picogl.tests.test_legacy_glmesh

Unit tests for the LegacyGLMesh class in the PicoGL OpenGL backend.

This module contains a comprehensive suite of unit tests for verifying the correctness, robustness, and interface of the picogl.renderer.legacy_glmesh.LegacyGLMesh class, which manages GPU-resident mesh data for legacy OpenGL compatibility.

The tests cover:

• Object initialization with various mesh data

• from_mesh_data class method

• GPU buffer upload and allocation with legacy VBOs

• Dynamic attribute generation for layout descriptors

• OpenGL binding/unbinding operations with legacy client states

• Drawing operations with legacy OpenGL functions

• Context manager functionality

• Resource cleanup and memory management

• Error handling and edge cases

• Data validation and type conversion

Dependencies:

• unittest (standard library)

• unittest.mock.MagicMock for OpenGL function mocking

• numpy for test data

• picogl.renderer.legacy_glmesh.LegacyGLMesh

• picogl.renderer.meshdata.MeshData

To run the tests:

python -m unittest picogl.tests.test_legacy_glmesh

Classes

TestLegacyGLMesh

Test cases for LegacyGLMesh class.

Module Contents

class picogl.tests.test_legacy_glmesh.TestLegacyGLMesh(methodName='runTest')

Bases: unittest.TestCase

Test cases for LegacyGLMesh class.

setUp()

Set up test fixtures before each test method.

tearDown()

Clean up after each test method.

test_initialization_with_all_parameters()

Test LegacyGLMesh initialization with all parameters.

test_initialization_with_minimal_parameters()

Test LegacyGLMesh initialization with only vertices and faces.

test_initialization_with_empty_faces()

Test LegacyGLMesh initialization with empty faces raises error.

test_initialization_data_type_conversion()

Test that data is properly converted to correct types.

test_initialization_array_reshaping()

Test that arrays are properly reshaped.

test_from_mesh_data_with_all_attributes()

Test from_mesh_data with all MeshData attributes.

test_from_mesh_data_with_minimal_attributes()

Test from_mesh_data with minimal MeshData attributes.

test_from_mesh_data_without_uvs()

Test from_mesh_data without UVs attribute.

test_generate_dynamic_attributes_without_uvs()

Test generate_dynamic_attributes without UVs.

test_generate_dynamic_attributes_with_uvs()

Test generate_dynamic_attributes with UVs.

test_upload_first_time()

Test upload method for the first time.

test_upload_already_uploaded()

Test upload method when already uploaded.

test_upload_with_uvs()

Test upload method with UVs.

test_upload_without_uvs()

Test upload method without UVs.

test_upload_vbo_parameters()

Test that VBOs are added with correct parameters.

test_ebo_parameters()

Test that EBO is added with correct parameters.

test_bind_with_uploaded_mesh()

Test bind method with uploaded mesh.

test_bind_without_upload()

Test bind method without upload raises error.

test_unbind_with_vao()

Test unbind method with VAO.

test_unbind_without_vao()

Test unbind method without VAO.

test_delete_with_vao()

Test delete method with VAO.

test_delete_without_vao()

Test delete method without VAO.

test_context_manager()

Test that LegacyGLMesh can be used as a context manager.

test_draw_with_uploaded_mesh()

Test draw method with uploaded mesh.

test_draw_with_custom_mode()

Test draw method with custom drawing mode.

test_draw_without_upload()

Test draw method without upload handles error.

test_draw_with_exception_handling()

Test draw method with exception handling.

test_vertex_count_calculation()

Test vertex count calculation.

test_data_validation()

Test data validation and type checking.

test_default_color_generation()

Test default colour generation.

test_default_normal_generation()

Test default normal generation.

test_default_uv_generation()

Test default UV generation.

test_mesh_data_integration()

Test integration with MeshData class.

test_legacy_client_states_integration()

Test integration with legacy client states.

test_attribute_spec_properties()

Test that generated attributes have correct properties.

test_upload_layout_creation()

Test that layout is created with correct attributes.