/*
 * ====================================================================
 * 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.hc.client5.http.impl.classic;

import java.io.IOException;
import java.io.InputStream;

import org.apache.hc.client5.http.HttpResponseException;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.io.entity.StringEntity;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

/**
 * Unit tests for {@link BasicHttpClientResponseHandler}.
 */
public class TestAbstractHttpClientResponseHandler {

    @Test
    public void testSuccessfulResponse() throws Exception {
        final ClassicHttpResponse response = Mockito.mock(ClassicHttpResponse.class);
        final HttpEntity entity = new StringEntity("42");
        Mockito.when(response.getCode()).thenReturn(200);
        Mockito.when(response.getEntity()).thenReturn(entity);

        final AbstractHttpClientResponseHandler<Integer> handler = new AbstractHttpClientResponseHandler<Integer>() {

          @Override
          public Integer handleEntity(final HttpEntity entity) throws IOException {
            return Integer.valueOf(new String(EntityUtils.toByteArray(entity)));
          }
        };
        final Integer number = handler.handleResponse(response);
        Assertions.assertEquals(42, number.intValue());
    }

    @SuppressWarnings("boxing")
    @Test
    public void testUnsuccessfulResponse() throws Exception {
        final InputStream inStream = Mockito.mock(InputStream.class);
        final HttpEntity entity = Mockito.mock(HttpEntity.class);
        Mockito.when(entity.isStreaming()).thenReturn(true);
        Mockito.when(entity.getContent()).thenReturn(inStream);
        final ClassicHttpResponse response = Mockito.mock(ClassicHttpResponse.class);
        Mockito.when(response.getCode()).thenReturn(404);
        Mockito.when(response.getReasonPhrase()).thenReturn("NOT FOUND");
        Mockito.when(response.getEntity()).thenReturn(entity);

        final BasicHttpClientResponseHandler handler = new BasicHttpClientResponseHandler();
        final HttpResponseException exception = Assertions.assertThrows(HttpResponseException.class, () ->
                handler.handleResponse(response));
        Assertions.assertEquals(404, exception.getStatusCode());
        Assertions.assertEquals("NOT FOUND", exception.getReasonPhrase());
        Assertions.assertEquals("status code: 404, reason phrase: NOT FOUND", exception.getMessage());
        Mockito.verify(entity).getContent();
        Mockito.verify(inStream).close();
    }

    @SuppressWarnings("boxing")
    @Test
    public void testUnsuccessfulResponseEmptyReason() throws Exception {
        final InputStream inStream = Mockito.mock(InputStream.class);
        final HttpEntity entity = Mockito.mock(HttpEntity.class);
        Mockito.when(entity.isStreaming()).thenReturn(true);
        Mockito.when(entity.getContent()).thenReturn(inStream);
        final ClassicHttpResponse response = Mockito.mock(ClassicHttpResponse.class);
        Mockito.when(response.getCode()).thenReturn(404);
        Mockito.when(response.getEntity()).thenReturn(entity);

        final BasicHttpClientResponseHandler handler = new BasicHttpClientResponseHandler();
        final HttpResponseException exception = Assertions.assertThrows(HttpResponseException.class, () ->
                handler.handleResponse(response));
        Assertions.assertEquals(404, exception.getStatusCode());
        Assertions.assertNull(exception.getReasonPhrase());
        Assertions.assertEquals("status code: 404", exception.getMessage());
        Mockito.verify(entity).getContent();
        Mockito.verify(inStream).close();
    }
}
