiableMap(final Map<String,List<String>> map) {
expectThrow( new Runnable() {
public void run() { map.clear(); }});
expectThrow( new Runnable() {
public void run() { map.put("X", new ArrayList<String>()); }});
expectThrow( new Runnable() {
public void run() { map.remove("X"); }});
}
void checkUnmodifiableList(final List<String> list) {
expectThrow( new Runnable() {
public void run() { list.clear(); }});
expectThrow( new Runnable() {
public void run() { list.add("X"); }});
expectThrow( new Runnable() {
public void run() { list.remove("X"); }});
}
void expectThrow(Runnable r) {
try { r.run(); fail("Excepted UOE to be thrown."); Thread.dumpStack(); }
catch (UnsupportedOperationException e) { pass(); }
}
volatile int passed = 0, failed = 0;
void pass() {passed++;}
void fail() {failed++;}
void fail(String msg) {System.err.println(msg); fail();}
void unexpected(Throwable t) {failed++; t.printStackTrace();}
void check(boolean cond, String failMessage) {if (cond) pass(); else fail(failMessage);}
public static void main(String[] args) throws Throwable {
Class<?> k = new Object(){}.getClass().getEnclosingClass();
try {k.getMethod("instanceMain",String[].class)
.invoke( k.newInstance(), (Object) args);}
catch (Throwable e) {throw e.getCause();}}
public void instanceMain(String[] args) throws Throwable {
try {test(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new AssertionError("Some tests failed");}
}
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