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import string
import unittest
from ..util import PseudoStr, StrProxy, Object
from .. import tool_imports_for_tests
with tool_imports_for_tests():
from c_analyzer.common.info import ID
from c_analyzer.symbols.info import Symbol
class SymbolTests(unittest.TestCase):
VALID_ARGS = (
ID('x/y/z/spam.c', 'func', 'eggs'),
Symbol.KIND.VARIABLE,
False,
)
VALID_KWARGS = dict(zip(Symbol._fields, VALID_ARGS))
VALID_EXPECTED = VALID_ARGS
def test_init_typical_binary_local(self):
id = ID(None, None, 'spam')
symbol = Symbol(
id=id,
kind=Symbol.KIND.VARIABLE,
external=False,
)
self.assertEqual(symbol, (
id,
Symbol.KIND.VARIABLE,
False,
))
def test_init_typical_binary_global(self):
id = ID('Python/ceval.c', None, 'spam')
symbol = Symbol(
id=id,
kind=Symbol.KIND.VARIABLE,
external=False,
)
self.assertEqual(symbol, (
id,
Symbol.KIND.VARIABLE,
False,
))
def test_init_coercion(self):
tests = [
('str subclass',
dict(
id=PseudoStr('eggs'),
kind=PseudoStr('variable'),
external=0,
),
(ID(None, None, 'eggs'),
Symbol.KIND.VARIABLE,
False,
)),
('with filename',
dict(
id=('x/y/z/spam.c', 'eggs'),
kind=PseudoStr('variable'),
external=0,
),
(ID('x/y/z/spam.c', None, 'eggs'),
Symbol.KIND.VARIABLE,
False,
)),
('non-str 1',
dict(
id=('a', 'b', 'c'),
kind=StrProxy('variable'),
external=0,
),
(ID('a', 'b', 'c'),
Symbol.KIND.VARIABLE,
False,
)),
('non-str 2',
dict(
id=('a', 'b', 'c'),
kind=Object(),
external=0,
),
(ID('a', 'b', 'c'),
'<object>',
False,
)),
]
for summary, kwargs, expected in tests:
with self.subTest(summary):
symbol = Symbol(**kwargs)
for field in Symbol._fields:
value = getattr(symbol, field)
if field == 'external':
self.assertIs(type(value), bool)
elif field == 'id':
self.assertIs(type(value), ID)
else:
self.assertIs(type(value), str)
self.assertEqual(tuple(symbol), expected)
def test_init_all_missing(self):
id = ID(None, None, 'spam')
symbol = Symbol(id)
self.assertEqual(symbol, (
id,
Symbol.KIND.VARIABLE,
None,
))
def test_fields(self):
id = ID('z', 'x', 'a')
symbol = Symbol(id, 'b', False)
self.assertEqual(symbol.id, id)
self.assertEqual(symbol.kind, 'b')
self.assertIs(symbol.external, False)
def test___getattr__(self):
id = ID('z', 'x', 'a')
symbol = Symbol(id, 'b', False)
filename = symbol.filename
funcname = symbol.funcname
name = symbol.name
self.assertEqual(filename, 'z')
self.assertEqual(funcname, 'x')
self.assertEqual(name, 'a')
def test_validate_typical(self):
id = ID('z', 'x', 'a')
symbol = Symbol(
id=id,
kind=Symbol.KIND.VARIABLE,
external=False,
)
symbol.validate() # This does not fail.
def test_validate_missing_field(self):
for field in Symbol._fields:
with self.subTest(field):
symbol = Symbol(**self.VALID_KWARGS)
symbol = symbol._replace(**{field: None})
with self.assertRaises(TypeError):
symbol.validate()
def test_validate_bad_field(self):
badch = tuple(c for c in string.punctuation + string.digits)
notnames = (
'1a',
'a.b',
'a-b',
'&a',
'a++',
) + badch
tests = [
('id', notnames),
('kind', ('bogus',)),
]
seen = set()
for field, invalid in tests:
for value in invalid:
if field != 'kind':
seen.add(value)
with self.subTest(f'{field}={value!r}'):
symbol = Symbol(**self.VALID_KWARGS)
symbol = symbol._replace(**{field: value})
with self.assertRaises(ValueError):
symbol.validate()
for field, invalid in tests:
if field == 'kind':
continue
valid = seen - set(invalid)
for value in valid:
with self.subTest(f'{field}={value!r}'):
symbol = Symbol(**self.VALID_KWARGS)
symbol = symbol._replace(**{field: value})
symbol.validate() # This does not fail.
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