Add fuzzing tests

[pca006132]

Add fuzzing tests

[dasoya]

Hi, @pca006132 I am a senior college student in EWHA. I am interested in this project. I am new in using fuzz test but I implemented some graphics feature like ray tracing in OpenGL using C++.

I looked up your fuzz test implementations for the triangulator here
https://github.com/elalish/manifold/blob/master/test/polygon_fuzz.cpp

In this case, you've implemented tests for segfault/ memory corruption and infinite loops. I'm wondering if the CSG test is also designed to check whether the process of creating the AST can cause segmentation faults.

Additionally, I want to know if you've implemented any other fuzz test modules that I could use as a reference. I'm also interested in learning how CSG operations work. Thank you in advance for your suggestions.

[pca006132]

Creating the AST should not cause segfault, but converting the AST to actual CSG operations, i.e. interpreting the AST, can cause segfault. And no, polygon_fuzz.cpp is the only fuzz test module we have for now, but feel free to ask us anything about the underlying CSG operation.