/*******************************************************************************
 * Copyright 2013 SAP AG
 * 
 * Licensed 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 com.sap.core.odata.fit.ref;

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

import org.apache.http.HttpResponse;
import org.junit.Test;

import com.sap.core.odata.api.commons.HttpContentType;

/**
 * Tests employing the reference scenario reading links in XML format
 * @author SAP AG
 */
public final class LinksXmlReadOnlyTest extends AbstractRefXmlTest {

  @Test
  public void singleLink() throws Exception {
    HttpResponse response = callUri("Employees('6')/$links/ne_Room");
    checkMediaType(response, HttpContentType.APPLICATION_XML_UTF8);
    assertXpathEvaluatesTo(getEndpoint() + "Rooms('2')", "/d:uri", getBody(response));

    response = callUri("Managers('3')/$links/nm_Employees('5')");
    checkMediaType(response, HttpContentType.APPLICATION_XML_UTF8);
    assertXpathEvaluatesTo(getEndpoint() + "Employees('5')", "/d:uri", getBody(response));

    response = callUri("Teams('3')/nt_Employees('6')/$links/ne_Room");
    checkMediaType(response, HttpContentType.APPLICATION_XML_UTF8);
    assertXpathEvaluatesTo(getEndpoint() + "Rooms('2')", "/d:uri", getBody(response));

    response = callUri("Employees('6')/ne_Manager/$links/nm_Employees('3')");
    checkMediaType(response, HttpContentType.APPLICATION_XML_UTF8);
    assertXpathEvaluatesTo(getEndpoint() + "Employees('3')", "/d:uri", getBody(response));

    badRequest("Employees('6')/$links/");
    badRequest("Employees('6')/ne_Manager/$links");
  }

  @Test
  public void links() throws Exception {
    HttpResponse response = callUri("Managers('3')/$links/nm_Employees()");
    checkMediaType(response, HttpContentType.APPLICATION_XML_UTF8);
    final String body = getBody(response);
    assertXpathEvaluatesTo("2", "count(/d:links/d:uri)", body);
    assertXpathExists("/d:links[d:uri = \"" + getEndpoint() + "Employees('4')" + "\"]", body);
    assertXpathExists("/d:links[d:uri = \"" + getEndpoint() + "Employees('5')" + "\"]", body);
    assertFalse(body.contains("'6'"));
  }
}