mapnik/tests/cxx/copy_move_test.cpp

#include <mapnik/layer.hpp>
#include <mapnik/map.hpp>
#include <mapnik/color.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/datasource_cache.hpp>

#include <vector>
#include <algorithm>

#include "catch.hpp"


TEST_CASE("copy") {

SECTION("layers") {

    try
    {
        mapnik::Map m0(100,100);
        mapnik::Map m2(200,100);
        mapnik::datasource_cache::instance().register_datasources("plugins/input/shape.input");
        mapnik::parameters p;
        p["type"]="shape";
        p["file"]="demo/data/boundaries";
        p["encoding"]="latin1";
        auto ds0 = mapnik::datasource_cache::instance().create(p);

        auto ds1 = ds0; // shared ptr copy
        REQUIRE( (ds1 == ds0) );
        REQUIRE( (*ds1 != *ds0) );
        REQUIRE( (ds1.get() == ds0.get()) );
        ds1 = mapnik::datasource_cache::instance().create(p); // new with the same parameters
        REQUIRE( (ds1 != ds0) );
        REQUIRE( (*ds1 == *ds0) );
        auto ds2 = std::move(ds1);
        REQUIRE( (ds2 != ds0) );
        REQUIRE( (*ds2 == *ds0) );

        // mapnik::layer
        mapnik::layer l0("test-layer");
        l0.set_datasource(ds0);

        mapnik::layer l1 = l0; // copy assignment
        REQUIRE( (l1 == l0) );
        mapnik::layer l2(l0); // copy ctor
        REQUIRE( (l2 == l0) );
        mapnik::layer l3(mapnik::layer("test-layer")); // move ctor
        l3.set_datasource(ds2);

        REQUIRE( (l3 == l0) );
        mapnik::layer l4 = std::move(l3);
        REQUIRE( (l4 == l0) ); // move assignment

        m0.add_layer(l4);
        m0.set_background(mapnik::color("skyblue"));
        m2.set_background(mapnik::color("skyblue"));

        auto m1 = m0; //copy

        REQUIRE( (m0 == m1) );
        REQUIRE( (m0 != m2) );

        m2 = m1; // copy
        REQUIRE( (m2 == m1) );
        m2 = std::move(m1);
        REQUIRE( (m2 == m0) );
        REQUIRE( (m1 != m0) );

        REQUIRE( (m0 == m2) );
    }
    catch (std::exception const & ex)
    {
        std::clog << ex.what() << "\n";
        REQUIRE(false);
    }
}
}