[test][assetwidget] Add more test

Tests added:
  - widget factory method
  - change on disk detection
  - root_prefix_path property

beat/editor/test/test_assetwidget.py

@@ -31,6 +31,7 @@ from PyQt5 import QtCore
 from PyQt5.QtWidgets import QMessageBox
 
 from ..widgets.assetwidget import AssetWidget
+from ..widgets.assetwidget import widget_for_asset_type
 from ..widgets.dialogs import AssetCreationDialog
 
 from ..widgets.editor import PlaceholderEditor
@@ -69,6 +70,11 @@ def asset_type_prefix_entry_map():
     }
 
 
+def test_widget_factory_error():
+    with pytest.raises(RuntimeError):
+        widget_for_asset_type("dummy")
+
+
 class TestAssetWidget:
     """Test that the AssetWidget works correctly"""
 
@@ -96,6 +102,13 @@ class TestAssetWidget:
 
             assert isinstance(asset_widget.current_editor, editor_type)
 
+    def test_prefix_root_path(self, qtbot, test_prefix, beat_context):
+        asset_widget = AssetWidget()
+        qtbot.addWidget(asset_widget)
+        asset_widget.set_context(beat_context)
+
+        assert asset_widget.prefix_root_path == test_prefix
+
     def test_dirty(
         self, qtbot, monkeypatch, test_prefix, beat_context, asset_type_prefix_entry_map
     ):
@@ -334,3 +347,33 @@ class TestAssetWidget:
 
         with qtbot.assertNotEmitted(asset_widget.currentAssetChanged):
             asset_widget.loadAsset(asset)
+
+    def test_change_on_disk(
+        self,
+        qtbot,
+        monkeypatch,
+        test_prefix,
+        beat_context,
+        asset_type,
+        asset_type_prefix_entry_map,
+    ):
+        asset_widget = AssetWidget()
+        qtbot.addWidget(asset_widget)
+        asset_widget.set_context(beat_context)
+
+        asset_name = asset_type_prefix_entry_map[asset_type][0]
+
+        monkeypatch.setattr(QMessageBox, "question", lambda *args: QMessageBox.Yes)
+
+        asset = Asset(test_prefix, asset_type, asset_name)
+        with qtbot.waitSignal(asset_widget.currentAssetChanged):
+            asset_widget.loadAsset(asset)
+
+        asset_widget.save_button.setEnabled(True)
+        declaration = asset.declaration
+        declaration["description"] = "modified"
+
+        with qtbot.waitSignal(asset_widget.watcher.fileChanged):
+            asset.declaration = declaration
+
+        assert not asset_widget.save_button.isEnabled()