Code cleanup/comments, more test coverage (92%)

tests/test_editor_features_more.py

@@ -10,6 +10,7 @@ from PySide6.QtTest import QTest
 from bouquin.editor import Editor
 from bouquin.theme import ThemeManager, ThemeConfig
 
+
 @pytest.fixture(scope="module")
 def app():
     a = QApplication.instance()
@@ -17,6 +18,7 @@ def app():
         a = QApplication([])
     return a
 
+
 @pytest.fixture
 def editor(app, qtbot):
     themes = ThemeManager(app, ThemeConfig())
@@ -25,6 +27,7 @@ def editor(app, qtbot):
     e.show()
     return e
 
+
 def test_todo_prefix_converts_to_checkbox_on_space(editor):
     editor.clear()
     editor.setPlainText("TODO")
@@ -35,6 +38,7 @@ def test_todo_prefix_converts_to_checkbox_on_space(editor):
     # Now the line should start with the checkbox glyph and a space
     assert editor.toPlainText().startswith("☐ ")
 
+
 def test_enter_inside_empty_code_frame_jumps_out(editor):
     editor.clear()
     editor.setPlainText("")  # single empty block
@@ -46,13 +50,17 @@ def test_enter_inside_empty_code_frame_jumps_out(editor):
     txt = editor.toPlainText()
     assert "\n" in txt  # a normal paragraph created after exiting the frame
 
+
 def test_insertFromMimeData_with_data_image(editor):
     # Build an in-memory PNG and embed as data URL inside HTML
     img = QImage(8, 8, QImage.Format_ARGB32)
-    img.fill(0xff00ff00)  # green
+    img.fill(0xFF00FF00)  # green
     ba = QByteArray()
     from PySide6.QtCore import QBuffer, QIODevice
-    buf = QBuffer(ba); buf.open(QIODevice.WriteOnly); img.save(buf, "PNG")
+
+    buf = QBuffer(ba)
+    buf.open(QIODevice.WriteOnly)
+    img.save(buf, "PNG")
     data_b64 = base64.b64encode(bytes(ba)).decode("ascii")
     html = f'<img src="data:image/png;base64,{data_b64}"/>'
 
@@ -64,6 +72,7 @@ def test_insertFromMimeData_with_data_image(editor):
     h = editor.to_html_with_embedded_images()
     assert "data:image/png;base64," in h
 
+
 def test_toggle_checkboxes_selection(editor):
     editor.clear()
     editor.setPlainText("item 1\nitem 2")
@@ -79,6 +88,7 @@ def test_toggle_checkboxes_selection(editor):
     editor.toggle_checkboxes()
     assert not editor.toPlainText().startswith("☐ ")
 
+
 def test_heading_then_enter_reverts_to_normal(editor):
     editor.clear()
     editor.setPlainText("A heading")