/*******************************************************************************
 * 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.
 ******************************************************************************/
package org.apache.olingo.odata2.core.ep.producer;

import static org.custommonkey.xmlunit.XMLAssert.assertXpathEvaluatesTo;
import static org.custommonkey.xmlunit.XMLAssert.assertXpathExists;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import java.io.InputStream;

import org.apache.olingo.odata2.api.edm.EdmEntitySet;
import org.apache.olingo.odata2.api.ep.EntityProviderWriteProperties;
import org.apache.olingo.odata2.api.processor.ODataResponse;
import org.apache.olingo.odata2.core.ep.AbstractProviderTest;
import org.apache.olingo.odata2.testutil.helper.StringHelper;
import org.apache.olingo.odata2.testutil.mock.MockFacade;
import org.junit.Test;

/**
 *  
 */
public class XmlLinksEntityProducerTest extends AbstractProviderTest {

  public XmlLinksEntityProducerTest(final StreamWriterImplType type) {
    super(type);
  }

  @Test
  public void serializeRoomLinks() throws Exception {
    final EdmEntitySet entitySet = MockFacade.getMockEdm().getDefaultEntityContainer().getEntitySet("Rooms");
    initializeRoomData(2);

    final ODataResponse response = createAtomEntityProvider().writeLinks(entitySet, roomsData, DEFAULT_PROPERTIES);
    assertNotNull(response);
    assertNotNull(response.getEntity());
    assertNull("EntitypProvider must not set content header", response.getContentHeader());

    final String xml = StringHelper.inputStreamToString((InputStream) response.getEntity());
    assertNotNull(xml);

    assertXpathExists("/d:links", xml);
    assertXpathEvaluatesTo(BASE_URI.toString() + "Rooms('1')", "/d:links/d:uri/text()", xml);
    assertXpathEvaluatesTo(BASE_URI.toString() + "Rooms('2')", "/d:links/d:uri[2]/text()", xml);
  }

  @Test
  public void linksWithInlineCount() throws Exception {
    final EdmEntitySet entitySet = MockFacade.getMockEdm().getDefaultEntityContainer().getEntitySet("Rooms");
    initializeRoomData(1);

    final ODataResponse response = createAtomEntityProvider().writeLinks(entitySet, roomsData,
        EntityProviderWriteProperties.serviceRoot(BASE_URI).inlineCount(3).build());
    assertNotNull(response);
    assertNotNull(response.getEntity());

    final String xml = StringHelper.inputStreamToString((InputStream) response.getEntity());
    assertNotNull(xml);

    assertXpathExists("/d:links", xml);
    assertXpathEvaluatesTo("3", "/d:links/m:count/text()", xml);
    assertXpathEvaluatesTo(BASE_URI.toString() + "Rooms('1')", "/d:links/d:uri/text()", xml);
  }
}