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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 UNKNOWN, ID
from c_analyzer.variables.info import (
normalize_vartype, Variable
)
class NormalizeVartypeTests(unittest.TestCase):
def test_basic(self):
tests = [
(None, None),
('', ''),
('int', 'int'),
(PseudoStr('int'), 'int'),
(StrProxy('int'), 'int'),
]
for vartype, expected in tests:
with self.subTest(vartype):
normalized = normalize_vartype(vartype)
self.assertEqual(normalized, expected)
class VariableTests(unittest.TestCase):
VALID_ARGS = (
('x/y/z/spam.c', 'func', 'eggs'),
'static',
'int',
)
VALID_KWARGS = dict(zip(Variable._fields, VALID_ARGS))
VALID_EXPECTED = VALID_ARGS
def test_init_typical_global(self):
for storage in ('static', 'extern', 'implicit'):
with self.subTest(storage):
static = Variable(
id=ID(
filename='x/y/z/spam.c',
funcname=None,
name='eggs',
),
storage=storage,
vartype='int',
)
self.assertEqual(static, (
('x/y/z/spam.c', None, 'eggs'),
storage,
'int',
))
def test_init_typical_local(self):
for storage in ('static', 'local'):
with self.subTest(storage):
static = Variable(
id=ID(
filename='x/y/z/spam.c',
funcname='func',
name='eggs',
),
storage=storage,
vartype='int',
)
self.assertEqual(static, (
('x/y/z/spam.c', 'func', 'eggs'),
storage,
'int',
))
def test_init_all_missing(self):
for value in ('', None):
with self.subTest(repr(value)):
static = Variable(
id=value,
storage=value,
vartype=value,
)
self.assertEqual(static, (
None,
None,
None,
))
def test_init_all_coerced(self):
id = ID('x/y/z/spam.c', 'func', 'spam')
tests = [
('str subclass',
dict(
id=(
PseudoStr('x/y/z/spam.c'),
PseudoStr('func'),
PseudoStr('spam'),
),
storage=PseudoStr('static'),
vartype=PseudoStr('int'),
),
(id,
'static',
'int',
)),
('non-str 1',
dict(
id=id,
storage=Object(),
vartype=Object(),
),
(id,
'<object>',
'<object>',
)),
('non-str 2',
dict(
id=id,
storage=StrProxy('static'),
vartype=StrProxy('variable'),
),
(id,
'static',
'variable',
)),
('non-str',
dict(
id=id,
storage=('a', 'b', 'c'),
vartype=('x', 'y', 'z'),
),
(id,
"('a', 'b', 'c')",
"('x', 'y', 'z')",
)),
]
for summary, kwargs, expected in tests:
with self.subTest(summary):
static = Variable(**kwargs)
for field in Variable._fields:
value = getattr(static, field)
if field == 'id':
self.assertIs(type(value), ID)
else:
self.assertIs(type(value), str)
self.assertEqual(tuple(static), expected)
def test_iterable(self):
static = Variable(**self.VALID_KWARGS)
id, storage, vartype = static
values = (id, storage, vartype)
for value, expected in zip(values, self.VALID_EXPECTED):
self.assertEqual(value, expected)
def test_fields(self):
static = Variable(('a', 'b', 'z'), 'x', 'y')
self.assertEqual(static.id, ('a', 'b', 'z'))
self.assertEqual(static.storage, 'x')
self.assertEqual(static.vartype, 'y')
def test___getattr__(self):
static = Variable(('a', 'b', 'z'), 'x', 'y')
self.assertEqual(static.filename, 'a')
self.assertEqual(static.funcname, 'b')
self.assertEqual(static.name, 'z')
def test_validate_typical(self):
validstorage = ('static', 'extern', 'implicit', 'local')
self.assertEqual(set(validstorage), set(Variable.STORAGE))
for storage in validstorage:
with self.subTest(storage):
static = Variable(
id=ID(
filename='x/y/z/spam.c',
funcname='func',
name='eggs',
),
storage=storage,
vartype='int',
)
static.validate() # This does not fail.
def test_validate_missing_field(self):
for field in Variable._fields:
with self.subTest(field):
static = Variable(**self.VALID_KWARGS)
static = static._replace(**{field: None})
with self.assertRaises(TypeError):
static.validate()
for field in ('storage', 'vartype'):
with self.subTest(field):
static = Variable(**self.VALID_KWARGS)
static = static._replace(**{field: UNKNOWN})
with self.assertRaises(TypeError):
static.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', ()), # Any non-empty str is okay.
('storage', ('external', 'global') + notnames),
('vartype', ()), # Any non-empty str is okay.
]
seen = set()
for field, invalid in tests:
for value in invalid:
seen.add(value)
with self.subTest(f'{field}={value!r}'):
static = Variable(**self.VALID_KWARGS)
static = static._replace(**{field: value})
with self.assertRaises(ValueError):
static.validate()
for field, invalid in tests:
if field == 'id':
continue
valid = seen - set(invalid)
for value in valid:
with self.subTest(f'{field}={value!r}'):
static = Variable(**self.VALID_KWARGS)
static = static._replace(**{field: value})
static.validate() # This does not fail.
|
