picogl.tests.test_texture_renderer
==================================

.. py:module:: picogl.tests.test_texture_renderer

.. autoapi-nested-parse::

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

   This module contains a comprehensive suite of unit tests for verifying the correctness,
   robustness, and interface of the :class:`picogl.renderer.texture.TextureRenderer`
   class, which provides specialized texture rendering functionality.

   The tests cover:

   - Object initialization and inheritance from ObjectRenderer
   - Texture initialization and loading
   - Path management and resolution
   - UV coordinate handling and inversion
   - 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.texture.TextureRenderer
       - picogl.renderer.meshdata.MeshData

   To run the tests::

       python -m unittest picogl.tests.test_texture_renderer



Classes
-------

.. autoapisummary::

   picogl.tests.test_texture_renderer.TestTextureRenderer


Module Contents
---------------

.. py:class:: TestTextureRenderer(methodName='runTest')

   Bases: :py:obj:`unittest.TestCase`


   Test cases for TextureRenderer class.


   .. py:method:: setUp()

      Set up test fixtures before each test method.



   .. py:method:: tearDown()

      Clean up after each test method.



   .. py:method:: test_initialization_with_default_parameters()

      Test TextureRenderer initialization with default parameters.



   .. py:method:: test_initialization_with_custom_parameters()

      Test TextureRenderer initialization with custom parameters.



   .. py:method:: test_initialization_with_path_objects()

      Test TextureRenderer initialization with Path objects.



   .. py:method:: test_initialization_with_none_base_dir()

      Test TextureRenderer initialization with None base_dir.



   .. py:method:: test_initialize_textures_with_normal_v_coords()

      Test initialize_textures with normal V coordinates.



   .. py:method:: test_initialize_textures_with_inversed_v_coords()

      Test initialize_textures with inversed V coordinates.



   .. py:method:: test_get_texture_filename()

      Test get_texture_filename method.



   .. py:method:: test_set_texture_filename()

      Test set_texture_filename method.



   .. py:method:: test_set_texture_filename_with_none()

      Test set_texture_filename method with None filename.



   .. py:method:: test_set_resource_path()

      Test set_resource_path method.



   .. py:method:: test_set_resource_path_with_path_object()

      Test set_resource_path method with Path object.



   .. py:method:: test_object_renderer_inheritance()

      Test that TextureRenderer inherits from ObjectRenderer.



   .. py:method:: test_vertex_count_calculation()

      Test vertex count calculation in initialization.



   .. py:method:: test_texture_loading_integration()

      Test texture loading integration with TextureLoader.



   .. py:method:: test_uv_coordinate_inversion_edge_cases()

      Test UV coordinate inversion with edge cases.



   .. py:method:: test_draw_selection_method()

      Test _draw_selection method exists and is callable.



   .. py:method:: test_initialization_with_minimal_mesh_data()

      Test initialization with minimal mesh data.



   .. py:method:: test_path_absolute_conversion()

      Test that paths are converted to absolute paths.



   .. py:method:: test_texture_gl_id_assignment()

      Test that texture_gl_id is properly assigned to context.



   .. py:method:: test_initialization_calls_initialize_textures()

      Test that initialization calls initialize_textures.