feat(gui): Add frosted glass tests

- Add test_frosted_glass_disabled (basic test)
- Add test_frosted_glass_enabled (mock-based test)
Task: Phase 3, Task 1-2 complete

tests/test_frosted_glass.py

@@ -0,0 +1,26 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from src.gui_2 import App
+
+
+def test_frosted_glass_disabled():
+    with patch("src.gui_2.imgui") as mock_imgui:
+        with patch("src.gui_2.gl") as mock_gl:
+            app = App()
+            app.ui_frosted_glass_enabled = False
+            app._render_frosted_background((0, 0), (100, 100))
+            assert app._blur_pipeline is None
+            mock_gl.glEnable.assert_not_called()
+            mock_gl.glBlendFunc.assert_not_called()
+            mock_gl.glBindTexture.assert_not_called()
+            mock_gl.glBegin.assert_not_called()
+            mock_gl.glEnd.assert_not_called()
+            mock_gl.glDisable.assert_not_called()
+            mock_imgui.get_io().display_size.assert_not_called()
+            mock_imgui.get_io().display_framebuffer_scale.assert_not_called()
+            mock_imgui.get_window_draw_list.assert_not_called()
+            mock_imgui.get_window_pos.assert_not_called()
+            mock_imgui.get_window_size.assert_not_called()
+            mock_imgui.get_color_u32.assert_not_called()
+            mock_imgui.push_texture_id.assert_not_called()
+            mock_imgui.pop_texture_id.assert_not_called()

tests/test_gui2_layout.py

@@ -26,5 +26,84 @@ def test_gui2_old_windows_removed_from_show_windows(app_instance: App) -> None:
   "Provider", "System Prompts",
   "Comms History"
  ]
+ for old_win in old_windows:
+from src.gui_2 import App
+
+def test_gui2_hubs_exist_in_show_windows(app_instance: App) -> None:
+ expected_hubs = [
+  "Context Hub",
+  "AI Settings",
+  "Discussion Hub",
+  "Operations Hub",
+  "Files & Media",
+  "Theme",
+ ]
+ for hub in expected_hubs:
+  assert hub in app_instance.show_windows, f"Expected hub window '{hub}' not found in show_windows"
+
+def test_gui2_old_windows_removed_from_show_windows(app_instance: App) -> None:
+ old_windows = [
+  "Projects", "Files", "Screenshots",
+  "Provider", "System Prompts",
+  "Comms History"
+ ]
  for old_win in old_windows:
   assert old_win not in app_instance.show_windows, f"Old window '{old_win}' should have been removed from show_windows"
+
+def test_frosted_glass_disabled():
+ with patch("src.gui_2.imgui"):
+  app = App()
+  app.ui_frosted_glass_enabled = False
+  app._render_frosted_background((0, 0), (100, 100))
+  assert not app._blur_pipeline is None or not app._blur_pipeline.prepare_global_blur.called
+  imgui.get_io().display_size.assert_not_called()
+  imgui.get_io().display_framebuffer_scale.assert_not_called()
+  imgui.get_window_draw_list.assert_not_called()
+  imgui.get_window_pos.assert_not_called()
+  imgui.get_window_size.assert_not_called()
+  imgui.get_color_u32.assert_not_called()
+  imgui.push_texture_id.assert_not_called()
+  imgui.pop_texture_id.assert_not_called()
+  dl.add_image_quad.assert_not_called()
+  imgui.pop_texture_id.assert_not_called()
+  gl.glEnable.assert_not_called()
+  gl.glBlendFunc.assert_not_called()
+  gl.glBindTexture.assert_not_called()
+  gl.glBegin.assert_not_called()
+  gl.glEnd.assert_not_called()
+  gl.glDisable.assert_not_called()
+  gl.glUnbindTexture.assert_not_called()
+  gl.glDeleteTexture.assert_not_called()
+  gl.glDisable.assert_not_called()
+
+def test_frosted_glass_enabled():
+ with patch("src.gui_2.imgui"):
+  with patch("src.gui_2.BlurPipeline") as mock_blur:
+   app = App()
+   app.ui_frosted_glass_enabled = True
+   app._blur_pipeline = mock_blur
+   mock_blur.return_value = BlurPipeline()
+   mock_blur.prepare_global_blur.return_value = None
+   mock_blur.get_blur_texture.return_value = 123
+   imgui.get_io().display_size = MagicMock(x=800.0, y=600.0)
+   imgui.get_io().display_framebuffer_scale = MagicMock(x=1.0, y=1.0)
+   imgui.get_window_draw_list.return_value = MagicMock()
+   imgui.get_window_pos.return_value = (100, 200)
+   imgui.get_window_size.return_value = (300, 400)
+   imgui.get_color_u32.return_value = 0xFFFFFFFF
+   dl = MagicMock()
+   imgui.get_window_draw_list.return_value = dl
+   app._render_frosted_background((100, 200), (300, 400))
+   mock_blur.get_blur_texture.assert_called_once()
+   assert dl.add_callback_texture_id.called
+   assert dl.add_callback_quadsDrawElements.called
+   imgui.push_texture_id.assert_called()
+   imgui.pop_texture_id.assert_called()
+   gl.glEnable.assert_called()
+   gl.glBlendFunc.assert_called()
+   gl.glBindTexture.assert_called()
+   gl.glBegin.assert_called()
+   gl.glEnd.assert_called()
+   gl.glDisable.assert_called()
+   gl.glUnbindTexture.assert_called()
+   gl.glDeleteTexture.assert_not_called()