/*-
 * ============LICENSE_START=======================================================
 * policy-yaml unit test
 * ================================================================================
 * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
 * Modifications Copyright (C) 2019 Nordix Foundation.
 * ================================================================================
 * 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.policy.controlloop.policy;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import org.junit.Test;
import org.onap.policy.common.utils.io.Serializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.DumperOptions.FlowStyle;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;


public class ControlLoopPolicyTest {
    private static final Logger logger = LoggerFactory.getLogger(ControlLoopPolicyTest.class);

    @Test
    public void test1() throws Exception {
        this.test("src/test/resources/v1.0.0/policy_Test.yaml");
    }

    @Test
    public void testvService1() throws Exception {
        this.test("src/test/resources/v1.0.0/policy_vService.yaml");
    }

    @Test
    public void testOpenLoop() throws Exception {
        this.test("src/test/resources/v1.0.0/policy_OpenLoop.yaml");
    }

    @Test
    public void testvdns() throws Exception {
        this.test("src/test/resources/v2.0.0/policy_ONAP_demo_vDNS.yaml");
    }

    @Test
    public void testvFirewall() {
        // Chenfei to fix this.
        // this.test("src/test/resources/v2.0.0/policy_ONAP_demo_vFirewall.yaml");
    }

    @Test
    public void testvcpe() throws Exception {
        this.test("src/test/resources/v2.0.0/policy_ONAP_UseCase_vCPE.yaml");
    }

    @Test
    public void testvpci() throws Exception {
        this.test("src/test/resources/v2.0.0/policy_ONAP_UseCase_vPCI.yaml");
    }

    @Test
    public void testvolte() throws Exception {
        this.test("src/test/resources/v2.0.0/policy_ONAP_UseCase_VOLTE.yaml");
    }

    /**
     * Does the actual test.
     *
     * @param testFile input file
     * @throws Exception if an error occurs
     */
    public void test(String testFile) throws Exception {
        try (InputStream is = new FileInputStream(new File(testFile))) {
            //
            // Read the yaml into our Java Object
            //
            Yaml yaml = new Yaml(new Constructor(ControlLoopPolicy.class));
            Object obj = yaml.load(is);
            assertNotNull(obj);
            assertTrue(obj instanceof ControlLoopPolicy);
            dump(obj);
            //
            // Now dump it to a yaml string
            //
            DumperOptions options = new DumperOptions();
            options.setDefaultFlowStyle(FlowStyle.BLOCK);
            options.setPrettyFlow(true);
            yaml = new Yaml(options);
            String dumpedYaml = yaml.dump(obj);
            logger.debug(dumpedYaml);
            //
            // Read that string back into our java object
            //
            Object newObject = yaml.load(dumpedYaml);
            dump(newObject);
            assertNotNull(newObject);
            assertTrue(newObject instanceof ControlLoopPolicy);
            assertEquals(obj, newObject);

            // test serialization
            ControlLoopPolicy policy = (ControlLoopPolicy) obj;
            ControlLoopPolicy policy2 = Serializer.roundTrip(policy);
            assertTrue(policy.equals(policy2));
        }
    }

    public void dump(Object obj) {
        logger.debug("Dumping ", obj.getClass().getCanonicalName());
        logger.debug("{}", obj);
    }
}