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#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
import sys
try:
import unittest2 as unittest
except ImportError:
import unittest
from tests.base import BaseTestCase
from pyasn1.type import constraint
from pyasn1.type import error
class SingleValueConstraintTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.v1 = 1, 2
self.v2 = 3, 4
self.c1 = constraint.SingleValueConstraint(*self.v1)
self.c2 = constraint.SingleValueConstraint(*self.v2)
def testCmp(self):
assert self.c1 == self.c1, "comparison fails"
def testHash(self):
assert hash(self.c1) != hash(self.c2), "hash() fails"
def testGoodVal(self):
try:
self.c1(1)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(4)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
def testContains(self):
for v in self.v1:
assert v in self.c1
assert v not in self.c2
for v in self.v2:
assert v in self.c2
assert v not in self.c1
def testIter(self):
assert set(self.v1) == set(self.c1)
assert set(self.v2) == set(self.c2)
def testSub(self):
subconst = self.c1 - constraint.SingleValueConstraint(self.v1[0])
assert list(subconst) == [self.v1[1]]
def testAdd(self):
superconst = self.c1 + self.c2
assert set(superconst) == set(self.v1 + self.v2)
class ContainedSubtypeConstraintTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ContainedSubtypeConstraint(
constraint.SingleValueConstraint(12)
)
def testGoodVal(self):
try:
self.c1(12)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(4)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class ValueRangeConstraintTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ValueRangeConstraint(1, 4)
def testGoodVal(self):
try:
self.c1(1)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(-5)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class ValueSizeConstraintTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ValueSizeConstraint(1, 2)
def testGoodVal(self):
try:
self.c1("a")
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1("abc")
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class PermittedAlphabetConstraintTestCase(SingleValueConstraintTestCase):
def setUp(self):
self.v1 = "A", "B"
self.v2 = "C", "D"
self.c1 = constraint.PermittedAlphabetConstraint(*self.v1)
self.c2 = constraint.PermittedAlphabetConstraint(*self.v2)
def testGoodVal(self):
try:
self.c1("A")
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1("E")
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class WithComponentsConstraintTestCase(BaseTestCase):
def testGoodVal(self):
c = constraint.WithComponentsConstraint(
("A", constraint.ComponentPresentConstraint()),
("B", constraint.ComponentAbsentConstraint()),
)
try:
c({"A": 1})
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testGoodValWithExtraFields(self):
c = constraint.WithComponentsConstraint(
("A", constraint.ComponentPresentConstraint()),
("B", constraint.ComponentAbsentConstraint()),
)
try:
c({"A": 1, "C": 2})
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testEmptyConstraint(self):
c = constraint.WithComponentsConstraint()
try:
c({"A": 1})
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
c = constraint.WithComponentsConstraint(
("A", constraint.ComponentPresentConstraint())
)
try:
c({"B": 2})
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
def testBadValExtraFields(self):
c = constraint.WithComponentsConstraint(
("A", constraint.ComponentPresentConstraint())
)
try:
c({"B": 2, "C": 3})
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class ConstraintsIntersectionTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ConstraintsIntersection(
constraint.SingleValueConstraint(4), constraint.ValueRangeConstraint(2, 4)
)
def testCmp1(self):
assert constraint.SingleValueConstraint(4) in self.c1, "__cmp__() fails"
def testCmp2(self):
assert constraint.SingleValueConstraint(5) not in self.c1, "__cmp__() fails"
def testCmp3(self):
c = constraint.ConstraintsUnion(
constraint.ConstraintsIntersection(
constraint.SingleValueConstraint(4),
constraint.ValueRangeConstraint(2, 4),
)
)
assert self.c1 in c, "__cmp__() fails"
def testCmp4(self):
c = constraint.ConstraintsUnion(
constraint.ConstraintsIntersection(constraint.SingleValueConstraint(5))
)
assert self.c1 not in c, "__cmp__() fails"
def testGoodVal(self):
try:
self.c1(4)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(-5)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class InnerTypeConstraintTestCase(BaseTestCase):
def testConst1(self):
c = constraint.InnerTypeConstraint(constraint.SingleValueConstraint(4))
try:
c(4, 32)
except error.ValueConstraintError:
assert 0, "constraint check fails"
try:
c(5, 32)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
def testConst2(self):
c = constraint.InnerTypeConstraint(
(0, constraint.SingleValueConstraint(4), "PRESENT"),
(1, constraint.SingleValueConstraint(4), "ABSENT"),
)
try:
c(4, 0)
except error.ValueConstraintError:
assert 0, "constraint check fails"
try:
c(4, 1)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
try:
c(3, 0)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
# Constraints compositions
class ConstraintsIntersectionRangeTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ConstraintsIntersection(
constraint.ValueRangeConstraint(1, 9), constraint.ValueRangeConstraint(2, 5)
)
def testGoodVal(self):
try:
self.c1(3)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(0)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class ConstraintsUnionTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ConstraintsUnion(
constraint.SingleValueConstraint(5), constraint.ValueRangeConstraint(1, 3)
)
def testGoodVal(self):
try:
self.c1(2)
self.c1(5)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(-5)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
class ConstraintsExclusionTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ConstraintsExclusion(constraint.ValueRangeConstraint(2, 4))
def testGoodVal(self):
try:
self.c1(6)
except error.ValueConstraintError:
assert 0, "constraint check fails"
def testBadVal(self):
try:
self.c1(2)
except error.ValueConstraintError:
pass
else:
assert 0, "constraint check fails"
# Constraints derivations
class DirectDerivationTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.SingleValueConstraint(5)
self.c2 = constraint.ConstraintsUnion(
self.c1, constraint.ValueRangeConstraint(1, 3)
)
def testGoodVal(self):
assert self.c1.isSuperTypeOf(self.c2), "isSuperTypeOf failed"
assert not self.c1.isSubTypeOf(self.c2), "isSubTypeOf failed"
def testBadVal(self):
assert not self.c2.isSuperTypeOf(self.c1), "isSuperTypeOf failed"
assert self.c2.isSubTypeOf(self.c1), "isSubTypeOf failed"
class IndirectDerivationTestCase(BaseTestCase):
def setUp(self):
BaseTestCase.setUp(self)
self.c1 = constraint.ConstraintsIntersection(
constraint.ValueRangeConstraint(1, 30)
)
self.c2 = constraint.ConstraintsIntersection(
self.c1, constraint.ValueRangeConstraint(1, 20)
)
self.c2 = constraint.ConstraintsIntersection(
self.c2, constraint.ValueRangeConstraint(1, 10)
)
def testGoodVal(self):
assert self.c1.isSuperTypeOf(self.c2), "isSuperTypeOf failed"
assert not self.c1.isSubTypeOf(self.c2), "isSubTypeOf failed"
def testBadVal(self):
assert not self.c2.isSuperTypeOf(self.c1), "isSuperTypeOf failed"
assert self.c2.isSubTypeOf(self.c1), "isSubTypeOf failed"
# TODO: how to apply size constraints to constructed types?
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == "__main__":
unittest.TextTestRunner(verbosity=2).run(suite)
|
