def test_invalid_selection(self):
"""Test invalid selections.
In theory this should never happen, since ``ConstraintExpression``
object are constructly directly from existing children.
"""
with self.assertRaises(ConstraintExpressionError):
self.data[ConstraintExpression("a.e<1")]
with self.assertRaises(ConstraintExpressionError):
self.data[ConstraintExpression("a.d<foo")]
def test_regexp(self):
sequence = SequenceType("sequence")
sequence["name"] = BaseType("name")
sequence.data = IterData([
("John", "Paul", "George", "Ringo"),
], sequence)
filtered = sequence[ConstraintExpression('sequence.name=~"J.*"')]
self.assertEqual(list(filtered.iterdata()), [("John", )])
def test_or(self):
"""Expressions cannot be ORed."""
ce1 = ConstraintExpression("a>1")
ce2 = ConstraintExpression("b>0")
with self.assertRaises(ConstraintExpressionError):
ce1 | ce2
def test_and(self):
"""Test CE addition."""
ce1 = ConstraintExpression("a>1")
ce2 = ConstraintExpression("b>0")
ce3 = ce1 & ce2
self.assertEqual(str(ce3), "a>1&b>0")
def test_unicode(self):
"""Test unicode representation."""
ce = ConstraintExpression("a>1")
self.assertEqual(text_type(ce), "a>1")
def test_str(self):
"""Test string representation."""
ce = ConstraintExpression("a>1")
self.assertEqual(str(ce), "a>1")
def __lt__(self, other):
return ConstraintExpression('%s<%s' % (self.id, encode(other)))