/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.ogt.http.impl.conn;

import org.apache.ogt.http.Header;
import org.apache.ogt.http.HttpResponse;
import org.apache.ogt.http.HttpVersion;
import org.apache.ogt.http.NoHttpResponseException;
import org.apache.ogt.http.ProtocolException;
import org.apache.ogt.http.conn.params.ConnConnectionPNames;
import org.apache.ogt.http.impl.DefaultHttpResponseFactory;
import org.apache.ogt.http.impl.conn.DefaultResponseParser;
import org.apache.ogt.http.io.HttpMessageParser;
import org.apache.ogt.http.io.SessionInputBuffer;
import org.apache.ogt.http.message.BasicLineParser;
import org.apache.ogt.http.mockup.SessionInputBufferMockup;
import org.apache.ogt.http.params.BasicHttpParams;
import org.apache.ogt.http.params.HttpParams;
import org.junit.Assert;
import org.junit.Test;

/**
 * Tests for <code>DefaultResponseParser</code>.
 */
public class TestDefaultResponseParser {

    @Test
    public void testResponseParsingWithSomeGarbage() throws Exception {
        String s =
            "garbage\r\n" +
            "garbage\r\n" +
            "more garbage\r\n" +
            "HTTP/1.1 200 OK\r\n" +
            "header1: value1\r\n" +
            "header2: value2\r\n" +
            "\r\n";

        HttpParams params = new BasicHttpParams();
        SessionInputBuffer inbuffer = new SessionInputBufferMockup(s, "US-ASCII", params);
        HttpMessageParser parser = new DefaultResponseParser(
                inbuffer,
                BasicLineParser.DEFAULT,
                new DefaultHttpResponseFactory(),
                params);

        HttpResponse response = (HttpResponse) parser.parse();
        Assert.assertNotNull(response);
        Assert.assertEquals(HttpVersion.HTTP_1_1, response.getProtocolVersion());
        Assert.assertEquals(200, response.getStatusLine().getStatusCode());

        Header[] headers = response.getAllHeaders();
        Assert.assertNotNull(headers);
        Assert.assertEquals(2, headers.length);
        Assert.assertEquals("header1", headers[0].getName());
        Assert.assertEquals("header2", headers[1].getName());
    }

    @Test(expected=ProtocolException.class)
    public void testResponseParsingWithTooMuchGarbage() throws Exception {
        String s =
            "garbage\r\n" +
            "garbage\r\n" +
            "more garbage\r\n" +
            "HTTP/1.1 200 OK\r\n" +
            "header1: value1\r\n" +
            "header2: value2\r\n" +
            "\r\n";

        HttpParams params = new BasicHttpParams();
        params.setParameter(ConnConnectionPNames.MAX_STATUS_LINE_GARBAGE, Integer.valueOf(2));
        SessionInputBuffer inbuffer = new SessionInputBufferMockup(s, "US-ASCII", params);
        HttpMessageParser parser = new DefaultResponseParser(
                inbuffer,
                BasicLineParser.DEFAULT,
                new DefaultHttpResponseFactory(),
                params);
        parser.parse();
    }

    @Test(expected=NoHttpResponseException.class)
    public void testResponseParsingNoResponse() throws Exception {
        HttpParams params = new BasicHttpParams();
        SessionInputBuffer inbuffer = new SessionInputBufferMockup("", "US-ASCII", params);
        HttpMessageParser parser = new DefaultResponseParser(
                inbuffer,
                BasicLineParser.DEFAULT,
                new DefaultHttpResponseFactory(),
                params);
        parser.parse();
    }

    @Test(expected=ProtocolException.class)
    public void testResponseParsingOnlyGarbage() throws Exception {
        String s =
            "garbage\r\n" +
            "garbage\r\n" +
            "more garbage\r\n" +
            "a lot more garbage\r\n";
        HttpParams params = new BasicHttpParams();
        SessionInputBuffer inbuffer = new SessionInputBufferMockup(s, "US-ASCII", params);
        HttpMessageParser parser = new DefaultResponseParser(
                inbuffer,
                BasicLineParser.DEFAULT,
                new DefaultHttpResponseFactory(),
                params);
        parser.parse();
    }

}