irrlicht/source/Irrlicht/tests/testCGLTFMeshFileLoader.cpp

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#include "inMemoryFile.h"
#define CATCH_CONFIG_MAIN
#include <catch.hpp>
#include <irrlicht.h>
class ScopedMesh
{
public:
ScopedMesh(irr::io::IReadFile* file)
: m_device { irr::createDevice(irr::video::EDT_NULL) }
, m_mesh { nullptr }
{
auto* smgr = m_device->getSceneManager();
m_mesh = smgr->getMesh(file);
}
ScopedMesh(const irr::io::path& filepath)
: m_device { irr::createDevice(irr::video::EDT_NULL) }
, m_mesh { nullptr }
{
auto* smgr = m_device->getSceneManager();
m_mesh = smgr->getMesh(filepath, "");
}
~ScopedMesh()
{
m_device->drop();
m_mesh = nullptr;
}
const irr::scene::IAnimatedMesh* getMesh() const
{
return m_mesh;
}
private:
irr::IrrlichtDevice* m_device;
irr::scene::IAnimatedMesh* m_mesh;
};
TEST_CASE("load empty gltf file") {
irr::io::InMemoryFile filebuf {"test.gltf", ""};
ScopedMesh sm { &filebuf };
CHECK(sm.getMesh() == nullptr);
}
TEST_CASE("minimal triangle has correct vertices") {
ScopedMesh sm { "source/Irrlicht/tests/assets/minimal_triangle.gltf" };
auto* mesh = sm.getMesh();
REQUIRE(mesh != nullptr);
REQUIRE(mesh->getMeshBufferCount() == 1);
auto* meshbuf = mesh->getMeshBuffer(0);
REQUIRE(meshbuf->getVertexCount() == 3);
auto* vertices = reinterpret_cast<irr::video::S3DVertex*>(
meshbuf->getVertices());
CHECK(vertices[0].Pos == irr::core::vector3df {0.0f, 0.0f, 0.0f});
CHECK(vertices[1].Pos == irr::core::vector3df {-1.0f, 0.0f, 0.0f});
CHECK(vertices[2].Pos == irr::core::vector3df {0.0f, 1.0f, 0.0f});
}
TEST_CASE("mesh loader returns nullptr when given null file pointer") {
ScopedMesh sm { nullptr };
CHECK(sm.getMesh() == nullptr);
}
TEST_CASE("invalid JSON returns nullptr") {
SECTION("missing closing brace") {
irr::io::InMemoryFile filebuf {"test.gltf", "{"};
ScopedMesh sm { &filebuf };
CHECK(sm.getMesh() == nullptr);
}
SECTION("missing colon") {
irr::io::InMemoryFile filebuf {"test.gltf", "{\"a\" \"b\"}"};
ScopedMesh sm { &filebuf };
CHECK(sm.getMesh() == nullptr);
}
}