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/*
* Copyright (c) 2021, 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 8251496
* @summary Test that UnmodifiableHeaders is in fact immutable
* @modules jdk.httpserver/sun.net.httpserver:+open
* @run testng/othervm UnmodifiableHeadersTest
*/
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.AbstractMap;
import java.util.List;
import java.util.Map;
import com.sun.net.httpserver.Headers;
import com.sun.net.httpserver.HttpContext;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpPrincipal;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import sun.net.httpserver.UnmodifiableHeaders;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertThrows;
public class UnmodifiableHeadersTest {
@Test
public static void testEquality() {
var headers = new Headers();
var unmodifiableHeaders1 = new UnmodifiableHeaders(headers);
assertEquals(unmodifiableHeaders1, headers);
assertEquals(unmodifiableHeaders1.hashCode(), headers.hashCode());
assertEquals(unmodifiableHeaders1.get("Foo"), headers.get("Foo"));
headers.add("Foo", "Bar");
var unmodifiableHeaders2 = new UnmodifiableHeaders(headers);
assertEquals(unmodifiableHeaders2, headers);
assertEquals(unmodifiableHeaders2.hashCode(), headers.hashCode());
assertEquals(unmodifiableHeaders2.get("Foo"), headers.get("Foo"));
}
@DataProvider
public Object[][] headers() {
var headers = new Headers();
headers.add("Foo", "Bar");
var exchange = new TestHttpExchange(headers);
return new Object[][] {
{ exchange.getRequestHeaders() },
{ Headers.of("Foo", "Bar") },
{ Headers.of(Map.of("Foo", List.of("Bar"))) },
};
}
@Test(dataProvider = "headers")
public static void testUnmodifiableHeaders(Headers headers) {
assertUnsupportedOperation(headers);
assertUnmodifiableCollection(headers);
assertUnmodifiableList(headers);
}
static final Class<UnsupportedOperationException> UOP = UnsupportedOperationException.class;
static void assertUnsupportedOperation(Headers headers) {
assertThrows(UOP, () -> headers.add("a", "b"));
assertThrows(UOP, () -> headers.compute("c", (k, v) -> List.of("c")));
assertThrows(UOP, () -> headers.computeIfAbsent("d", k -> List.of("d")));
assertThrows(UOP, () -> headers.computeIfPresent("Foo", (k, v) -> null));
assertThrows(UOP, () -> headers.merge("e", List.of("e"), (k, v) -> List.of("e")));
assertThrows(UOP, () -> headers.put("f", List.of("f")));
assertThrows(UOP, () -> headers.putAll(Map.of()));
assertThrows(UOP, () -> headers.putIfAbsent("g", List.of("g")));
assertThrows(UOP, () -> headers.remove("h"));
assertThrows(UOP, () -> headers.replace("i", List.of("i")));
assertThrows(UOP, () -> headers.replace("j", List.of("j"), List.of("j")));
assertThrows(UOP, () -> headers.replaceAll((k, v) -> List.of("k")));
assertThrows(UOP, () -> headers.set("l", "m"));
assertThrows(UOP, () -> headers.clear());
}
static void assertUnmodifiableCollection(Headers headers) {
var entry = new AbstractMap.SimpleEntry<>("n", List.of("n"));
assertThrows(UOP, () -> headers.values().remove(List.of("Bar")));
assertThrows(UOP, () -> headers.values().removeAll(List.of("Bar")));
assertThrows(UOP, () -> headers.keySet().remove("Foo"));
assertThrows(UOP, () -> headers.keySet().removeAll(List.of("Foo")));
assertThrows(UOP, () -> headers.entrySet().remove(entry));
assertThrows(UOP, () -> headers.entrySet().removeAll(List.of(entry)));
}
static void assertUnmodifiableList(Headers headers) {
assertThrows(UOP, () -> headers.get("Foo").remove(0));
assertThrows(UOP, () -> headers.get("foo").remove(0));
assertThrows(UOP, () -> headers.values().stream().findFirst().orElseThrow().remove(0));
assertThrows(UOP, () -> headers.entrySet().stream().findFirst().orElseThrow().getValue().remove(0));
}
static class TestHttpExchange extends StubHttpExchange {
final UnmodifiableHeaders headers;
TestHttpExchange(Headers headers) {
this.headers = new UnmodifiableHeaders(headers);
}
@Override
public Headers getRequestHeaders() {
return headers;
}
}
static class StubHttpExchange extends HttpExchange {
@Override public Headers getRequestHeaders() { return null; }
@Override public Headers getResponseHeaders() { return null; }
@Override public URI getRequestURI() { return null; }
@Override public String getRequestMethod() { return null; }
@Override public HttpContext getHttpContext() { return null; }
@Override public void close() { }
@Override public InputStream getRequestBody() { return null; }
@Override public OutputStream getResponseBody() { return null; }
@Override public void sendResponseHeaders(int rCode, long responseLength) { }
@Override public InetSocketAddress getRemoteAddress() { return null; }
@Override public int getResponseCode() { return 0; }
@Override public InetSocketAddress getLocalAddress() { return null; }
@Override public String getProtocol() { return null; }
@Override public Object getAttribute(String name) { return null; }
@Override public void setAttribute(String name, Object value) { }
@Override public void setStreams(InputStream i, OutputStream o) { }
@Override public HttpPrincipal getPrincipal() { return null; }
}
}
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