IrregularTimeSeriesIndexTest.java

/**
 * Copyright (c) 2018, RTE (http://www.rte-france.com)
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * SPDX-License-Identifier: MPL-2.0
 */
package com.powsybl.timeseries;

import com.google.common.collect.Lists;
import com.google.common.testing.EqualsTester;
import com.powsybl.commons.json.JsonUtil;
import org.junit.jupiter.api.Test;

import java.time.Instant;
import java.util.Arrays;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;

/**
 * @author Geoffroy Jamgotchian {@literal <geoffroy.jamgotchian at rte-france.com>}
 */
class IrregularTimeSeriesIndexTest {

    @Test
    void test() {
        List<Instant> instants = Arrays.asList(Instant.parse("2015-01-01T00:00:00Z"),
            Instant.parse("2015-01-01T01:00:00Z"));
        IrregularTimeSeriesIndex index = IrregularTimeSeriesIndex.create(instants);
        assertEquals(IrregularTimeSeriesIndex.TYPE, index.getType());

        // test getters
        assertEquals("2015-01-01T00:00:00Z", index.getInstantAt(0).toString());
        assertEquals("2015-01-01T01:00:00Z", index.getInstantAt(1).toString());
        assertEquals(2, index.getPointCount());
    }

    @Test
    void testIteratorsAndStream() {
        List<Instant> instants = Arrays.asList(Instant.parse("2015-01-01T00:00:00Z"),
            Instant.parse("2015-01-01T01:00:00Z"));
        IrregularTimeSeriesIndex index = IrregularTimeSeriesIndex.create(instants);

        // test iterator and stream
        assertEquals(instants, index.stream().toList());
        assertEquals(instants, Lists.newArrayList(index.iterator()));
    }

    @Test
    void testToString() {
        List<Instant> instants = Arrays.asList(Instant.parse("2015-01-01T00:00:00Z"),
            Instant.parse("2015-01-01T01:00:00Z"));
        IrregularTimeSeriesIndex index = IrregularTimeSeriesIndex.create(instants);
        assertEquals(IrregularTimeSeriesIndex.TYPE, index.getType());

        // test to string
        assertEquals("IrregularTimeSeriesIndex(times=[2015-01-01T00:00:00Z, 2015-01-01T01:00:00Z])",
            index.toString());
    }

    @Test
    void testJsonSerialization() {
        List<Instant> instants = Arrays.asList(Instant.parse("2015-01-01T00:00:00Z"),
            Instant.parse("2015-01-01T01:00:00Z"));
        IrregularTimeSeriesIndex index = IrregularTimeSeriesIndex.create(instants);
        assertEquals(IrregularTimeSeriesIndex.TYPE, index.getType());

        // test json
        String jsonRefMillis = "[ 1420070400000, 1420074000000 ]";
        String jsonRef = "[ 1420070400000000000, 1420074000000000000 ]";
        String jsonMillis = index.toJson();
        String json = index.toJson(TimeSeriesIndex.ExportFormat.NANOSECONDS);
        assertEquals(jsonRefMillis, jsonMillis);
        assertEquals(jsonRef, json);
        IrregularTimeSeriesIndex index2 = JsonUtil.parseJson(json, jsonParser -> IrregularTimeSeriesIndex.parseJson(jsonParser, TimeSeriesIndex.ExportFormat.NANOSECONDS));
        assertNotNull(index2);
        assertEquals(index, index2);
        IrregularTimeSeriesIndex index3 = JsonUtil.parseJson(jsonMillis, IrregularTimeSeriesIndex::parseJson);
        assertNotNull(index3);
        assertEquals(index, index3);
    }

    @Test
    void testDeprecatedConstructor() {
        List<Instant> instants = Arrays.asList(Instant.parse("2015-01-01T00:00:00Z"),
            Instant.parse("2015-01-01T01:00:00Z"));
        IrregularTimeSeriesIndex index = IrregularTimeSeriesIndex.create(instants);
        assertEquals(IrregularTimeSeriesIndex.TYPE, index.getType());

        // Deprecated contructor
        IrregularTimeSeriesIndex index4 = new IrregularTimeSeriesIndex(instants.stream().mapToLong(Instant::toEpochMilli).toArray());
        assertEquals(index, index4);
    }

    @Test
    void testEquals() {
        new EqualsTester()
            .addEqualityGroup(IrregularTimeSeriesIndex.create(Instant.parse("2015-01-01T00:00:00Z")),
                IrregularTimeSeriesIndex.create(Instant.parse("2015-01-01T00:00:00Z")))
            .addEqualityGroup(IrregularTimeSeriesIndex.create(Instant.parse("2015-01-01T01:00:00Z")),
                IrregularTimeSeriesIndex.create(Instant.parse("2015-01-01T01:00:00Z")))
            .testEquals();
    }

    @Test
    void testConstructorError() {
        assertThrows(IllegalArgumentException.class, IrregularTimeSeriesIndex::create);
    }
}