old_contents: from sequana.gui.browser import Browser
  import pytest
  from pytestqt.qt_compat import qt_api
  
  
  def test_browser(qtbot):
      widget = Browser(url="sequana.readthedocs.io")
      widget.show()
      qtbot.addWidget(widget)
  
  
new_contents: from sequana.gui.browser import Browser
  import pytest
  from pytestqt.qt_compat import qt_api
  
  
  def test_browser(qtbot):
      widget = Browser(url="sequana.readthedocs.io")
      widget.show()
      qtbot.addWidget(widget)
      widget.wb.createWindow(None)
  
subject: add test