Ported test_data.cpp/hpp & test_flow.cpp from upstream slic3r,

thanks @lordofhyphens

tests/fff_print/test_data.hpp

@@ -0,0 +1,77 @@
+#ifndef SLIC3R_TEST_DATA_HPP
+#define SLIC3R_TEST_DATA_HPP
+
+#include "libslic3r/Point.hpp"
+#include "libslic3r/TriangleMesh.hpp"
+#include "libslic3r/Geometry.hpp"
+#include "libslic3r/Model.hpp"
+#include "libslic3r/Print.hpp"
+#include "libslic3r/Config.hpp"
+
+#include <unordered_map>
+
+namespace Slic3r { namespace Test {
+
+constexpr double MM_PER_MIN = 60.0;
+
+/// Enumeration of test meshes
+enum class TestMesh {
+    A,
+    L,
+    V,
+    _40x10,
+    cube_20x20x20,
+    sphere_50mm,
+    bridge,
+    bridge_with_hole,
+    cube_with_concave_hole,
+    cube_with_hole,
+    gt2_teeth,
+    ipadstand,
+    overhang,
+    pyramid,
+    sloping_hole,
+    slopy_cube,
+    small_dorito,
+    step,
+    two_hollow_squares
+};
+
+// Neccessary for <c++17
+struct TestMeshHash {
+    std::size_t operator()(TestMesh tm) const {
+        return static_cast<std::size_t>(tm);
+    }
+};
+
+/// Mesh enumeration to name mapping
+extern const std::unordered_map<TestMesh, const char*, TestMeshHash> mesh_names;
+
+/// Port of Slic3r::Test::mesh
+/// Basic cubes/boxes should call TriangleMesh::make_cube() directly and rescale/translate it
+TriangleMesh mesh(TestMesh m);
+
+TriangleMesh mesh(TestMesh m, Vec3d translate, Vec3d scale = Vec3d(1.0, 1.0, 1.0));
+TriangleMesh mesh(TestMesh m, Vec3d translate, double scale = 1.0);
+
+/// Templated function to see if two values are equivalent (+/- epsilon)
+template <typename T>
+bool _equiv(const T& a, const T& b) { return abs(a - b) < Slic3r::Geometry::epsilon; }
+
+template <typename T>
+bool _equiv(const T& a, const T& b, double epsilon) { return abs(a - b) < epsilon; }
+
+//Slic3r::Model model(const std::string& model_name, TestMesh m, Vec3d translate = Vec3d(0,0,0), Vec3d scale = Vec3d(1.0,1.0,1.0));
+//Slic3r::Model model(const std::string& model_name, TestMesh m, Vec3d translate = Vec3d(0,0,0), double scale = 1.0);
+
+Slic3r::Model model(const std::string& model_name, TriangleMesh&& _mesh);
+
+std::shared_ptr<Print> init_print(std::initializer_list<TestMesh> meshes, Slic3r::Model& model, std::shared_ptr<Slic3r::DynamicPrintConfig> _config = std::shared_ptr<Slic3r::DynamicPrintConfig>(Slic3r::DynamicPrintConfig::new_from_defaults()), bool comments = false);
+std::shared_ptr<Print> init_print(std::initializer_list<TriangleMesh> meshes, Slic3r::Model& model, std::shared_ptr<Slic3r::DynamicPrintConfig> _config = std::shared_ptr<Slic3r::DynamicPrintConfig>(Slic3r::DynamicPrintConfig::new_from_defaults()), bool comments = false);
+
+std::string gcode(std::shared_ptr<Print> print);
+
+} } // namespace Slic3r::Test
+
+
+#endif // SLIC3R_TEST_DATA_HPP