/*
 * Copyright 2017-2020 Crown Copyright
 *
 * 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 uk.gov.gchq.gaffer.traffic.generator;

import org.apache.commons.io.LineIterator;
import org.junit.jupiter.api.Test;

import uk.gov.gchq.gaffer.commonutil.StreamUtil;
import uk.gov.gchq.gaffer.data.element.Edge;
import uk.gov.gchq.gaffer.data.element.Element;
import uk.gov.gchq.gaffer.data.element.Entity;
import uk.gov.gchq.gaffer.data.generator.OneToManyElementGenerator;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;

public class RoadTrafficStringElementGeneratorTest {

    @Test
    public void shouldParseSampleData() throws IOException {
        // Given
        final OneToManyElementGenerator<String> generator = new RoadTrafficStringElementGenerator();

        try (final InputStream inputStream = StreamUtil.openStream(getClass(), "/roadTrafficSampleData.csv")) {
            // When
            final Iterable<? extends Element> elements = generator.apply(() -> new LineIterator(new InputStreamReader(inputStream)));

            // Then
            int entityCount = 0;
            int edgeCount = 0;
            for (final Element element : elements) {
                if (element instanceof Entity) {
                    entityCount++;
                } else if (element instanceof Edge) {
                    edgeCount++;
                } else {
                    fail("Unrecognised element class: " + element.getClassName());
                }
            }

            assertEquals(1600, entityCount);
            assertEquals(700, edgeCount);
        }
    }

}
