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/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.aai.rest.dsl;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.onap.aai.AAISetup;
import org.onap.aai.exceptions.AAIException;

import static org.junit.Assert.assertEquals;

/**
 * The Class DslMain.
 */
public class DslQueryProcessorTest extends AAISetup {
	@Rule
	public ExpectedException expectedEx = ExpectedException.none();

	@Test
	public void singleNode1() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coid')";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coid')"
				+ ".store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void singleNodeLimit() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coid') LIMIT 10";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coid')"
				+ ".store('x').cap('x').unfold().dedup().limit(10)";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void specialCharacterTest() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coidhello:?_-)(!@#$%^&*+={}[]|/.<,') LIMIT 10";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coidhello:?_-)(!@#$%^&*+={}[]|/.<,')"
				+ ".store('x').cap('x').unfold().dedup().limit(10)";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void singleNodeLimitBlah() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coid') LIMIT blah";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coid')"
				+ ".getVerticesByProperty('cloud-region-id','cr id').store('x').cap('x').unfold().dedup().limit(10)";

		expectedEx.expect(org.onap.aai.exceptions.AAIException.class);
		expectedEx.expectMessage("DSL Syntax Error while processing the query");
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
	}

	@Test
	public void singleNodeLimitNull() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coid') LIMIT ";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coid')"
				+ ".getVerticesByProperty('cloud-region-id','cr id').store('x').cap('x').unfold().dedup().limit(10)";

		expectedEx.expect(org.onap.aai.exceptions.AAIException.class);
		expectedEx.expectMessage("DSL Syntax Error while processing the query");

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
	}

	@Test
	public void cloudRegion1Test() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','coid')('cloud-region-id','cr id')  LIMIT 10";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner','coid')"
				+ ".getVerticesByProperty('cloud-region-id','cr id').store('x').cap('x').unfold().dedup().limit(10)";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void cloudRegion_entitlementTest() throws AAIException {

		/*
		A store within a where makes no sense
		 */
		String aaiQuery = "generic-vnf('vnf-id','vnfId') ( > vserver > tenant > cloud-region('cloud-region-id','One')) > entitlement*";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').where("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver').createEdgeTraversal(EdgeType.TREE, 'vserver','tenant').createEdgeTraversal(EdgeType.TREE, 'tenant','cloud-region')"
				+ ".getVerticesByProperty('cloud-region-id','One'))"
				+ ".createEdgeTraversal(EdgeType.TREE, 'generic-vnf','entitlement').store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void cloudRegion_entitlementTestWithLabels() throws AAIException {

		String aaiQuery = "generic-vnf('vnf-id','vnfId') (> ('tosca.relationships.HostedOn') vserver > ('org.onap.relationships.inventory.BelongsTo') tenant > ('org.onap.relationships.inventory.BelongsTo') cloud-region('cloud-region-id','One')) > ('org.onap.relationships.inventory.ComposedOf')service-instance*";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').where("
				+ "builder.newInstance().createEdgeTraversalWithLabels( 'generic-vnf','vserver', new ArrayList<>(Arrays.asList('tosca.relationships.HostedOn'))).createEdgeTraversalWithLabels( 'vserver','tenant', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.BelongsTo'))).createEdgeTraversalWithLabels( 'tenant','cloud-region', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.BelongsTo')))"
				+ ".getVerticesByProperty('cloud-region-id','One'))"
				+ ".createEdgeTraversalWithLabels( 'generic-vnf','service-instance', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.ComposedOf'))).store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void complex_az_fromComplexTest() throws AAIException {

		String aaiQuery = "cloud-region('cloud-owner','coid')('cloud-region-id','crid')  > [  availability-zone* ,  complex*]";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region')"
				+ ".getVerticesByProperty('cloud-owner','coid').getVerticesByProperty('cloud-region-id','crid')"
				+ ".union(builder.newInstance().createEdgeTraversal(EdgeType.TREE, 'cloud-region','availability-zone').store('x')"
				+ ",builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'cloud-region','complex').store('x')).cap('x').unfold().dedup()";

		assertEquals(dslQuery, query);
	}

	@Test
	public void complex_az_fromComplexTestWithLabels() throws AAIException {

		String aaiQuery = "cloud-region('cloud-owner','coid')('cloud-region-id','crid')  > [  ('org.onap.relationships.inventory.BelongsTo')availability-zone* ,  ('org.onap.relationships.inventory.LocatedIn')complex*]";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region')"
				+ ".getVerticesByProperty('cloud-owner','coid').getVerticesByProperty('cloud-region-id','crid')"
				+ ".union(builder.newInstance().createEdgeTraversalWithLabels( 'cloud-region','availability-zone', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.BelongsTo'))).store('x')"
				+ ",builder.newInstance().createEdgeTraversalWithLabels( 'cloud-region','complex', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.LocatedIn'))).store('x')).cap('x').unfold().dedup()";

		assertEquals(dslQuery, query);
	}

	@Test
	public void cloudRegion_fromComplex1Test() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'complex').getVerticesByProperty('data-center-code','data-center-code-name')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'complex','cloud-region').store('x').cap('x').unfold().dedup()";
		String aaiQuery = "complex('data-center-code','data-center-code-name') >  cloud-region*";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void cloudRegion_fromComplex2Test() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'complex').getVerticesByProperty('data-center-code','data-center-code-name')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'complex','cloud-region').getVerticesByProperty('cloud-region-version','crv')"
				+ ".store('x').cap('x').unfold().dedup()";
		String aaiQuery = "complex('data-center-code','data-center-code-name') >  cloud-region*('cloud-region-version','crv')";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void cloudRegion_fromNfTypeTest() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'image').getVerticesByProperty('application-vendor','F5')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'image','vserver')"
				+ ".where(builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'vserver','generic-vnf').getVerticesByProperty('vnf-name','ZALL1MMSC03'))"
				+ ".createEdgeTraversal(EdgeType.TREE, 'vserver','tenant').createEdgeTraversal(EdgeType.TREE, 'tenant','cloud-region')"
				+ ".store('x').cap('x').unfold().dedup()";

        String aaiQuery = "image('application-vendor','F5') > vserver (> generic-vnf('vnf-name','ZALL1MMSC03')) > tenant > cloud-region*";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(builderQuery, query);
	}

	@Test
	public void cloudRegion_fromNfTypeVendorVersionTest() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'image').getVerticesByProperty('application-vendor','vendor')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'image','vserver').where("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'vserver','generic-vnf').getVerticesByProperty('nf-type','nfType')"
				+ ").createEdgeTraversal(EdgeType.TREE, 'vserver','tenant').createEdgeTraversal(EdgeType.TREE, 'tenant','cloud-region')"
				+ ".store('x').cap('x').unfold().dedup()";

		String aaiQuery = "image('application-vendor','vendor') >  vserver(> generic-vnf('nf-type', 'nfType') ) > tenant > cloud-region*";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void cloud_region_fromVnfTest() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vnfc').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vnfc','vserver').store('x')"
				+ ".createEdgeTraversal(EdgeType.TREE, 'vserver','tenant').store('x')"
				+ ".createEdgeTraversal(EdgeType.TREE, 'tenant','cloud-region').store('x')"
				+ ".cap('x').unfold().dedup()";

		String aaiQuery = "generic-vnf('vnf-id','vnfId')  > vnfc* > vserver* > tenant* > cloud-region*";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void cloud_region_sitesTest() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region')."
				+ "getVerticesByProperty('cloud-owner','co').store('x').createEdgeTraversal(EdgeType.COUSIN, "
				+ "'cloud-region','complex').store('x').cap('x').unfold().dedup()";

		String aaiQuery = "cloud-region*('cloud-owner','co') > complex*";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void complex_fromVnf2Test() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').store('x').union("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'pserver','complex').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'pserver','complex').store('x')"
				+ ").cap('x').unfold().dedup()";

		String aaiQuery = "generic-vnf*('vnf-id','vnfId') > [ pserver* > complex*, "
				+ "  vserver > pserver* > complex* " + "]";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void complex_fromVnfTest2() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').store('x').union("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').store('x'))"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'pserver','complex').store('x')"
				+ ".cap('x').unfold().dedup()";

		String aaiQuery = "generic-vnf*('vnf-id','vnfId')   > [  pserver* , "
				+ "  vserver > pserver*  ] > complex*";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void fn_topology1Test() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'customer')"
				+ ".getVerticesByProperty('global-customer-id','a9a77d5a-123e-4ca2-9eb9-0b015d2ee0fb')"
				+ ".createEdgeTraversal(EdgeType.TREE, 'customer','service-subscription').getVerticesByProperty('service-subscription-id','Nimbus')"
				+ ".createEdgeTraversal(EdgeType.TREE, 'service-subscription','service-instance').getVerticesByProperty('service-instance-id','sid')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'service-instance','generic-vnf').store('x')"
				+ ".union(builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vnfc').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pnf').store('x')).cap('x').unfold().dedup()";

		String aaiQuery = "customer('global-customer-id', 'a9a77d5a-123e-4ca2-9eb9-0b015d2ee0fb') > service-subscription('service-subscription-id', 'Nimbus') "
				+ " > service-instance('service-instance-id','sid') > generic-vnf* "
				+ "  > [  vnfc* ,  vserver*,  pserver* ,  pnf* ]";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void vnf_Dsl() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').where(builder.newInstance().union(builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver')"
				+ ".getVerticesByProperty('hostname','hostname1'),builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').getVerticesByProperty('hostname','hostname1'))).store('x').cap('x').unfold().dedup()";

		String aaiQuery = "generic-vnf*('vnf-id','vnfId') (> [  pserver('hostname','hostname1'), "
				+ " vserver > pserver('hostname','hostname1')])";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

	@Test
	public void hasPropertyTest() throws AAIException {
		String aaiQuery = "cloud-region* ('cloud-owner')";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesByProperty('cloud-owner').store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void hasPropertyValuesTest() throws AAIException {
		String aaiQuery = "cloud-region* ('cloud-owner','cloud-owner1','cloud-owner2')";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesByProperty('cloud-owner', new ArrayList<>(Arrays.asList('cloud-owner1','cloud-owner2'))).store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void hasNotPropertyValuesTest() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner','cloud-owner1','cloud-owner2')";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner', new ArrayList<>(Arrays.asList('cloud-owner1','cloud-owner2'))).store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void hasNotPropertyNullValuesTest() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner',' ',' null ')";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner', new ArrayList<>(Arrays.asList(' ',' null '))).store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void hasPropertyIntegerTest() throws AAIException {
		String aaiQuery = "cloud-region('cloud-owner', 'att-nc')('cloud-region-id', 'MTN61a') > vlan-tag*('vlan-id-inner', 20)";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesByProperty('cloud-owner','att-nc').getVerticesByProperty('cloud-region-id','MTN61a').createEdgeTraversal(EdgeType.COUSIN, 'cloud-region','vlan-tag').getVerticesByProperty('vlan-id-inner',20).store('x').cap('x').unfold().dedup()";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void noEdgeRuleTest() throws AAIException {
		String aaiQuery = "vserver('vserver-id','abc') > logical-link* > l-interface*";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'vserver').getVerticesByProperty('vserver-id','abc').createEdgeTraversal(EdgeType.TREE, 'vserver','logical-link').store('x').createEdgeTraversal('logical-link','l-interface').store('x')cap('x').unfold().dedup()";
		expectedEx.expect(org.onap.aai.exceptions.AAIException.class);
		expectedEx.expectMessage("No EdgeRule found for passed nodeTypes: vserver, logical-link");
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void multipleEdgeRuleTest() throws AAIException {
		String aaiQuery = "vserver('vserver-id','abc') > l-interface* > lag-interface*";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'vserver').getVerticesByProperty('vserver-id','abc').createEdgeTraversal(EdgeType.TREE, 'vserver','l-interface').store('x').createEdgeTraversal( 'l-interface','lag-interface').store('x').cap('x').unfold().dedup()";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void multipleEdgeRuleTestWithLabels() throws AAIException {
		String aaiQuery = "vserver('vserver-id','abc') > l-interface* > ('org.onap.relationships.inventory.BelongsTo') lag-interface*";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'vserver').getVerticesByProperty('vserver-id','abc').createEdgeTraversal(EdgeType.TREE, 'vserver','l-interface').store('x').createEdgeTraversalWithLabels( 'l-interface','lag-interface', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.BelongsTo'))).store('x').cap('x').unfold().dedup()";
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void hasNotPropertyTest() throws AAIException {
		String aaiQuery = "cloud-region* !('cloud-owner')";
		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'cloud-region').getVerticesExcludeByProperty('cloud-owner').store('x').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void overlyNestedQueryTest() throws AAIException {
		String aaiQuery = "generic-vnf*('vnf-id','vnfId') (> [ pserver('hostname','hostname1'),  vserver (> [  pserver('hostname','hostname1'),  pserver('hostname','hostname1')])]) > vserver";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').where(builder.newInstance().union" +
				"(builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver').getVerticesByProperty('hostname','hostname1')," +
				"builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver').where(builder.newInstance().union(builder.newInstance()" +
				".createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').getVerticesByProperty('hostname','hostname1'),builder.newInstance()." +
				"createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').getVerticesByProperty('hostname','hostname1'))))).store('x').createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver').cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void overlyNestedQueryTestWithLabels() throws AAIException {
		String aaiQuery = "generic-vnf*('vnf-id','vnfId') (> [ ('tosca.relationships.HostedOn')pserver('hostname','hostname1'),  ('tosca.relationships.HostedOn')vserver (> [  ('tosca.relationships.HostedOn')pserver('hostname','hostname1'),  ('tosca.relationships.HostedOn')pserver('hostname','hostname1')])]) > ('org.onap.relationships.inventory.PartOf')allotted-resource";

		String dslQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').where(builder.newInstance().union" +
				"(builder.newInstance().createEdgeTraversalWithLabels( 'generic-vnf','pserver', new ArrayList<>(Arrays.asList('tosca.relationships.HostedOn'))).getVerticesByProperty('hostname','hostname1')," +
				"builder.newInstance().createEdgeTraversalWithLabels( 'generic-vnf','vserver', new ArrayList<>(Arrays.asList('tosca.relationships.HostedOn'))).where(builder.newInstance().union(builder.newInstance()" +
				".createEdgeTraversalWithLabels( 'vserver','pserver', new ArrayList<>(Arrays.asList('tosca.relationships.HostedOn'))).getVerticesByProperty('hostname','hostname1'),builder.newInstance()." +
				"createEdgeTraversalWithLabels( 'vserver','pserver', new ArrayList<>(Arrays.asList('tosca.relationships.HostedOn'))).getVerticesByProperty('hostname','hostname1'))))).store('x').createEdgeTraversalWithLabels( 'generic-vnf','allotted-resource', new ArrayList<>(Arrays.asList('org.onap.relationships.inventory.PartOf'))).cap('x').unfold().dedup()";

		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);
		assertEquals(dslQuery, query);
	}

	@Test
	public void nestedUnionQueryTest() throws AAIException {

		String builderQuery = "builder.getVerticesByProperty('aai-node-type', 'generic-vnf').getVerticesByProperty('vnf-id','vnfId').store('x').union("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','pserver').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','vserver')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vserver','pserver').store('x'))"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'pserver','complex').store('x')"
				+ ".union(builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'complex','availability-zone')"
				+ ".createEdgeTraversal(EdgeType.TREE, 'availability-zone','cloud-region').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'complex','cloud-region').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.TREE, 'complex','ctag-pool').store('x').union("
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'ctag-pool','availability-zone').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'availability-zone','complex').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'ctag-pool','generic-vnf').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'generic-vnf','availability-zone').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'availability-zone','complex').store('x'),"
				+ "builder.newInstance().createEdgeTraversal(EdgeType.COUSIN, 'ctag-pool','vpls-pe').store('x')"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'vpls-pe','complex').store('x'))"
				+ ".createEdgeTraversal(EdgeType.COUSIN, 'complex','cloud-region').store('x'))"
				+ ".createEdgeTraversal(EdgeType.TREE, 'cloud-region','tenant').store('x')"
				+ ".cap('x').unfold().dedup()";

		String aaiQuery = "generic-vnf*('vnf-id','vnfId')   > [  pserver* , "
				+ "  vserver > pserver*  ] > complex*  > [  availability-zone > cloud-region*,  cloud-region*,  " +
		          "  ctag-pool*  > [  availability-zone* > complex* ,   generic-vnf* > availability-zone* > complex*,  vpls-pe* > complex*] > cloud-region*] > tenant* " ;
		String query = dslQueryProcessor.parseAaiQuery(aaiQuery);

		assertEquals(builderQuery, query);
	}

}