/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.controller.sal.restconf.impl.test;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.junit.BeforeClass;
import org.junit.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.opendaylight.controller.sal.core.api.mount.MountInstance;
import org.opendaylight.controller.sal.core.api.mount.MountService;
import org.opendaylight.controller.sal.rest.impl.JsonToCompositeNodeProvider;
import org.opendaylight.controller.sal.rest.impl.RestconfDocumentedExceptionMapper;
import org.opendaylight.controller.sal.rest.impl.StructuredDataToJsonProvider;
import org.opendaylight.controller.sal.rest.impl.StructuredDataToXmlProvider;
import org.opendaylight.controller.sal.rest.impl.XmlToCompositeNodeProvider;
import org.opendaylight.controller.sal.restconf.impl.BrokerFacade;
import org.opendaylight.controller.sal.restconf.impl.CompositeNodeWrapper;
import org.opendaylight.controller.sal.restconf.impl.ControllerContext;
import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
import org.opendaylight.controller.sal.restconf.impl.RestconfImpl;
import org.opendaylight.controller.sal.restconf.impl.SimpleNodeWrapper;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.CompositeNode;
import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.data.api.Node;
import org.opendaylight.yangtools.yang.data.impl.ImmutableCompositeNode;
import org.opendaylight.yangtools.yang.data.impl.util.CompositeNodeBuilder;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

public class RestGetOperationTest extends JerseyTest {

    static class NodeData {
        Object key;
        Object data; // List for a CompositeNode, value Object for a SimpleNode

        NodeData( Object key, Object data ) {
            this.key = key;
            this.data = data;
        }
    }

    private static BrokerFacade brokerFacade;
    private static RestconfImpl restconfImpl;
    private static SchemaContext schemaContextYangsIetf;
    private static SchemaContext schemaContextTestModule;
    private static CompositeNode answerFromGet;

    private static SchemaContext schemaContextModules;
    private static SchemaContext schemaContextBehindMountPoint;

    @BeforeClass
    public static void init() throws FileNotFoundException {
        schemaContextYangsIetf = TestUtils.loadSchemaContext("/full-versions/yangs");
        schemaContextTestModule = TestUtils.loadSchemaContext("/full-versions/test-module");
        ControllerContext controllerContext = ControllerContext.getInstance();
        controllerContext.setSchemas(schemaContextYangsIetf);
        brokerFacade = mock(BrokerFacade.class);
        restconfImpl = RestconfImpl.getInstance();
        restconfImpl.setBroker(brokerFacade);
        restconfImpl.setControllerContext(controllerContext);
        answerFromGet = prepareCompositeNodeWithIetfInterfacesInterfacesData();

        schemaContextModules = TestUtils.loadSchemaContext("/modules");
        schemaContextBehindMountPoint = TestUtils.loadSchemaContext("/modules/modules-behind-mount-point");
    }

    @Override
    protected Application configure() {
        /* enable/disable Jersey logs to console */
        // enable(TestProperties.LOG_TRAFFIC);
        // enable(TestProperties.DUMP_ENTITY);
        // enable(TestProperties.RECORD_LOG_LEVEL);
        // set(TestProperties.RECORD_LOG_LEVEL, Level.ALL.intValue());
        ResourceConfig resourceConfig = new ResourceConfig();
        resourceConfig = resourceConfig.registerInstances(restconfImpl, StructuredDataToXmlProvider.INSTANCE,
                StructuredDataToJsonProvider.INSTANCE, XmlToCompositeNodeProvider.INSTANCE,
                JsonToCompositeNodeProvider.INSTANCE);
        resourceConfig.registerClasses( RestconfDocumentedExceptionMapper.class );
        return resourceConfig;
    }

    /**
     * Tests of status codes for "/operational/{identifier}".
     */
    @Test
    public void getOperationalStatusCodes() throws UnsupportedEncodingException {
        mockReadOperationalDataMethod();
        String uri = "/operational/ietf-interfaces:interfaces/interface/eth0";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));

        uri = "/operational/wrong-module:interfaces/interface/eth0";
        assertEquals(400, get(uri, MediaType.APPLICATION_XML));
    }

    /**
     * Tests of status codes for "/config/{identifier}".
     */
    @Test
    public void getConfigStatusCodes() throws UnsupportedEncodingException {
        mockReadConfigurationDataMethod();
        String uri = "/config/ietf-interfaces:interfaces/interface/eth0";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));

        uri = "/config/wrong-module:interfaces/interface/eth0";
        assertEquals(400, get(uri, MediaType.APPLICATION_XML));
    }

    /**
     * MountPoint test. URI represents mount point.
     */
    @Test
    public void getDataWithUrlMountPoint() throws UnsupportedEncodingException, URISyntaxException {
        when(
                brokerFacade.readConfigurationDataBehindMountPoint(any(MountInstance.class),
                        any(InstanceIdentifier.class))).thenReturn(prepareCnDataForMountPointTest());
        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextTestModule);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        ControllerContext.getInstance().setMountService(mockMountService);

        String uri = "/config/ietf-interfaces:interfaces/interface/0/yang-ext:mount/test-module:cont/cont1";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));

        uri = "/config/ietf-interfaces:interfaces/yang-ext:mount/test-module:cont/cont1";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));
    }

    /**
     * MountPoint test. URI represents mount point.
     *
     * Slashes in URI behind mount point. lst1 element with key
     * GigabitEthernet0%2F0%2F0%2F0 (GigabitEthernet0/0/0/0) is requested via
     * GET HTTP operation. It is tested whether %2F character is replaced with
     * simple / in InstanceIdentifier parameter in method
     * {@link BrokerFacade#readConfigurationDataBehindMountPoint(MountInstance, InstanceIdentifier)}
     * which is called in method {@link RestconfImpl#readConfigurationData}
     *
     *
     * @throws ParseException
     */
    @Test
    public void getDataWithSlashesBehindMountPoint() throws UnsupportedEncodingException, URISyntaxException,
            ParseException {
        InstanceIdentifier awaitedInstanceIdentifier = prepareInstanceIdentifierForList();
        when(
                brokerFacade.readConfigurationDataBehindMountPoint(any(MountInstance.class),
                        eq(awaitedInstanceIdentifier))).thenReturn(prepareCnDataForMountPointTest());
        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextTestModule);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        ControllerContext.getInstance().setMountService(mockMountService);

        String uri = "/config/ietf-interfaces:interfaces/interface/0/yang-ext:mount/test-module:cont/lst1/GigabitEthernet0%2F0%2F0%2F0";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));
    }

    private InstanceIdentifier prepareInstanceIdentifierForList() throws URISyntaxException, ParseException {
        List<PathArgument> parameters = new ArrayList<>();

        Date revision = new SimpleDateFormat("yyyy-MM-dd").parse("2014-01-09");
        URI uri = new URI("test:module");
        QName qNameCont = QName.create(uri, revision, "cont");
        QName qNameList = QName.create(uri, revision, "lst1");
        QName qNameKeyList = QName.create(uri, revision, "lf11");

        parameters.add(new InstanceIdentifier.NodeIdentifier(qNameCont));
        parameters.add(new InstanceIdentifier.NodeIdentifierWithPredicates(qNameList, qNameKeyList,
                "GigabitEthernet0/0/0/0"));
        return new InstanceIdentifier(parameters);
    }

    @Test
    public void getDataMountPointIntoHighestElement() throws UnsupportedEncodingException, URISyntaxException {
        when(
                brokerFacade.readConfigurationDataBehindMountPoint(any(MountInstance.class),
                        any(InstanceIdentifier.class))).thenReturn(prepareCnDataForMountPointTest());
        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextTestModule);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        ControllerContext.getInstance().setMountService(mockMountService);

        String uri = "/config/ietf-interfaces:interfaces/interface/0/yang-ext:mount/";
        assertEquals(200, get(uri, MediaType.APPLICATION_XML));
    }

    // /modules
    @Test
    public void getModulesTest() throws UnsupportedEncodingException, FileNotFoundException {
        ControllerContext.getInstance().setGlobalSchema(schemaContextModules);

        String uri = "/modules";

        Response response = target(uri).request("application/yang.api+json").get();
        validateModulesResponseJson(response);

        response = target(uri).request("application/yang.api+xml").get();
        validateModulesResponseXml(response);
    }

    // /streams/
    @Test
    public void getStreamsTest() throws UnsupportedEncodingException, FileNotFoundException {
        ControllerContext.getInstance().setGlobalSchema(schemaContextModules);

        String uri = "/streams";

        Response response = target(uri).request("application/yang.api+json").get();
        String responseBody = response.readEntity(String.class);
        assertNotNull(responseBody);
        assertTrue(responseBody.contains("streams"));

        response = target(uri).request("application/yang.api+xml").get();
        responseBody = response.readEntity(String.class);
        assertNotNull(responseBody);
        assertTrue(responseBody.contains("<streams xmlns=\"urn:ietf:params:xml:ns:yang:ietf-restconf\""));
    }

    // /modules/module
    @Test
    public void getModuleTest() throws FileNotFoundException, UnsupportedEncodingException {
        ControllerContext.getInstance().setGlobalSchema(schemaContextModules);

        String uri = "/modules/module/module2/2014-01-02";

        Response response = target(uri).request("application/yang.api+xml").get();
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);
        assertTrue("Module2 in xml wasn't found", prepareXmlRegex("module2", "2014-01-02", "module:2", responseBody)
                .find());
        String[] split = responseBody.split("<module");
        assertEquals("<module element is returned more then once", 2, split.length);

        response = target(uri).request("application/yang.api+json").get();
        assertEquals(200, response.getStatus());
        responseBody = response.readEntity(String.class);
        assertTrue("Module2 in json wasn't found", prepareJsonRegex("module2", "2014-01-02", "module:2", responseBody)
                .find());
        split = responseBody.split("\"module\"");
        assertEquals("\"module\" element is returned more then once", 2, split.length);

    }

    // /operations
    @Test
    public void getOperationsTest() throws FileNotFoundException, UnsupportedEncodingException {
        ControllerContext.getInstance().setGlobalSchema(schemaContextModules);

        String uri = "/operations";

        Response response = target(uri).request("application/yang.api+xml").get();
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);
        assertTrue("Xml response for /operations dummy-rpc1-module1 is incorrect",
                validateOperationsResponseXml(responseBody, "dummy-rpc1-module1", "module:1").find());
        assertTrue("Xml response for /operations dummy-rpc2-module1 is incorrect",
                validateOperationsResponseXml(responseBody, "dummy-rpc2-module1", "module:1").find());
        assertTrue("Xml response for /operations dummy-rpc1-module2 is incorrect",
                validateOperationsResponseXml(responseBody, "dummy-rpc1-module2", "module:2").find());
        assertTrue("Xml response for /operations dummy-rpc2-module2 is incorrect",
                validateOperationsResponseXml(responseBody, "dummy-rpc2-module2", "module:2").find());

        response = target(uri).request("application/yang.api+json").get();
        assertEquals(200, response.getStatus());
        responseBody = response.readEntity(String.class);
        assertTrue("Json response for /operations dummy-rpc1-module1 is incorrect",
                validateOperationsResponseJson(responseBody, "dummy-rpc1-module1", "module1").find());
        assertTrue("Json response for /operations dummy-rpc2-module1 is incorrect",
                validateOperationsResponseJson(responseBody, "dummy-rpc2-module1", "module1").find());
        assertTrue("Json response for /operations dummy-rpc1-module2 is incorrect",
                validateOperationsResponseJson(responseBody, "dummy-rpc1-module2", "module2").find());
        assertTrue("Json response for /operations dummy-rpc2-module2 is incorrect",
                validateOperationsResponseJson(responseBody, "dummy-rpc2-module2", "module2").find());

    }

    // /operations/pathToMountPoint/yang-ext:mount
    @Test
    public void getOperationsBehindMountPointTest() throws FileNotFoundException, UnsupportedEncodingException {
        ControllerContext controllerContext = ControllerContext.getInstance();
        controllerContext.setGlobalSchema(schemaContextModules);

        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextBehindMountPoint);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        controllerContext.setMountService(mockMountService);

        String uri = "/operations/ietf-interfaces:interfaces/interface/0/yang-ext:mount/";

        Response response = target(uri).request("application/yang.api+xml").get();
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);
        assertTrue("Xml response for /operations/mount_point rpc-behind-module1 is incorrect",
                validateOperationsResponseXml(responseBody, "rpc-behind-module1", "module:1:behind:mount:point").find());
        assertTrue("Xml response for /operations/mount_point rpc-behind-module2 is incorrect",
                validateOperationsResponseXml(responseBody, "rpc-behind-module2", "module:2:behind:mount:point").find());

        response = target(uri).request("application/yang.api+json").get();
        assertEquals(200, response.getStatus());
        responseBody = response.readEntity(String.class);
        assertTrue("Json response for /operations/mount_point rpc-behind-module1 is incorrect",
                validateOperationsResponseJson(responseBody, "rpc-behind-module1", "module1-behind-mount-point").find());
        assertTrue("Json response for /operations/mount_point rpc-behind-module2 is incorrect",
                validateOperationsResponseJson(responseBody, "rpc-behind-module2", "module2-behind-mount-point").find());

    }

    private Matcher validateOperationsResponseJson(String searchIn, String rpcName, String moduleName) {
        StringBuilder regex = new StringBuilder();
        regex.append("^");

        regex.append(".*\\{");
        regex.append(".*\"");

        // operations prefix optional
        regex.append("(");
        regex.append("ietf-restconf:");
        regex.append("|)");
        // :operations prefix optional

        regex.append("operations\"");
        regex.append(".*:");
        regex.append(".*\\{");

        regex.append(".*\"" + moduleName);
        regex.append(":");
        regex.append(rpcName + "\"");
        regex.append(".*\\[");
        regex.append(".*null");
        regex.append(".*\\]");

        regex.append(".*\\}");
        regex.append(".*\\}");

        regex.append(".*");
        regex.append("$");
        Pattern ptrn = Pattern.compile(regex.toString(), Pattern.DOTALL);
        return ptrn.matcher(searchIn);

    }

    private Matcher validateOperationsResponseXml(String searchIn, String rpcName, String namespace) {
        StringBuilder regex = new StringBuilder();

        regex.append("^");

        regex.append(".*<operations");
        regex.append(".*xmlns=\"urn:ietf:params:xml:ns:yang:ietf-restconf\"");
        regex.append(".*>");

        regex.append(".*<");
        regex.append(".*" + rpcName);
        regex.append(".*" + namespace);
        regex.append(".*/");
        regex.append(".*>");

        regex.append(".*</operations.*");
        regex.append(".*>");

        regex.append(".*");
        regex.append("$");
        Pattern ptrn = Pattern.compile(regex.toString(), Pattern.DOTALL);
        return ptrn.matcher(searchIn);
    }

    // /restconf/modules/pathToMountPoint/yang-ext:mount
    @Test
    public void getModulesBehindMountPoint() throws FileNotFoundException, UnsupportedEncodingException {
        ControllerContext controllerContext = ControllerContext.getInstance();
        controllerContext.setGlobalSchema(schemaContextModules);

        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextBehindMountPoint);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        controllerContext.setMountService(mockMountService);

        String uri = "/modules/ietf-interfaces:interfaces/interface/0/yang-ext:mount/";

        Response response = target(uri).request("application/yang.api+json").get();
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);

        assertTrue(
                "module1-behind-mount-point in json wasn't found",
                prepareJsonRegex("module1-behind-mount-point", "2014-02-03", "module:1:behind:mount:point",
                        responseBody).find());
        assertTrue(
                "module2-behind-mount-point in json wasn't found",
                prepareJsonRegex("module2-behind-mount-point", "2014-02-04", "module:2:behind:mount:point",
                        responseBody).find());

        response = target(uri).request("application/yang.api+xml").get();
        assertEquals(200, response.getStatus());
        responseBody = response.readEntity(String.class);
        assertTrue(
                "module1-behind-mount-point in json wasn't found",
                prepareXmlRegex("module1-behind-mount-point", "2014-02-03", "module:1:behind:mount:point", responseBody)
                        .find());
        assertTrue(
                "module2-behind-mount-point in json wasn't found",
                prepareXmlRegex("module2-behind-mount-point", "2014-02-04", "module:2:behind:mount:point", responseBody)
                        .find());

    }

    // /restconf/modules/module/pathToMountPoint/yang-ext:mount/moduleName/revision
    @Test
    public void getModuleBehindMountPoint() throws FileNotFoundException, UnsupportedEncodingException {
        ControllerContext controllerContext = ControllerContext.getInstance();
        controllerContext.setGlobalSchema(schemaContextModules);

        MountInstance mountInstance = mock(MountInstance.class);
        when(mountInstance.getSchemaContext()).thenReturn(schemaContextBehindMountPoint);
        MountService mockMountService = mock(MountService.class);
        when(mockMountService.getMountPoint(any(InstanceIdentifier.class))).thenReturn(mountInstance);

        controllerContext.setMountService(mockMountService);

        String uri = "/modules/module/ietf-interfaces:interfaces/interface/0/yang-ext:mount/module1-behind-mount-point/2014-02-03";

        Response response = target(uri).request("application/yang.api+json").get();
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);

        assertTrue(
                "module1-behind-mount-point in json wasn't found",
                prepareJsonRegex("module1-behind-mount-point", "2014-02-03", "module:1:behind:mount:point",
                        responseBody).find());
        String[] split = responseBody.split("\"module\"");
        assertEquals("\"module\" element is returned more then once", 2, split.length);

        response = target(uri).request("application/yang.api+xml").get();
        assertEquals(200, response.getStatus());
        responseBody = response.readEntity(String.class);
        assertTrue(
                "module1-behind-mount-point in json wasn't found",
                prepareXmlRegex("module1-behind-mount-point", "2014-02-03", "module:1:behind:mount:point", responseBody)
                        .find());
        split = responseBody.split("<module");
        assertEquals("<module element is returned more then once", 2, split.length);

    }

    private void validateModulesResponseXml(Response response) {
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);

        assertTrue("Module1 in xml wasn't found", prepareXmlRegex("module1", "2014-01-01", "module:1", responseBody)
                .find());
        assertTrue("Module2 in xml wasn't found", prepareXmlRegex("module2", "2014-01-02", "module:2", responseBody)
                .find());
        assertTrue("Module3 in xml wasn't found", prepareXmlRegex("module3", "2014-01-03", "module:3", responseBody)
                .find());
    }

    private void validateModulesResponseJson(Response response) {
        assertEquals(200, response.getStatus());
        String responseBody = response.readEntity(String.class);

        assertTrue("Module1 in json wasn't found", prepareJsonRegex("module1", "2014-01-01", "module:1", responseBody)
                .find());
        assertTrue("Module2 in json wasn't found", prepareJsonRegex("module2", "2014-01-02", "module:2", responseBody)
                .find());
        assertTrue("Module3 in json wasn't found", prepareJsonRegex("module3", "2014-01-03", "module:3", responseBody)
                .find());
    }

    private Matcher prepareJsonRegex(String module, String revision, String namespace, String searchIn) {
        StringBuilder regex = new StringBuilder();
        regex.append("^");

        regex.append(".*\\{");
        regex.append(".*\"name\"");
        regex.append(".*:");
        regex.append(".*\"" + module + "\",");

        regex.append(".*\"revision\"");
        regex.append(".*:");
        regex.append(".*\"" + revision + "\",");

        regex.append(".*\"namespace\"");
        regex.append(".*:");
        regex.append(".*\"" + namespace + "\"");

        regex.append(".*\\}");

        regex.append(".*");
        regex.append("$");
        Pattern ptrn = Pattern.compile(regex.toString(), Pattern.DOTALL);
        return ptrn.matcher(searchIn);

    }

    private Matcher prepareXmlRegex(String module, String revision, String namespace, String searchIn) {
        StringBuilder regex = new StringBuilder();
        regex.append("^");

        regex.append(".*<module.*");
        regex.append(".*>");

        regex.append(".*<name>");
        regex.append(".*" + module);
        regex.append(".*<\\/name>");

        regex.append(".*<revision>");
        regex.append(".*" + revision);
        regex.append(".*<\\/revision>");

        regex.append(".*<namespace>");
        regex.append(".*" + namespace);
        regex.append(".*<\\/namespace>");

        regex.append(".*<\\/module.*>");

        regex.append(".*");
        regex.append("$");

        Pattern ptrn = Pattern.compile(regex.toString(), Pattern.DOTALL);
        return ptrn.matcher(searchIn);
    }

    private void prepareMockForModulesTest(ControllerContext mockedControllerContext) throws FileNotFoundException {
        SchemaContext schemaContext = TestUtils.loadSchemaContext("/modules");
        mockedControllerContext.setGlobalSchema(schemaContext);
        // when(mockedControllerContext.getGlobalSchema()).thenReturn(schemaContext);
    }

    private int get(String uri, String mediaType) {
        return target(uri).request(mediaType).get().getStatus();
    }

    private CompositeNode prepareCnDataForMountPointTest() throws URISyntaxException {
        CompositeNodeWrapper cont1 = new CompositeNodeWrapper(new URI("test:module"), "cont1");
        SimpleNodeWrapper lf11 = new SimpleNodeWrapper(new URI("test:module"), "lf11", "lf11 value");
        cont1.addValue(lf11);
        return cont1.unwrap();
    }

    private void mockReadOperationalDataMethod() {
        when(brokerFacade.readOperationalData(any(InstanceIdentifier.class))).thenReturn(answerFromGet);
    }

    private void mockReadConfigurationDataMethod() {
        when(brokerFacade.readConfigurationData(any(InstanceIdentifier.class))).thenReturn(answerFromGet);
    }

    private static CompositeNode prepareCompositeNodeWithIetfInterfacesInterfacesData() {
        CompositeNode intface;
        try {
            intface = new CompositeNodeWrapper(new URI("interface"), "interface");
            List<Node<?>> childs = new ArrayList<>();

            childs.add(new SimpleNodeWrapper(new URI("name"), "name", "eth0"));
            childs.add(new SimpleNodeWrapper(new URI("type"), "type", "ethernetCsmacd"));
            childs.add(new SimpleNodeWrapper(new URI("enabled"), "enabled", Boolean.FALSE));
            childs.add(new SimpleNodeWrapper(new URI("description"), "description", "some interface"));
            intface.setValue(childs);
            return intface;
        } catch (URISyntaxException e) {
        }

        return null;
    }

    @Test
    public void getDataWithUriDepthParameterTest() throws UnsupportedEncodingException {

        ControllerContext.getInstance().setGlobalSchema( schemaContextModules );

        CompositeNode depth1Cont = toCompositeNode(
            toCompositeNodeData( toNestedQName( "depth1-cont" ),
                toCompositeNodeData( toNestedQName( "depth2-cont1" ),
                    toCompositeNodeData( toNestedQName( "depth3-cont1" ),
                        toCompositeNodeData( toNestedQName( "depth4-cont1" ),
                            toSimpleNodeData( toNestedQName( "depth5-leaf1" ), "depth5-leaf1-value" )
                        ),
                        toSimpleNodeData( toNestedQName( "depth4-leaf1" ), "depth4-leaf1-value" )
                    ),
                    toSimpleNodeData( toNestedQName( "depth3-leaf1" ), "depth3-leaf1-value" )
                ),
                toCompositeNodeData( toNestedQName( "depth2-cont2" ),
                    toCompositeNodeData( toNestedQName( "depth3-cont2" ),
                        toCompositeNodeData( toNestedQName( "depth4-cont2" ),
                            toSimpleNodeData( toNestedQName( "depth5-leaf2" ), "depth5-leaf2-value" )
                        ),
                        toSimpleNodeData( toNestedQName( "depth4-leaf2" ), "depth4-leaf2-value" )
                    ),
                    toSimpleNodeData( toNestedQName( "depth3-leaf2" ), "depth3-leaf2-value" )
                ),
                toSimpleNodeData( toNestedQName( "depth2-leaf1" ), "depth2-leaf1-value" )
            ) );

        when( brokerFacade.readConfigurationData( any( InstanceIdentifier.class ) ) )
            .thenReturn( depth1Cont );

        // Test config with depth 1

        Response response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "1" )
                                .request( "application/xml" ).get();

        verifyXMLResponse( response, expectEmptyContainer( "depth1-cont" ) );

        // Test config with depth 2

        response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "2" )
                       .request( "application/xml" ).get();

//        String xml="<depth1-cont><depth2-cont1/><depth2-cont2/><depth2-leaf1>depth2-leaf1-value</depth2-leaf1></depth1-cont>";
//        Response mr=mock(Response.class);
//        when(mr.getEntity()).thenReturn( new java.io.StringBufferInputStream(xml) );

        verifyXMLResponse( response,
            expectContainer( "depth1-cont",
                expectEmptyContainer( "depth2-cont1" ),
                expectEmptyContainer( "depth2-cont2" ),
                expectLeaf( "depth2-leaf1", "depth2-leaf1-value" )
            ) );

        // Test config with depth 3

        response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "3" )
                       .request( "application/xml" ).get();

        verifyXMLResponse( response,
            expectContainer( "depth1-cont",
                expectContainer( "depth2-cont1",
                    expectEmptyContainer( "depth3-cont1" ),
                    expectLeaf( "depth3-leaf1", "depth3-leaf1-value" )
                ),
                expectContainer( "depth2-cont2",
                    expectEmptyContainer( "depth3-cont2" ),
                    expectLeaf( "depth3-leaf2", "depth3-leaf2-value" )
                ),
                expectLeaf( "depth2-leaf1", "depth2-leaf1-value" )
           ) );

        // Test config with depth 4

        response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "4" )
                      .request( "application/xml" ).get();

        verifyXMLResponse( response,
            expectContainer( "depth1-cont",
                expectContainer( "depth2-cont1",
                    expectContainer( "depth3-cont1",
                        expectEmptyContainer( "depth4-cont1" ),
                        expectLeaf( "depth4-leaf1", "depth4-leaf1-value" )
                    ),
                    expectLeaf( "depth3-leaf1", "depth3-leaf1-value" )
                ),
                expectContainer( "depth2-cont2",
                    expectContainer( "depth3-cont2",
                        expectEmptyContainer( "depth4-cont2" ),
                        expectLeaf( "depth4-leaf2", "depth4-leaf2-value" )
                    ),
                    expectLeaf( "depth3-leaf2", "depth3-leaf2-value" )
                ),
                expectLeaf( "depth2-leaf1", "depth2-leaf1-value" )
            ) );

        // Test config with depth 5

        response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "5" )
                       .request( "application/xml" ).get();

        verifyXMLResponse( response,
            expectContainer( "depth1-cont",
                expectContainer( "depth2-cont1",
                    expectContainer( "depth3-cont1",
                        expectContainer( "depth4-cont1",
                            expectLeaf( "depth5-leaf1", "depth5-leaf1-value" )
                        ),
                        expectLeaf( "depth4-leaf1", "depth4-leaf1-value" )
                    ),
                    expectLeaf( "depth3-leaf1", "depth3-leaf1-value" )
                ),
                expectContainer( "depth2-cont2",
                    expectContainer( "depth3-cont2",
                        expectContainer( "depth4-cont2",
                            expectLeaf( "depth5-leaf2", "depth5-leaf2-value" )
                        ),
                        expectLeaf( "depth4-leaf2", "depth4-leaf2-value" )
                    ),
                    expectLeaf( "depth3-leaf2", "depth3-leaf2-value" )
                ),
                expectLeaf( "depth2-leaf1", "depth2-leaf1-value" )
            ) );

        // Test config with depth unbounded

        response = target( "/config/nested-module:depth1-cont" ).queryParam( "depth", "unbounded" )
                       .request( "application/xml" ).get();

        verifyXMLResponse( response,
            expectContainer( "depth1-cont",
                expectContainer( "depth2-cont1",
                    expectContainer( "depth3-cont1",
                        expectContainer( "depth4-cont1",
                            expectLeaf( "depth5-leaf1", "depth5-leaf1-value" )
                        ),
                        expectLeaf( "depth4-leaf1", "depth4-leaf1-value" )
                    ),
                    expectLeaf( "depth3-leaf1", "depth3-leaf1-value" )
                ),
                expectContainer( "depth2-cont2",
                    expectContainer( "depth3-cont2",
                        expectContainer( "depth4-cont2",
                            expectLeaf( "depth5-leaf2", "depth5-leaf2-value" )
                        ),
                        expectLeaf( "depth4-leaf2", "depth4-leaf2-value" )
                    ),
                    expectLeaf( "depth3-leaf2", "depth3-leaf2-value" )
                ),
                expectLeaf( "depth2-leaf1", "depth2-leaf1-value" )
            ) );

        // Test operational

        CompositeNode depth2Cont1 = toCompositeNode(
            toCompositeNodeData( toNestedQName( "depth2-cont1" ),
                toCompositeNodeData( toNestedQName( "depth3-cont1" ),
                    toCompositeNodeData( toNestedQName( "depth4-cont1" ),
                        toSimpleNodeData( toNestedQName( "depth5-leaf1" ), "depth5-leaf1-value" )
                    ),
                    toSimpleNodeData( toNestedQName( "depth4-leaf1" ), "depth4-leaf1-value" )
                ),
                toSimpleNodeData( toNestedQName( "depth3-leaf1" ), "depth3-leaf1-value" )
            ) );

        when( brokerFacade.readOperationalData( any( InstanceIdentifier.class ) ) )
             .thenReturn( depth2Cont1 );

        response = target( "/operational/nested-module:depth1-cont/depth2-cont1" )
                       .queryParam( "depth", "3" ).request( "application/xml" ).get();

        verifyXMLResponse( response,
            expectContainer( "depth2-cont1",
                expectContainer( "depth3-cont1",
                    expectEmptyContainer( "depth4-cont1" ),
                    expectLeaf( "depth4-leaf1", "depth4-leaf1-value" )
                ),
                expectLeaf( "depth3-leaf1", "depth3-leaf1-value" )
            ) );
    }

    @Test
    public void getDataWithInvalidDepthParameterTest() {

        ControllerContext.getInstance().setGlobalSchema( schemaContextModules );

        final MultivaluedMap<String,String> paramMap = new MultivaluedHashMap<>();
        paramMap.putSingle( "depth", "1o" );
        UriInfo mockInfo = mock( UriInfo.class );
        when( mockInfo.getQueryParameters( false ) ).thenAnswer(
            new Answer<MultivaluedMap<String,String>>() {
                @Override
                public MultivaluedMap<String, String> answer( InvocationOnMock invocation ) {
                    return paramMap;
                }
            } );

        getDataWithInvalidDepthParameterTest( mockInfo );

        paramMap.putSingle( "depth", "0" );
        getDataWithInvalidDepthParameterTest( mockInfo );

        paramMap.putSingle( "depth", "-1" );
        getDataWithInvalidDepthParameterTest( mockInfo );
    }

    private void getDataWithInvalidDepthParameterTest( UriInfo uriInfo ) {
        try {
            restconfImpl.readConfigurationData( "nested-module:depth1-cont", uriInfo );
            fail( "Expected RestconfDocumentedException" );
        }
        catch( RestconfDocumentedException e ) {
            assertTrue( "Unexpected error message: " + e.getErrors().get( 0 ).getErrorMessage(),
                        e.getErrors().get( 0 ).getErrorMessage().contains( "depth" ) );
        }
    }

    private void verifyXMLResponse( Response response, NodeData nodeData ) {

        Document doc = TestUtils.loadDocumentFrom( (InputStream) response.getEntity() );
        assertNotNull( "Could not parse XML document", doc );

        //System.out.println(TestUtils.getDocumentInPrintableForm( doc ));

        verifyContainerElement( doc.getDocumentElement(), nodeData );
    }

    @SuppressWarnings("unchecked")
    private void verifyContainerElement( Element element, NodeData nodeData ) {

        assertEquals( "Element local name", nodeData.key, element.getNodeName() );

        NodeList childNodes = element.getChildNodes();
        if( nodeData.data == null ) { // empty container
            assertTrue( "Expected no child elements for \"" + element.getNodeName() + "\"",
                        childNodes.getLength() == 0 );
            return;
        }

        Map<String,NodeData> expChildMap = Maps.newHashMap();
        for( NodeData expChild: (List<NodeData>)nodeData.data ) {
            expChildMap.put( expChild.key.toString(), expChild );
        }

        for( int i = 0; i < childNodes.getLength(); i++ ) {
            org.w3c.dom.Node actualChild = childNodes.item( i );
            if( !( actualChild instanceof Element ) ) {
                continue;
            }

            Element actualElement = (Element)actualChild;
            NodeData expChild = expChildMap.remove( actualElement.getNodeName() );
            assertNotNull( "Unexpected child element for parent \"" + element.getNodeName() +
                           "\": " + actualElement.getNodeName(), expChild );

            if( expChild.data == null || expChild.data instanceof List ) {
                verifyContainerElement( actualElement, expChild );
            }
            else {
                assertEquals( "Text content for element: " + actualElement.getNodeName(),
                              expChild.data, actualElement.getTextContent() );
            }
        }

        if( !expChildMap.isEmpty() ) {
            fail( "Missing elements for parent \"" + element.getNodeName() +
                  "\": " + expChildMap.keySet() );
        }
    }

    private NodeData expectContainer( String name, NodeData... childData ) {
        return new NodeData( name, Lists.newArrayList( childData ) );
    }

    private NodeData expectEmptyContainer( String name ) {
        return new NodeData( name, null );
    }

    private NodeData expectLeaf( String name, Object value ) {
        return new NodeData( name, value );
    }

    private QName toNestedQName( String localName ) {
        return QName.create( "urn:nested:module", "2014-06-3", localName );
    }

    @SuppressWarnings("unchecked")
    private CompositeNode toCompositeNode( NodeData nodeData ) {
        CompositeNodeBuilder<ImmutableCompositeNode> builder = ImmutableCompositeNode.builder();
        builder.setQName( (QName) nodeData.key );

        for( NodeData child: (List<NodeData>)nodeData.data ) {
            if( child.data instanceof List ) {
                builder.add( toCompositeNode( child ) );
            }
            else {
                builder.addLeaf( (QName) child.key, child.data );
            }
        }

        return builder.toInstance();
    }

    private NodeData toCompositeNodeData( QName key, NodeData... childData ) {
        return new NodeData( key, Lists.newArrayList( childData ) );
    }

    private NodeData toSimpleNodeData( QName key, Object value ) {
        return new NodeData( key, value );
    }
}