test: Add tests for dark mode

Author: AlejandroFernandezLuces

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "ansys-tools-visualization-interface"
-version = "0.5.dev0"
+version = "0.7.dev0"
 description = "A Python visualization interface for PyAnsys libraries"
 readme = "README.rst"
 requires-python = ">=3.10,<4"

tests/test_generic_plotter.py

@@ -148,3 +148,33 @@ def test_screenshot(tmp_path):
     pl.plot(sphere)
     pl.show(screenshot=tmp_path / "screenshot.png")
     assert Path(tmp_path / "screenshot.png").is_file()
+
+
+def test_dark_mode():
+    """Test dark mode different functionalities."""
+    # Test auto dark mode
+    sphere = pv.Sphere()
+    pl = Plotter()
+    pl.backend.scene.background_color = [10, 10, 10]
+    pl.plot(sphere)
+    pl.show()
+
+    # Test auto dark mode below threshold
+    sphere = pv.Sphere()
+    pl = Plotter()
+    pl.backend.scene.background_color = [10, 10, 10]
+    pl.plot(sphere)
+    pl.show()
+
+    # Test auto dark mode above threshold
+    sphere = pv.Sphere()
+    pl = Plotter()
+    pl.backend.scene.background_color = [0, 121, 255]
+    pl.plot(sphere)
+    pl.show()
+
+    # Test manual dark mode
+    sphere = pv.Sphere()
+    pl = Plotter()
+    pl.plot(sphere)
+    pl.show(dark_mode=True)