def test_collapsible_rendered(self):
from cocktail.html.element import Element
parent = Element()
# An element starts with no rendered children
self.assertFalse(parent.has_rendered_children())
# A collapsible element with no children is not rendered
parent.collapsible = True
self.assertFalse(parent.rendered)
# A collapsible element with visible children is rendered
child1 = Element()
parent.append(child1)
self.assertTrue(parent.has_rendered_children())
self.assertTrue(parent.rendered)
# A collapsible element with invisible children is not rendered
child1.visible = False
self.assertFalse(parent.has_rendered_children())
self.assertFalse(parent.rendered)
# A collapsible element with collapsible children without rendered
# children is not rendered
child1.visible = True
child1.collapsible = True
self.assertFalse(parent.has_rendered_children())
self.assertFalse(parent.rendered)
# The collapsible property applies recursively
grandchild1 = Element()
child1.append(grandchild1)
self.assertTrue(parent.has_rendered_children())
self.assertTrue(parent.rendered)
self.assertTrue(child1.has_rendered_children())
self.assertTrue(child1.rendered)
grandchild1.visible = False
self.assertFalse(parent.has_rendered_children())
self.assertFalse(parent.rendered)
self.assertFalse(child1.has_rendered_children())
self.assertFalse(child1.rendered)
# Just one rendered child suffices to get a collapsible element to be
# rendered
child2 = Element()
parent.append(child2)
self.assertTrue(parent.has_rendered_children())
self.assertTrue(parent.rendered)
def test_invisible_element_not_rendered(self):
from cocktail.html.element import Element
e = Element()
e.visible = False
self.assertEqual(self.get_html(e), "")
e.visible = True
e.collapsible = True
self.assertEqual(self.get_html(e), "")
child = Element()
child.visible = False
e.append(child)
self.assertEqual(self.get_html(e), "")
