def test_maxlen(self):
for value in ('foo', True, 123):
with self.assert_raises(ValueError,
'Too long (maximum length is 2)'):
String(value, maxlen=2)
s = String(value, maxlen=99)
self.assertEqual(s, str(value))
def test_minlen(self):
for value in ('foo', True, 123):
with self.assert_raises(ValueError,
'Too short (minimum length is 5)'):
String(value, minlen=5)
s = String(value, minlen=1)
self.assertEqual(s, str(value))
def test_typename(self):
constructors = (Int.partial(min=-1, max=100),
Option.partial(options=('foo', 'bar')), String)
exp_typename = ' or '.join(
(Int.partial(min=-1, max=100).typename,
Option.partial(options=('foo', 'bar')).typename,
String.partial().typename))
mt = multitype(*constructors)
self.assertEqual(mt.typename, exp_typename)
inst = mt('hello')
self.assertEqual(inst.typename, exp_typename)
def test_syntax(self):
constructors = (Int.partial(min=-1, max=100),
Option.partial(options=('foo', 'bar')), String)
exp_syntax = ' or '.join(
(Int.partial(min=-1, max=100).syntax,
Option.partial(options=('foo', 'bar')).syntax,
String.partial().syntax))
mt = multitype(*constructors)
self.assertEqual(mt.syntax, exp_syntax)
inst = mt('hello')
self.assertEqual(inst.syntax, exp_syntax)
def test_regex(self):
assert String('f', regex='fo*') == 'f'
assert String('fo', regex='fo*') == 'fo'
assert String('foo', regex='fo*') == 'foo'
with self.assert_raises(ValueError, 'Invalid value'):
String('', regex='fo*')
with self.assert_raises(ValueError, 'Invalid value'):
String('f', regex='fo+')
with self.assert_raises(RuntimeError, "Invalid regex: 'f[?'"):
String('f', regex='f[?')
def test_syntax(self):
self.assertEqual(String('foo').syntax, 'string')
self.assertEqual(
String('foo', minlen=1).syntax, 'string (at least 1 character)')
self.assertEqual(
String('foo', minlen=2).syntax, 'string (at least 2 characters)')
self.assertEqual(
String('f', maxlen=1).syntax, 'string (at most 1 character)')
self.assertEqual(
String('f', maxlen=2).syntax, 'string (at most 2 characters)')
self.assertEqual(
String('f', minlen=1, maxlen=2).syntax, 'string (1-2 characters)')
self.assertEqual(
String('fo', minlen=2, maxlen=2).syntax, 'string (2 characters)')
def test_isinstance(self):
mt = multitype(Int, Tuple.partial(options=('foo', 'bar', 'baz')),
String.partial(minlen=1))
x = mt(49)
self.assertTrue(isinstance(x, mt))
self.assertTrue(isinstance(x, Int))
self.assertFalse(isinstance(x, String))
self.assertFalse(isinstance(x, Tuple))
x = mt('asdf')
self.assertTrue(isinstance(x, mt))
self.assertFalse(isinstance(x, Int))
self.assertTrue(isinstance(x, String))
self.assertFalse(isinstance(x, Tuple))
for value in (('foo', ), ('bar', 'baz')):
x = mt(*value)
self.assertTrue(isinstance(x, mt))
self.assertFalse(isinstance(x, Int))
self.assertFalse(isinstance(x, String))
self.assertTrue(isinstance(x, Tuple))
def test_syntax(self):
self.assertEqual(String('foo').syntax, 'string')
self.assertEqual(
String('foo', minlen=1).syntax, 'string (at least 1 character)')
self.assertEqual(
String('foo', minlen=2).syntax, 'string (at least 2 characters)')
self.assertEqual(
String('f', maxlen=1).syntax, 'string (at most 1 character)')
self.assertEqual(
String('f', maxlen=2).syntax, 'string (at most 2 characters)')
self.assertEqual(
String('f', minlen=1, maxlen=2).syntax, 'string (1-2 characters)')
self.assertEqual(
String('fo', minlen=2, maxlen=2).syntax, 'string (2 characters)')
self.assertEqual(
String('f', regex=r'fo*').syntax, "string (pattern=fo*)")
self.assertEqual(
String('f', regex=r'fo*', minlen=1).syntax,
"string (pattern=fo*, at least 1 character)")
self.assertEqual(
String('f', regex=r'fo*', maxlen=3).syntax,
"string (pattern=fo*, at most 3 characters)")
self.assertEqual(
String('f', regex=r'fo*', minlen=1, maxlen=3).syntax,
"string (pattern=fo*, 1-3 characters)")