planetiler/flatmap-basemap/src/test/java/com/onthegomap/flatmap/basemap/layers/WaterwayTest.java

package com.onthegomap.flatmap.basemap.layers;

import static com.onthegomap.flatmap.TestUtils.newLineString;
import static com.onthegomap.flatmap.basemap.BasemapProfile.NATURAL_EARTH_SOURCE;
import static org.junit.jupiter.api.Assertions.assertEquals;

import com.onthegomap.flatmap.VectorTile;
import com.onthegomap.flatmap.geo.GeometryException;
import com.onthegomap.flatmap.reader.SimpleFeature;
import java.util.List;
import java.util.Map;
import org.junit.jupiter.api.Test;

public class WaterwayTest extends AbstractLayerTest {

  @Test
  public void testWaterwayImportantRiverProcess() {
    var charlesRiver = process(lineFeature(Map.of(
      "waterway", "river",
      "name", "charles river",
      "name:es", "es name"
    )));
    assertFeatures(14, List.of(Map.of(
      "class", "river",
      "name", "charles river",
      "name:es", "es name",
      "intermittent", 0,

      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 9,
      "_maxzoom", 14,
      "_buffer", 4d
    )), charlesRiver);
    assertFeatures(11, List.of(Map.of(
      "class", "river",
      "name", "charles river",
      "name:es", "es name",
      "intermittent", "<null>",
      "_buffer", 13.082664546679323
    )), charlesRiver);
    assertFeatures(10, List.of(Map.of(
      "class", "river",
      "_buffer", 26.165329093358647
    )), charlesRiver);
    assertFeatures(9, List.of(Map.of(
      "class", "river",
      "_buffer", 26.165329093358647
    )), charlesRiver);
  }

  @Test
  public void testWaterwayImportantRiverPostProcess() throws GeometryException {
    var line1 = new VectorTile.Feature(
      Waterway.LAYER_NAME,
      1,
      VectorTile.encodeGeometry(newLineString(0, 0, 10, 0)),
      Map.of("name", "river"),
      0
    );
    var line2 = new VectorTile.Feature(
      Waterway.LAYER_NAME,
      1,
      VectorTile.encodeGeometry(newLineString(10, 0, 20, 0)),
      Map.of("name", "river"),
      0
    );
    var connected = new VectorTile.Feature(
      Waterway.LAYER_NAME,
      1,
      VectorTile.encodeGeometry(newLineString(0, 0, 20, 0)),
      Map.of("name", "river"),
      0
    );

    assertEquals(
      List.of(),
      profile.postProcessLayerFeatures(Waterway.LAYER_NAME, 11, List.of())
    );
    assertEquals(
      List.of(line1, line2),
      profile.postProcessLayerFeatures(Waterway.LAYER_NAME, 12, List.of(line1, line2))
    );
    assertEquals(
      List.of(connected),
      profile.postProcessLayerFeatures(Waterway.LAYER_NAME, 11, List.of(line1, line2))
    );
  }

  @Test
  public void testWaterwaySmaller() {
    // river with no name is not important
    assertFeatures(14, List.of(Map.of(
      "class", "river",
      "brunnel", "bridge",

      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 12
    )), process(lineFeature(Map.of(
      "waterway", "river",
      "bridge", "1"
    ))));

    assertFeatures(14, List.of(Map.of(
      "class", "canal",
      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 12
    )), process(lineFeature(Map.of(
      "waterway", "canal",
      "name", "name"
    ))));

    assertFeatures(14, List.of(Map.of(
      "class", "stream",
      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 13
    )), process(lineFeature(Map.of(
      "waterway", "stream",
      "name", "name"
    ))));
  }

  @Test
  public void testWaterwayNaturalEarth() {
    assertFeatures(3, List.of(Map.of(
      "class", "river",
      "name", "<null>",
      "intermittent", "<null>",

      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 3,
      "_maxzoom", 3
    )), process(SimpleFeature.create(
      newLineString(0, 0, 1, 1),
      Map.of(
        "featurecla", "River",
        "name", "name"
      ),
      NATURAL_EARTH_SOURCE,
      "ne_110m_rivers_lake_centerlines",
      0
    )));

    assertFeatures(6, List.of(Map.of(
      "class", "river",
      "intermittent", "<null>",

      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 4,
      "_maxzoom", 5
    )), process(SimpleFeature.create(
      newLineString(0, 0, 1, 1),
      Map.of(
        "featurecla", "River",
        "name", "name"
      ),
      NATURAL_EARTH_SOURCE,
      "ne_50m_rivers_lake_centerlines",
      0
    )));

    assertFeatures(6, List.of(Map.of(
      "class", "river",
      "intermittent", "<null>",

      "_layer", "waterway",
      "_type", "line",
      "_minzoom", 6,
      "_maxzoom", 8
    )), process(SimpleFeature.create(
      newLineString(0, 0, 1, 1),
      Map.of(
        "featurecla", "River",
        "name", "name"
      ),
      NATURAL_EARTH_SOURCE,
      "ne_10m_rivers_lake_centerlines",
      0
    )));
  }
}