test_for_each_point.cpp

// Description: Testing for grid traversal
// Documentation: unit_testing.txt

#include "test/test_init.h"

#include <pastel/sys/for_each_point.h>

TEST_CASE("for_each_point (for_each_point)")
{
    using Point = Vector2i;
    using Box = AlignedBox2i;

    std::vector<Point> pointSet;

    auto report = [&](const Point& point)
    {
        pointSet.emplace_back(point);
    };

    {
        forEachPoint(
            Box(Point(3, 3), Point(3, 3)),
            report);

        REQUIRE(pointSet.empty());
    }

    {
        forEachPoint(
            Box(Point(3, 3), Point(0, 2)),
            report);

        REQUIRE(pointSet.empty());
    }

    {
        std::vector<Point> correctSet =
        {
            {1, 2},
            {2, 2},
            {1, 3},
            {2, 3},
            {1, 4},
            {2, 4},
        };

        pointSet.clear();
        forEachPoint(
            Box(Point(1, 2), Point(3, 5)),
            report);

        REQUIRE(boost::equal(pointSet, correctSet));
    }

    {
        std::vector<Point> correctSet =
        {
            {1, 2},
            {1, 3},
            {1, 4},
            {2, 2},
            {2, 3},
            {2, 4},
        };

        pointSet.clear();
        forEachPoint<false>(
            Box(Point(1, 2), Point(3, 5)),
            report);

        REQUIRE(boost::equal(pointSet, correctSet));
    }
}