+ def test_parse_remove(s):
+ def raise_UserWarning():
+ with s.parse("b='F'", level=99):
+ assert s.val('b') == 'F'
+ raise UserWarning
+ d0 = s.parse('a="000"')
+ d1 = s.parse("a='A'; b='B'; c='C'", level=10)
+ d2 = s.parse('c="{a}{a}"; b="XX" ', level=20)
+ d3 = s.parse('b+=c ', level=30)
+ assert s.val('b') == "XXAA"
+ s.t.remove(d2)
+ assert s.val('b') == "BC"
+ s.assertRaises(ValueError, s.t.remove, [('d', d1[0][1])])
+ s.assertRaises(ValueError, s.t.remove, [('b', d1[0][1])])
+ # Try exception in "with parse():"
+ s.assertRaises(UserWarning, raise_UserWarning)
+ assert s.val('b') == "BC"
+ # partially remove d1
+ s.t.remove([('c', d1[2][1])])
+ # try to remove rest - 'a' and 'b' should get removed
+ s.assertRaises(ValueError, s.t.remove, d1)
+ assert s.val('a') == "000"
+ # cleanup
+ s.t.remove(d3)
+ s.t.remove(d0)
+ for v in 'abcd':
+ assert len(s.var(v).operations) == 0
+