test instantiation of meta and loader widgets

tests/test_unit/test_napari_widgets.py

@@ -1,4 +1,5 @@
 import pytest
+from qtpy.QtWidgets import QWidget
 
 from movement.napari.meta_widget import MovementMetaWidget
 
@@ -11,3 +12,31 @@ def meta_widget(make_napari_viewer) -> MovementMetaWidget:
     can be instantiated without crashing."""
     viewer = make_napari_viewer()
     return MovementMetaWidget(viewer)
+
+
+@pytest.fixture
+def loader_widget(meta_widget) -> QWidget:
+    """Fixture to expose the Loader widget for testing."""
+    # content() gets the QWidget inside the CollapsibleWidget
+    loader = meta_widget.loader.content()
+    return loader
+
+
+def test_meta_widget(meta_widget):
+    """Test that the meta widget is properly instantiated."""
+    assert meta_widget is not None
+    assert len(meta_widget.collapsible_widgets) >= 1
+
+    first_widget = meta_widget.collapsible_widgets[0]
+    assert first_widget._text == "Load"
+    assert first_widget.isExpanded()
+
+
+def test_loader_widget(loader_widget):
+    """Test that the loader widget is properly instantiated."""
+    assert loader_widget is not None
+    # Default values
+    assert loader_widget.source_software_combo.currentText() == "SLEAP"
+    assert loader_widget.fps_spinbox.value() == 50
+    assert loader_widget.file_path_edit.text() == ""
+    assert loader_widget.load_button.text() == "Load"