def check_invalid_constraint(spec, constraint):
spec = Spec(spec)
constraint = Spec(constraint)
with pytest.raises(
(UnsatisfiableSpecError, UnconstrainableDependencySpecError)):
spec.constrain(constraint)
def check_constrain(expected, spec, constraint):
exp = Spec(expected)
spec = Spec(spec)
constraint = Spec(constraint)
spec.constrain(constraint)
assert exp == spec
def check_constrain_not_changed(spec, constraint):
spec = Spec(spec)
assert not spec.constrain(constraint)
def check_invalid_constraint(spec, constraint):
spec = Spec(spec)
constraint = Spec(constraint)
with pytest.raises(UnsatisfiableSpecError):
spec.constrain(constraint)
def test_unsatisfiable_multi_value_variant(self):
# Semantics for a multi-valued variant is different
# Depending on whether the spec is concrete or not
a = make_spec('multivalue-variant foo="bar"', concrete=True)
spec_str = 'multivalue-variant foo="bar,baz"'
b = Spec(spec_str)
assert not a.satisfies(b)
assert not a.satisfies(spec_str)
# A concrete spec cannot be constrained further
with pytest.raises(UnsatisfiableSpecError):
a.constrain(b)
a = Spec('multivalue-variant foo="bar"')
spec_str = 'multivalue-variant foo="bar,baz"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained
assert a.satisfies(b)
assert a.satisfies(spec_str)
# An abstract spec can instead be constrained
assert a.constrain(b)
a = make_spec('multivalue-variant foo="bar,baz"', concrete=True)
spec_str = 'multivalue-variant foo="bar,baz,quux"'
b = Spec(spec_str)
assert not a.satisfies(b)
assert not a.satisfies(spec_str)
# A concrete spec cannot be constrained further
with pytest.raises(UnsatisfiableSpecError):
a.constrain(b)
a = Spec('multivalue-variant foo="bar,baz"')
spec_str = 'multivalue-variant foo="bar,baz,quux"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained
assert a.satisfies(b)
assert a.satisfies(spec_str)
# An abstract spec can instead be constrained
assert a.constrain(b)
# ...but will fail during concretization if there are
# values in the variant that are not allowed
with pytest.raises(InvalidVariantValueError):
a.concretize()
# This time we'll try to set a single-valued variant
a = Spec('multivalue-variant fee="bar"')
spec_str = 'multivalue-variant fee="baz"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained,
# as before concretization I don't know which type of variant
# I have (if it is not a BV)
assert a.satisfies(b)
assert a.satisfies(spec_str)
# A variant cannot be parsed as single-valued until we try to
# concretize. This means that we can constrain the variant above
assert a.constrain(b)
# ...but will fail during concretization if there are
# multiple values set
with pytest.raises(MultipleValuesInExclusiveVariantError):
a.concretize()
def check_invalid_constraint(spec, constraint):
spec = Spec(spec)
constraint = Spec(constraint)
with pytest.raises(UnsatisfiableSpecError):
spec.constrain(constraint)
def check_constrain_not_changed(spec, constraint):
spec = Spec(spec)
assert not spec.constrain(constraint)
def check_constrain(expected, spec, constraint):
exp = Spec(expected)
spec = Spec(spec)
constraint = Spec(constraint)
spec.constrain(constraint)
assert exp == spec
def test_unsatisfiable_multi_value_variant(self):
# Semantics for a multi-valued variant is different
# Depending on whether the spec is concrete or not
a = target_factory(
'multivalue_variant foo="bar"', target_concrete=True
)
spec_str = 'multivalue_variant foo="bar,baz"'
b = Spec(spec_str)
assert not a.satisfies(b)
assert not a.satisfies(spec_str)
# A concrete spec cannot be constrained further
with pytest.raises(UnsatisfiableSpecError):
a.constrain(b)
a = Spec('multivalue_variant foo="bar"')
spec_str = 'multivalue_variant foo="bar,baz"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained
assert a.satisfies(b)
assert a.satisfies(spec_str)
# An abstract spec can instead be constrained
assert a.constrain(b)
a = target_factory(
'multivalue_variant foo="bar,baz"', target_concrete=True
)
spec_str = 'multivalue_variant foo="bar,baz,quux"'
b = Spec(spec_str)
assert not a.satisfies(b)
assert not a.satisfies(spec_str)
# A concrete spec cannot be constrained further
with pytest.raises(UnsatisfiableSpecError):
a.constrain(b)
a = Spec('multivalue_variant foo="bar,baz"')
spec_str = 'multivalue_variant foo="bar,baz,quux"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained
assert a.satisfies(b)
assert a.satisfies(spec_str)
# An abstract spec can instead be constrained
assert a.constrain(b)
# ...but will fail during concretization if there are
# values in the variant that are not allowed
with pytest.raises(InvalidVariantValueError):
a.concretize()
# This time we'll try to set a single-valued variant
a = Spec('multivalue_variant fee="bar"')
spec_str = 'multivalue_variant fee="baz"'
b = Spec(spec_str)
# The specs are abstract and they **could** be constrained,
# as before concretization I don't know which type of variant
# I have (if it is not a BV)
assert a.satisfies(b)
assert a.satisfies(spec_str)
# A variant cannot be parsed as single-valued until we try to
# concretize. This means that we can constrain the variant above
assert a.constrain(b)
# ...but will fail during concretization if there are
# multiple values set
with pytest.raises(MultipleValuesInExclusiveVariantError):
a.concretize()
def test_merge_anonymous_spec_with_named_spec(anonymous, named, expected):
s = Spec(anonymous)
changed = s.constrain(named)
assert changed
assert s == Spec(expected)