def test_set_attr_value():
t = Tag('<t n1=v1 n2=v2 n1=\'v3\'>c</t>')
t.set_attr('n1', 'v4')
t.set_attr('n2', 'v5')
assert t.string == '<t n1=v1 n2="v5" n1="v4">c</t>'
t.set_attr('id', '1')
assert t.string == '<t n1=v1 n2="v5" n1="v4" id="1">c</t>'
t = Tag('<t>c</t>')
t.set_attr('n', '')
assert t.string == '<t n>c</t>'
def test_set_attr_value(self):
t = Tag('<t n1=v1 n2=v2 n1=\'v3\'>c</t>')
t.set_attr('n1', 'v4')
t.set_attr('n2', 'v5')
self.assertEqual(t.string, '<t n1=v1 n2="v5" n1="v4">c</t>')
t.set_attr('id', '1')
self.assertEqual(t.string, '<t n1=v1 n2="v5" n1="v4" id="1">c</t>')
t = Tag('<t>c</t>')
t.set_attr('n', '')
self.assertEqual(t.string, '<t n>c</t>')
