def widget_layout_errors(fixture):
"""A Layout can only be used with a single Widget, and a Widget can only have a single Layout."""
widget_with_layout = Div(fixture.view).use_layout(Layout())
with expected(ProgrammerError):
widget_with_layout.use_layout(Layout())
re_used_layout = Layout()
widget_with_reused_layout = Div(fixture.view).use_layout(re_used_layout)
with expected(ProgrammerError):
Div(fixture.view).use_layout(re_used_layout)
def page_layout_content_layout(fixture):
"""A PageLayout can be given a Layout it should use to lay out its contents Div."""
contents_layout = Layout()
widget = HTML5Page(fixture.view).use_layout(
PageLayout(contents_layout=contents_layout))
vassert(widget.layout.contents.layout is contents_layout)
def test_page_layout_content_layout(web_fixture):
"""A PageLayout can be given a Layout it should use to lay out its contents Div."""
fixture = web_fixture
contents_layout = Layout()
widget = HTML5Page(fixture.view).use_layout(
PageLayout(contents_layout=contents_layout))
assert widget.layout.contents.layout is contents_layout