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Java example source code file (DefaultHttp2HeadersTest.java)

This example Java source code file (DefaultHttp2HeadersTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

all, charsequence, defaulthttp2headers, defaulthttp2headerstest, entry, foo, get, http2headers, post, pseudo, pseudoheadername, test

The DefaultHttp2HeadersTest.java Java example source code

/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project licenses this file to you 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 io.netty.handler.codec.http2;

import io.netty.handler.codec.http2.Http2Headers.PseudoHeaderName;
import io.netty.util.internal.StringUtil;
import org.junit.Test;

import java.util.Map.Entry;

import static io.netty.util.AsciiString.of;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

public class DefaultHttp2HeadersTest {

    @Test(expected = Http2Exception.class)
    public void nullHeaderNameNotAllowed() {
        new DefaultHttp2Headers().add(null, "foo");
    }

    @Test(expected = Http2Exception.class)
    public void emtpyHeaderNameNotAllowed() {
        new DefaultHttp2Headers().add(StringUtil.EMPTY_STRING, "foo");
    }

    @Test
    public void testPseudoHeadersMustComeFirstWhenIterating() {
        Http2Headers headers = newHeaders();

        verifyPseudoHeadersFirst(headers);
        verifyAllPseudoHeadersPresent(headers);
    }

    @Test
    public void testPseudoHeadersWithRemovePreservesPseudoIterationOrder() {
        Http2Headers headers = newHeaders();

        Http2Headers nonPseudoHeaders = new DefaultHttp2Headers();
        for (Entry<CharSequence, CharSequence> entry : headers) {
            if (entry.getKey().length() == 0 || entry.getKey().charAt(0) != ':' &&
                !nonPseudoHeaders.contains(entry.getKey())) {
                nonPseudoHeaders.add(entry.getKey(), entry.getValue());
            }
        }

        assertFalse(nonPseudoHeaders.isEmpty());

        // Remove all the non-pseudo headers and verify
        for (Entry<CharSequence, CharSequence> nonPseudoHeaderEntry : nonPseudoHeaders) {
            assertTrue(headers.remove(nonPseudoHeaderEntry.getKey()));
            verifyPseudoHeadersFirst(headers);
            verifyAllPseudoHeadersPresent(headers);
        }

        // Add back all non-pseudo headers
        for (Entry<CharSequence, CharSequence> nonPseudoHeaderEntry : nonPseudoHeaders) {
            headers.add(nonPseudoHeaderEntry.getKey(), of("goo"));
            verifyPseudoHeadersFirst(headers);
            verifyAllPseudoHeadersPresent(headers);
        }
    }

    @Test
    public void testPseudoHeadersWithClearDoesNotLeak() {
        Http2Headers headers = newHeaders();

        assertFalse(headers.isEmpty());
        headers.clear();
        assertTrue(headers.isEmpty());

        // Combine 2 headers together, make sure pseudo headers stay up front.
        headers.add("name1", "value1").scheme("nothing");
        verifyPseudoHeadersFirst(headers);

        Http2Headers other = new DefaultHttp2Headers().add("name2", "value2").authority("foo");
        verifyPseudoHeadersFirst(other);

        headers.add(other);
        verifyPseudoHeadersFirst(headers);

        // Make sure the headers are what we expect them to be, and no leaking behind the scenes.
        assertEquals(4, headers.size());
        assertEquals("value1", headers.get("name1"));
        assertEquals("value2", headers.get("name2"));
        assertEquals("nothing", headers.scheme());
        assertEquals("foo", headers.authority());
    }

    @Test
    public void testSetHeadersOrdersPsuedoHeadersCorrectly() {
        Http2Headers headers = newHeaders();
        Http2Headers other = new DefaultHttp2Headers().add("name2", "value2").authority("foo");

        headers.set(other);
        verifyPseudoHeadersFirst(headers);
        assertEquals(other.size(), headers.size());
        assertEquals("foo", headers.authority());
        assertEquals("value2", headers.get("name2"));
    }

    @Test
    public void testSetAllOrdersPsuedoHeadersCorrectly() {
        Http2Headers headers = newHeaders();
        Http2Headers other = new DefaultHttp2Headers().add("name2", "value2").authority("foo");

        int headersSizeBefore = headers.size();
        headers.setAll(other);
        verifyPseudoHeadersFirst(headers);
        verifyAllPseudoHeadersPresent(headers);
        assertEquals(headersSizeBefore + 1, headers.size());
        assertEquals("foo", headers.authority());
        assertEquals("value2", headers.get("name2"));
    }

    @Test(expected = Http2Exception.class)
    public void testHeaderNameValidation() {
        Http2Headers headers = newHeaders();

        headers.add(of("Foo"), of("foo"));
    }

    @Test
    public void testClearResetsPseudoHeaderDivision() {
        DefaultHttp2Headers http2Headers = new DefaultHttp2Headers();
        http2Headers.method("POST");
        http2Headers.set("some", "value");
        http2Headers.clear();
        http2Headers.method("GET");
        assertEquals(1, http2Headers.names().size());
    }

    private static void verifyAllPseudoHeadersPresent(Http2Headers headers) {
        for (PseudoHeaderName pseudoName : PseudoHeaderName.values()) {
            assertNotNull(headers.get(pseudoName.value()));
        }
    }

    private static void verifyPseudoHeadersFirst(Http2Headers headers) {
        CharSequence lastNonPseudoName = null;
        for (Entry<CharSequence, CharSequence> entry: headers) {
            if (entry.getKey().length() == 0 || entry.getKey().charAt(0) != ':') {
                lastNonPseudoName = entry.getKey();
            } else if (lastNonPseudoName != null) {
                fail("All pseudo headers must be fist in iteration. Pseudo header " + entry.getKey() +
                        " is after a non pseudo header " + lastNonPseudoName);
            }
        }
    }

    private static Http2Headers newHeaders() {
        Http2Headers headers = new DefaultHttp2Headers();
        headers.add(of("name1"), of("value1"), of("value2"));
        headers.method(of("POST"));
        headers.add(of("2name"), of("value3"));
        headers.path(of("/index.html"));
        headers.status(of("200"));
        headers.authority(of("netty.io"));
        headers.add(of("name3"), of("value4"));
        headers.scheme(of("https"));
        return headers;
    }
}

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