[core] Add unit tests for queryFeatureExtensionsupstream/alexshalamov_queryFeatureExtensions

2 files changed, 3043 insertions, 0 deletions

diff --git a/test/api/query.test.cpp b/test/api/query.test.cpp
index 5960de3b31..7789afa9e7 100644
--- a/test/api/query.test.cpp
+++ b/test/api/query.test.cpp
@@ -5,9 +5,11 @@
 #include <mbgl/util/image.hpp>
 #include <mbgl/util/io.hpp>
 #include <mbgl/util/run_loop.hpp>
+#include <mbgl/style/layers/symbol_layer.hpp>
 #include <mbgl/style/style.hpp>
 #include <mbgl/style/image.hpp>
 #include <mbgl/style/source.hpp>
+#include <mbgl/style/sources/geojson_source.hpp>
 #include <mbgl/style/expression/dsl.hpp>
 #include <mbgl/renderer/renderer.hpp>
 #include <mbgl/gl/headless_frontend.hpp>
@@ -15,6 +17,7 @@
 using namespace mbgl;
 using namespace mbgl::style;
 using namespace mbgl::style::expression;
+using namespace std::literals;
 
 namespace {
 
@@ -127,3 +130,121 @@ TEST(Query, QuerySourceFeaturesFilter) {
     EXPECT_EQ(features3.size(), 1u);
 }
 
+TEST(Query, QueryFeatureExtensions) {
+    QueryTest test;
+    LatLng coordinate{0, 0};
+
+    test.fileSource.sourceResponse = [&] (const Resource& resource) {
+        EXPECT_EQ("http://url"s, resource.url);
+        Response response;
+        response.data = std::make_unique<std::string>(util::read_file("test/fixtures/supercluster/places.json"s));
+        return response;
+    };
+
+    GeoJSONOptions options{};
+    options.cluster = true;
+    auto source = std::make_unique<GeoJSONSource>("cluster_source"s, options);
+    source->setURL("http://url"s);
+    source->loadDescription(test.fileSource);
+
+    auto clusterLayer = std::make_unique<SymbolLayer>("cluster_layer"s, "cluster_source"s);
+    clusterLayer->setIconImage("test-icon"s);
+    clusterLayer->setIconSize(12.0f);
+
+    test.map.setLatLngZoom(coordinate, 0);
+    test.map.getStyle().addSource(std::move(source));
+    test.map.getStyle().addLayer(std::move(clusterLayer));
+    test.loop.runOnce();
+    test.frontend.render(test.map);
+
+    auto screenCoordinate = test.map.pixelForLatLng(coordinate);
+    const RenderedQueryOptions queryOptions({{{ "cluster_layer"s}}, {}});
+    auto topClusterFeature = test.frontend.getRenderer()->queryRenderedFeatures(screenCoordinate,
+                                                                                queryOptions);
+
+    EXPECT_EQ(topClusterFeature.size(), 1u);
+    const auto featureProps = topClusterFeature[0].properties;
+    auto clusterId = featureProps.find("cluster_id"s);
+    auto cluster   = featureProps.find("cluster"s);
+    EXPECT_TRUE(clusterId != featureProps.end());
+    EXPECT_TRUE(cluster != featureProps.end());
+
+    auto queryChildren = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                             topClusterFeature[0],
+                                                                             "supercluster"s,
+                                                                             "children"s);
+
+    auto unknownExt = test.frontend.getRenderer()->queryFeatureExtensions("source4"s,
+                                                                          topClusterFeature[0],
+                                                                          "unknown"s,
+                                                                          "children"s);
+    auto unknownValue = unknownExt.get<mbgl::Value>();
+    EXPECT_TRUE(unknownValue.is<NullValue>());
+
+    EXPECT_TRUE(queryChildren.is<FeatureCollection>());
+    auto children = queryChildren.get<FeatureCollection>();
+    EXPECT_EQ(children.size(), 4u);
+
+    // Compare results produced by supercluster with default clustering options.
+    EXPECT_EQ(children[0].properties["cluster_id"].get<uint64_t>(), 2u);
+    EXPECT_EQ(children[1].properties["cluster_id"].get<uint64_t>(), 34u);
+    EXPECT_EQ(children[2].properties["cluster_id"].get<uint64_t>(), 258u);
+    EXPECT_EQ(children[3].properties["cluster_id"].get<uint64_t>(), 2466u);
+    EXPECT_EQ(children[0].properties["point_count"].get<uint64_t>(), 7u);
+    EXPECT_EQ(children[1].properties["point_count"].get<uint64_t>(), 16u);
+    EXPECT_EQ(children[2].properties["point_count"].get<uint64_t>(), 7u);
+    EXPECT_EQ(children[3].properties["point_count"].get<uint64_t>(), 2u);
+
+    auto queryExpansionZoom1 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                                    topClusterFeature[0],
+                                                                                   "supercluster"s,
+                                                                                   "expansion-zoom"s);
+    auto queryExpansionZoom2 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                                   children[3],
+                                                                                   "supercluster"s,
+                                                                                   "expansion-zoom"s);
+    auto zoomValue1 = queryExpansionZoom1.get<mbgl::Value>();
+    auto zoomValue2 = queryExpansionZoom2.get<mbgl::Value>();
+    EXPECT_TRUE(zoomValue1.is<uint64_t>());
+    EXPECT_TRUE(zoomValue2.is<uint64_t>());
+    EXPECT_EQ(zoomValue1.get<uint64_t>(), 1u);
+    EXPECT_EQ(zoomValue2.get<uint64_t>(), 3u);
+
+    // Get leaves for cluster 1, with default limit 10, offset 0.
+    auto queryClusterLeaves = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                                  topClusterFeature[0],
+                                                                                  "supercluster"s,
+                                                                                  "leaves"s);
+    EXPECT_TRUE(queryClusterLeaves.is<FeatureCollection>());
+    auto leaves = queryClusterLeaves.get<FeatureCollection>();
+    EXPECT_EQ(leaves.size(), 10u);
+
+    // Get leaves for cluster 1, with limit 3, offset 0.
+    const std::map<std::string, mbgl::Value> limitOpts = { {"limit"s, static_cast<uint64_t>(3u)} };
+    auto queryClusterLeavesLimit3 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                                        topClusterFeature[0],
+                                                                                        "supercluster"s,
+                                                                                        "leaves"s,
+                                                                                        limitOpts);
+    auto limitLeaves3 = queryClusterLeavesLimit3.get<FeatureCollection>();
+    EXPECT_EQ(limitLeaves3.size(), 3u);
+
+    EXPECT_EQ(limitLeaves3[0].properties["name"].get<std::string>(), "Niagara Falls"s);
+    EXPECT_EQ(limitLeaves3[1].properties["name"].get<std::string>(), "Cape May"s);
+    EXPECT_EQ(limitLeaves3[2].properties["name"].get<std::string>(), "Cape Fear"s);
+
+    // Get leaves for cluster 1, with limit 3, offset 3.
+    const std::map<std::string, mbgl::Value> offsetOpts = { {"limit"s, static_cast<uint64_t>(3u)},
+                                                            {"offset"s, static_cast<uint64_t>(3u)} };
+    auto queryClusterLeavesOffset3 = test.frontend.getRenderer()->queryFeatureExtensions("cluster_source"s,
+                                                                                        topClusterFeature[0],
+                                                                                        "supercluster"s,
+                                                                                        "leaves"s,
+                                                                                        offsetOpts);
+    auto offsetLeaves3 = queryClusterLeavesOffset3.get<FeatureCollection>();
+    EXPECT_EQ(offsetLeaves3.size(), 3u);
+    EXPECT_EQ(offsetLeaves3[0].properties["name"].get<std::string>(), "Cape Hatteras"s);
+    EXPECT_EQ(offsetLeaves3[1].properties["name"].get<std::string>(), "Cape Sable"s);
+    EXPECT_EQ(offsetLeaves3[2].properties["name"].get<std::string>(), "Cape Cod"s);
+}
+
diff --git a/test/fixtures/supercluster/places.json b/test/fixtures/supercluster/places.json
new file mode 100644
index 0000000000..21ff7e542c
--- /dev/null
+++ b/test/fixtures/supercluster/places.json
@@ -0,0 +1,2922 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 2,
+        "name": "Niagara Falls",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 43.087653,
+        "long_x": -79.044073,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "waterfall"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-79.04411780507252, 43.08771393436908]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 2,
+        "name": "Salto Angel",
+        "comment": null,
+        "name_alt": "Angel Falls",
+        "lat_y": 5.686836,
+        "long_x": -62.061848,
+        "region": "South America",
+        "subregion": null,
+        "featureclass": "waterfall"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-62.06181800038502, 5.686896063275327]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 2,
+        "name": "Iguazu Falls",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -25.568265,
+        "long_x": -54.582842,
+        "region": "South America",
+        "subregion": null,
+        "featureclass": "waterfall"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-54.58299719960377, -25.568291925005923]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Gees Gwardafuy",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 11.812855,
+        "long_x": 51.235173,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [51.258313644180184, 11.822028799226407]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Victoria Falls",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -17.77079,
+        "long_x": 25.460133,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "waterfall"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [25.852793816021233, -17.928033135943423]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Wright I.",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -50.959168,
+        "long_x": -72.995002,
+        "region": "Antarctica",
+        "subregion": null,
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-116.89262854726002, -74.06670501094342]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Grant I.",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -50.959168,
+        "long_x": -72.995002,
+        "region": "Antarctica",
+        "subregion": null,
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-131.48540198476002, -74.48272063594342]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Newman I.",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -50.959168,
+        "long_x": -72.995002,
+        "region": "Antarctica",
+        "subregion": null,
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-145.68681800038502, -75.59185149531842]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Dean I.",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -50.959168,
+        "long_x": -72.995002,
+        "region": "Antarctica",
+        "subregion": null,
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-127.63438880116627, -74.50066497188092]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Canaveral",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 28.483713,
+        "long_x": -80.534941,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-80.53625603636821, 28.473056814472134]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Mendocino",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 40.350222,
+        "long_x": -124.323474,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-124.39201745043425, 40.44222065537283]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cabo San Lucas",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 22.887711,
+        "long_x": -109.969843,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-109.96983801991627, 22.887762762494077]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Churchill",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 58.752014,
+        "long_x": -93.182023,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-93.18211829335377, 58.75208161015033]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Cod",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 41.734867,
+        "long_x": -69.964865,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-70.03687833567446, 41.9914589934385]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape May",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 37.2017,
+        "long_x": -75.926791,
+        "region": "North America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-74.95121933164988, 38.92969645987068]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cabo de Hornos",
+        "comment": null,
+        "name_alt": "Cape Horn",
+        "lat_y": -55.862824,
+        "long_x": -67.169425,
+        "region": "South America",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-67.16942298085377, -55.86284758906842]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape of Good Hope",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -34.307311,
+        "long_x": 18.441206,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [18.441294792583733, -34.30718352656842]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Palmas",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 4.373924,
+        "long_x": -7.457356,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-7.457386848041267, 4.373968817181577]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cape Verde",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 14.732312,
+        "long_x": -17.471776,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-17.471730109760017, 14.732489324994077]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Cap Bon",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 37.073954,
+        "long_x": 11.024061,
+        "region": "Africa",
+        "subregion": null,
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [11.024180534771233, 37.07398102421283]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "Oceanic pole of inaccessibility",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -48.865032,
+        "long_x": -123.401986,
+        "region": "Seven seas (open ocean)",
+        "subregion": "South Pacific Ocean",
+        "featureclass": "pole"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-123.40202796132252, -48.86504485469342]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "South Magnetic Pole 2005 (est)",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -48.865032,
+        "long_x": -123.401986,
+        "region": "Antarctica",
+        "subregion": "Southern Ocean",
+        "featureclass": "pole"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [137.85425865977123, -64.51824309688092]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 3,
+        "name": "North Magnetic Pole 2005 (est)",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -48.865032,
+        "long_x": -123.401986,
+        "region": "Seven seas (open ocean)",
+        "subregion": "Arctic Ocean",
+        "featureclass": "pole"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-114.40569007069752, 82.71008942265033]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Lands End",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 50.069677,
+        "long_x": -5.668629,
+        "region": "Europe",
+        "subregion": "British Isles",
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-5.668629523822517, 50.06970856327533]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Cape York",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": 76.218919,
+        "long_x": -68.218612,
+        "region": "North America",
+        "subregion": "Greenland",
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-68.21861731679127, 76.21887848515033]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Nunap Isua",
+        "comment": null,
+        "name_alt": "Cape Farewell",
+        "lat_y": 59.862583,
+        "long_x": -43.90088,
+        "region": "North America",
+        "subregion": "Greenland",
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-43.90080725819752, 59.86267731327533]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Cape Vohimena",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -25.546355,
+        "long_x": 45.158683,
+        "region": "Africa",
+        "subregion": "Indian Ocean",
+        "featureclass": "cape"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [45.15870201914623, -25.546319268755923]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Vavau",
+        "comment": null,
+        "name_alt": null,
+        "lat_y": -18.590062,
+        "long_x": -173.976769,
+        "region": "Oceania",
+        "subregion": "Polynesia",
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-173.97673499257252, -18.590020440630923]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "I. de Pascua",
+        "comment": null,
+        "name_alt": "Easter I.",
+        "lat_y": -27.102117,
+        "long_x": -109.367953,
+        "region": "Oceania",
+        "subregion": "Polynesia",
+        "featureclass": "island"
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [-109.36790930897877, -27.102227471880923]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "scalerank": 4,
+        "name": "Cape Agulhas",
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