basic unit test for feature_style_processor (#3766)
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talaj
Artem Pavlenko
parent
c80cde6044
commit
c7c10fed46
1 changed files with 254 additions and 0 deletions
254
test/unit/renderer/feature_style_processor.cpp
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test/unit/renderer/feature_style_processor.cpp
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#include "catch.hpp"
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#include <mapnik/memory_datasource.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/feature_factory.hpp>
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#include <mapnik/map.hpp>
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#include <mapnik/params.hpp>
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#include <mapnik/expression.hpp>
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#include <mapnik/layer.hpp>
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#include <mapnik/rule.hpp>
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#include <mapnik/feature_style_processor.hpp>
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#include <mapnik/feature_style_processor_impl.hpp>
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#include <mapnik/value/types.hpp>
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#include <mapnik/symbolizer.hpp>
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#include <mapnik/geometry/geometry_type.hpp>
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struct rendering_result
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{
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unsigned start_map_processing = 0;
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unsigned end_map_processing = 0;
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unsigned end_layer_processing = 0;
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unsigned start_style_processing = 0;
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unsigned end_style_processing = 0;
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std::vector<mapnik::box2d<double>> layer_query_extents;
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std::vector<mapnik::geometry::geometry<double>> geometries;
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};
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class test_renderer : public mapnik::feature_style_processor<test_renderer>
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{
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public:
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using processor_impl_type = test_renderer;
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test_renderer(mapnik::Map const& map, rendering_result & result)
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: mapnik::feature_style_processor<test_renderer>(map),
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result_(result),
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painted_(false),
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vars_()
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{
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}
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void start_map_processing(mapnik::Map const& map)
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{
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result_.start_map_processing++;
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}
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void end_map_processing(mapnik::Map const& map)
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{
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result_.end_map_processing++;
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}
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void start_layer_processing(mapnik::layer const& lay, mapnik::box2d<double> const& query_extent)
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{
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result_.layer_query_extents.push_back(query_extent);
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}
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void end_layer_processing(mapnik::layer const& lay)
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{
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result_.end_layer_processing++;
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}
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void start_style_processing(mapnik::feature_type_style const& st)
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{
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result_.start_style_processing++;
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}
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void end_style_processing(mapnik::feature_type_style const& st)
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{
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result_.end_style_processing++;
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}
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template <typename Symbolizer>
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void process(Symbolizer const& sym, mapnik::feature_impl & feature, mapnik::proj_transform const& prj_trans)
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{
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result_.geometries.push_back(feature.get_geometry());
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}
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bool process(mapnik::rule::symbolizers const&, mapnik::feature_impl&, mapnik::proj_transform const& )
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{
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return false;
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}
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double scale_factor() const
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{
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return 1;
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}
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mapnik::attributes const& variables() const
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{
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return vars_;
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}
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mapnik::eAttributeCollectionPolicy attribute_collection_policy() const
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{
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return mapnik::eAttributeCollectionPolicy::DEFAULT;
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}
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bool painted() const
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{
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return painted_;
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}
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void painted(bool painted)
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{
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painted_ = painted;
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}
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private:
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rendering_result & result_;
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bool painted_;
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mapnik::attributes vars_;
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};
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std::shared_ptr<mapnik::memory_datasource> prepare_datasource()
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{
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mapnik::parameters params;
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params["type"] = "memory";
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using datasource_ptr = std::shared_ptr<mapnik::memory_datasource>;
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datasource_ptr datasource = std::make_shared<mapnik::memory_datasource>(params);
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mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
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{
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mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx, 1));
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mapnik::geometry::point<double> point(1, 2);
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feature->set_geometry(std::move(point));
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datasource->push(feature);
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}
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{
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mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx, 2));
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mapnik::geometry::line_string<double> path;
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path.emplace_back(-10, 0);
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path.emplace_back(0, 20);
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path.emplace_back(10, 0);
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path.emplace_back(15, 5);
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feature->set_geometry(std::move(path));
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datasource->push(feature);
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}
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return datasource;
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}
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mapnik::Map prepare_map()
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{
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mapnik::Map map(256, 256);
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mapnik::feature_type_style lines_style;
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mapnik::rule rule;
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mapnik::line_symbolizer line_sym;
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rule.append(std::move(line_sym));
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lines_style.add_rule(std::move(rule));
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map.insert_style("lines", std::move(lines_style));
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mapnik::layer lyr("layer");
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lyr.set_datasource(prepare_datasource());
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lyr.add_style("lines");
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map.add_layer(lyr);
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map.zoom_all();
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return map;
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}
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TEST_CASE("feature_style_processor") {
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SECTION("test_renderer") {
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mapnik::Map map(prepare_map());
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rendering_result result;
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test_renderer renderer(map, result);
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renderer.apply();
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REQUIRE(renderer.painted());
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REQUIRE(result.start_map_processing == 1);
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REQUIRE(result.end_map_processing == 1);
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REQUIRE(result.end_layer_processing == 1);
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REQUIRE(result.start_style_processing == 1);
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REQUIRE(result.end_style_processing == 1);
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REQUIRE(result.layer_query_extents.size() == 1);
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const mapnik::box2d<double> reference_query_extent(-10, 0, 15, 20);
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REQUIRE(result.layer_query_extents.front() == reference_query_extent);
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REQUIRE(result.geometries.size() == 2);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
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}
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SECTION("test_renderer - apply() with single layer") {
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mapnik::Map map(prepare_map());
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rendering_result result;
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test_renderer renderer(map, result);
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std::set<std::string> attributes;
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mapnik::layer & layer = map.get_layer(0);
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renderer.apply(layer, attributes);
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REQUIRE(renderer.painted());
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REQUIRE(result.start_map_processing == 1);
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REQUIRE(result.end_map_processing == 1);
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REQUIRE(result.end_layer_processing == 1);
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REQUIRE(result.start_style_processing == 1);
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REQUIRE(result.end_style_processing == 1);
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REQUIRE(result.layer_query_extents.size() == 1);
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const mapnik::box2d<double> reference_query_extent(-10, 0, 15, 20);
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REQUIRE(result.layer_query_extents.front() == reference_query_extent);
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REQUIRE(result.geometries.size() == 2);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
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}
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SECTION("test_renderer - apply_to_layer") {
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mapnik::Map map(prepare_map());
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rendering_result result;
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test_renderer renderer(map, result);
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std::set<std::string> attributes;
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mapnik::projection map_proj(map.srs(), true);
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mapnik::layer & layer = map.get_layer(0);
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renderer.apply_to_layer(layer,
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renderer,
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map_proj,
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map.scale(),
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map.scale_denominator(),
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map.width(),
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map.height(),
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map.get_current_extent(),
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0,
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attributes);
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REQUIRE(renderer.painted());
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REQUIRE(result.start_map_processing == 0);
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REQUIRE(result.end_map_processing == 0);
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REQUIRE(result.end_layer_processing == 1);
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REQUIRE(result.start_style_processing == 1);
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REQUIRE(result.end_style_processing == 1);
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REQUIRE(result.layer_query_extents.size() == 1);
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const mapnik::box2d<double> reference_query_extent(-10, 0, 15, 20);
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REQUIRE(result.layer_query_extents.front() == reference_query_extent);
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REQUIRE(result.geometries.size() == 2);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
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REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
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}
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}
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