Function exec6

test/unit/WhereTest.cpp:268–320

Support for filter that returns no point views.

// Support for filter that returns no point views.
void exec6(const std::string& where, size_t expKeep, size_t expViews,
    Stage::WhereMergeMode mm = Stage::WhereMergeMode::Auto)
{
    StageFactory factory;

    Stage *r = factory.createStage("readers.faux");
    Options ro;
    ro.add("count", 100);
    ro.add("bounds", BOX3D(0, 0, 100, 99, 9.9, 199));
    ro.add("mode", "ramp");
    r->setOptions(ro);

    class TestFilter : public Filter
    {
    public:
    TestFilter()
    {
        g_count = 0;
    }

    private:
        std::string getName() const
        { return "filters.test"; }

        PointViewSet run(PointViewPtr v)
        {
            PointViewSet s;
            if (v->empty())
                return s;

            g_count = v->size();
            s.insert(v);
            return s;
        }
    };

    TestFilter f;
    Options fo;
    fo.add("where", where);
    fo.add("where_merge", mm);
    f.setOptions(fo);
    f.setInput(*r);

    PointTable t;
    f.prepare(t);
    PointViewSet s = f.execute(t);
    EXPECT_EQ(s.size(), expViews);
    size_t total = 0;
    for (auto vp : s)
        total += vp->size();
    EXPECT_EQ(total, 100u);
    EXPECT_EQ(g_count, expKeep);
}


TEST(WhereTest, filter)