/*
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright 2018-2019 AT&T
*=================================================================================
* Modifications Copyright 2018 IBM.
*=================================================================================
* 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.appc.dg.common.utils;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.util.HashMap;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;


public class JSONUtilTest {

    @Before
    public void setUp() {
    }

    @Test
    public void testFromJsonReader() {

        try {
            JSONUtilVnfTest jOut =
                    JSONUtil.fromJson(new FileReader("src/test/resources/data/input.json"), JSONUtilVnfTest.class);
            assertEquals("I1", jOut.getVnfId());
            assertEquals("T1", jOut.getVnfType());
        } catch (UncheckedIOException uioe) {
            fail(uioe.getMessage() + " Unchecked IO exception encountered");
        }
        catch (FileNotFoundException fnfe) {
            fail(fnfe.getMessage() + " File Not Found exception encountered");
        }

    }

    @Test
    public void testFromJsonException() {
        JSONUtilVnfTest jOut = null;
        try {
            jOut = JSONUtil.fromJson("{\"vnfId\":\"I2\",\"vnfType\"\"T2\"}", JSONUtilVnfTest.class);
        } catch (UncheckedIOException uioe) {
            assertEquals(jOut, null);
        }
    }

    @Test
    public void testFromToJsonStr() {
        JSONUtilVnfTest jRef = new JSONUtilVnfTest("I1", "T1");

        try {
            assertEquals(JSONUtil.toJson(jRef), "{\"vnfId\":\"I1\",\"vnfType\":\"T1\"}");
            jRef.setVnfId("I2");
            jRef.setVnfType("T2");
            assertEquals(JSONUtil.toJson(jRef), "{\"vnfId\":\"I2\",\"vnfType\":\"T2\"}");
            String refJson = JSONUtil.toJson(jRef);

            JSONUtilVnfTest jOut = JSONUtil.fromJson(refJson, JSONUtilVnfTest.class);
            assertEquals(jRef.getVnfId(), jOut.getVnfId());
            assertEquals(jRef.getVnfType(), jOut.getVnfType());

        } catch (UncheckedIOException uioe) {
            fail(uioe.getMessage() + " Unchecked IO exception encountered");
        }
    }

    @Test
    public void testExttractValues() {
        JSONUtilVnfTest jRef = new JSONUtilVnfTest("I2", "T2");

        try {

            String refJson = JSONUtil.toJson(jRef);


            Map<String, String> map = JSONUtil.extractPlainValues(refJson, "vnfId", "vnfType");

            HashMap<String, String> hashMap =
                    (map instanceof HashMap)
                        ? (HashMap) map
                        : new HashMap<String, String>(map);
            assertEquals(hashMap.get("vnfId"), "I2");
            assertEquals(hashMap.get("vnfType"), "T2");


        } catch (UncheckedIOException uioe) {
            fail(uioe.getMessage() + " Unchecked IO exception encountered");
        }
    }

    @Test(expected=UncheckedIOException.class)
    public void testCatchSectionOfToJson() throws IOException {
        JSONUtil.toJson(new Object());
    }
}