WIP: fixing regressions in tests

tests/test_shader_live_editor.py

@@ -6,9 +6,20 @@ def test_shader_live_editor_renders():
  app = App()
  app.show_windows["Shader Editor"] = True
  
- with patch("src.gui_2.imgui") as mock_imgui:
+ with patch("src.gui_2.imgui") as mock_imgui, \
+      patch("src.gui_2.imscope") as mock_imscope:
   mock_imgui.begin.return_value = (True, True)
   mock_imgui.slider_float.return_value = (False, 1.0)
+  
+  # Setup imscope mocks
+  mock_imscope.window.return_value.__enter__.return_value = (True, True)
+  mock_imscope.child.return_value.__enter__.return_value = True
+  mock_imscope.table.return_value.__enter__.return_value = True
+  mock_imscope.tree_node_ex.return_value.__enter__.return_value = True
+  mock_imscope.tab_item.return_value.__enter__.return_value = (True, True)
+  mock_imscope.style_color.return_value.__enter__.return_value = None
+  mock_imscope.style_var.return_value.__enter__.return_value = None
+
   app._render_shader_live_editor()
   assert mock_imgui.begin.called
   assert mock_imgui.end.called