Add test file for glTF mesh loading

CMakeLists.txt

@@ -38,6 +38,7 @@ if(NOT CMAKE_BUILD_TYPE)
 endif()
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+add_subdirectory(source/lib/catch2)
 add_subdirectory(source/lib/tinygltf)
 add_subdirectory(source/Irrlicht)
 

source/Irrlicht/CMakeLists.txt

@@ -321,6 +321,8 @@ if(WIN32)
 	set_target_properties(IrrlichtMt PROPERTIES PREFIX "") # for DLL name
 endif()
 
+add_subdirectory(tests)
+
 # Installation of library
 if(ANDROID)
 	set(INSTALL_TARGETS IrrlichtMt native_app_glue)

source/Irrlicht/tests/CMakeLists.txt

@@ -0,0 +1,21 @@
+add_executable(tests
+	inMemoryFile.cpp inMemoryFile.h
+	testCGLTFMeshFileLoader.cpp
+)
+
+set_target_properties(tests PROPERTIES
+	CXX_STANDARD 11
+	CXX_STANDARD_REQUIRED YES
+	CXX_EXTENSIONS NO
+)
+
+target_compile_options(tests
+	PRIVATE
+		"$<$<CXX_COMPILER_ID:GNU>:-Wall>"
+)
+
+target_link_libraries(tests
+	PRIVATE
+		Catch2::Catch
+		IrrlichtMt::IrrlichtMt
+)

source/Irrlicht/tests/inMemoryFile.cpp

@@ -0,0 +1,54 @@
+#include "inMemoryFile.h"
+
+#include <irrlicht.h>
+
+#include <ios>
+
+namespace irr
+{
+
+namespace io
+{
+
+InMemoryFile::InMemoryFile(const io::path& filename, const std::string& s)
+	: m_filename { filename }
+	, m_sstream { s }
+{
+}
+
+std::size_t InMemoryFile::read(void* buffer, std::size_t sizeToRead)
+{
+	m_sstream.read(reinterpret_cast<char*>(buffer), sizeToRead);
+	return m_sstream.gcount();
+}
+
+bool InMemoryFile::seek(long finalPos, bool relativeMovement)
+{
+	if (relativeMovement) {
+		m_sstream.seekg(finalPos, std::ios::beg);
+	} else {
+		m_sstream.seekg(finalPos);
+	}
+
+	return m_sstream.fail();
+}
+
+long InMemoryFile::getSize() const
+{
+	return m_sstream.str().size();
+}
+
+long InMemoryFile::getPos() const
+{
+	return m_sstream.tellg();
+}
+
+const io::path& InMemoryFile::getFileName() const
+{
+	return m_filename;
+}
+
+} // namespace irr
+
+} // namespace io
+

source/Irrlicht/tests/inMemoryFile.h

@@ -0,0 +1,32 @@
+#include <irrlicht.h>
+
+#include <cstddef>
+#include <sstream>
+#include <string>
+
+namespace irr
+{
+
+namespace io
+{
+
+class InMemoryFile: public IReadFile
+{
+public:
+	InMemoryFile(const io::path& filename, const std::string& s);
+
+	std::size_t read(void* buffer, std::size_t sizeToRead) override;
+	bool seek(long finalPos, bool relativeMovement=false) override;
+	long getSize() const override;
+	long getPos() const override;
+	const io::path& getFileName() const override;
+
+private:
+	io::path m_filename;
+	mutable std::stringstream m_sstream;
+};
+
+} // namespace io
+
+} // namespace irr
+

source/Irrlicht/tests/testCGLTFMeshFileLoader.cpp

@@ -0,0 +1,18 @@
+#include "inMemoryFile.h"
+
+#define CATCH_CONFIG_MAIN
+#include <catch.hpp>
+#include <irrlicht.h>
+
+TEST_CASE("load empty gltf file") {
+	irr::IrrlichtDevice* device { irr::createDevice(irr::video::EDT_NULL) };
+	irr::scene::ISceneManager* smgr { device->getSceneManager() };
+
+	irr::io::InMemoryFile filebuf{"test.gltf", ""};
+
+	auto* mesh { smgr->getMesh(&filebuf) };
+	REQUIRE(mesh == nullptr);
+
+	device->drop();
+}
+

source/lib/catch2/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(Catch2
+  LANGUAGES CXX
+)
+
+add_library(Catch2 INTERFACE)
+add_library(Catch2::Catch ALIAS Catch2)
+
+target_include_directories(Catch2
+  INTERFACE
+    "${PROJECT_SOURCE_DIR}"
+)