feat(shaders): Create ShaderManager with basic compilation

tests/test_shader_manager.py

@@ -0,0 +1,25 @@
+import pytest
+from unittest.mock import patch, MagicMock
+
+def test_shader_manager_initialization_and_compilation():
+ # Import inside test to allow patching OpenGL before import if needed
+ # In this case, we patch the OpenGL.GL functions used by ShaderManager
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glCreateProgram.return_value = 1
+  mock_gl.glCreateShader.return_value = 2
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  
+  from src.shader_manager import ShaderManager
+  
+  manager = ShaderManager()
+  
+  # Basic vertex and fragment shader source
+  vert_src = "void main() {}"
+  frag_src = "void main() {}"
+  
+  program_id = manager.compile_shader(vert_src, frag_src)
+  
+  assert program_id == 1
+  assert mock_gl.glCreateProgram.called
+  assert mock_gl.glCreateShader.called