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Convert iterators to lists to remove late binding

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Remove late binding of iterators to enable the creation of an object
with an actual state of a variable.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
This commit is contained in:
gabor-mezei-arm 2021-06-23 17:33:30 +02:00
parent 0bdb84e861
commit 9774dcf592
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GPG key ID: 106F5A41ECC305BD
1 changed files with 45 additions and 42 deletions
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61
tests/scripts/generate_psa_tests.py
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@ -307,10 +307,11 @@ class StorageFormat:
description=description)
return key
def all_keys_for_lifetimes(self) -> Iterator[StorageKey]:
def all_keys_for_lifetimes(self) -> List[StorageKey]:
"""Generate test keys covering lifetimes."""
lifetimes = sorted(self.constructors.lifetimes)
expressions = self.constructors.generate_expressions(lifetimes)
keys = [] #type List[StorageKey]
for lifetime in expressions:
# Don't attempt to create or load a volatile key in storage
if 'VOLATILE' in lifetime:
@ -319,7 +320,8 @@ class StorageFormat:
# but do attempt to load one.
if 'READ_ONLY' in lifetime and self.forward:
continue
yield self.key_for_lifetime(lifetime)
keys.append(self.key_for_lifetime(lifetime))
return keys
def key_for_usage_flags(
self,
@ -331,36 +333,38 @@ class StorageFormat:
if short is None:
short = re.sub(r'\bPSA_KEY_USAGE_', r'', usage)
description = 'usage: ' + short
key = StorageKey(version=self.version,
return StorageKey(version=self.version,
id=1, lifetime=0x00000001,
type='PSA_KEY_TYPE_RAW_DATA', bits=8,
usage=usage, alg=0, alg2=0,
material=b'K',
description=description)
return key
def all_keys_for_usage_flags(self) -> Iterator[StorageKey]:
def all_keys_for_usage_flags(self) -> List[StorageKey]:
"""Generate test keys covering usage flags."""
known_flags = sorted(self.constructors.key_usage_flags)
yield self.key_for_usage_flags(['0'])
for usage_flag in known_flags:
yield self.key_for_usage_flags([usage_flag])
keys = [] #type List[StorageKey]
keys.append(self.key_for_usage_flags(['0']))
keys += [self.key_for_usage_flags([usage_flag])
for usage_flag in known_flags]
keys += [self.key_for_usage_flags([flag1, flag2])
for flag1, flag2 in zip(known_flags,
known_flags[1:] + [known_flags[0]]):
yield self.key_for_usage_flags([flag1, flag2])
yield self.key_for_usage_flags(known_flags, short='all known')
known_flags[1:] + [known_flags[0]])]
keys.append(self.key_for_usage_flags(known_flags, short='all known'))
return keys
def keys_for_type(
self,
key_type: str,
params: Optional[Iterable[str]] = None
) -> Iterator[StorageKey]:
) -> List[StorageKey]:
"""Generate test keys for the given key type.
For key types that depend on a parameter (e.g. elliptic curve family),
`param` is the parameter to pass to the constructor. Only a single
parameter is supported.
"""
keys = [] #type: List[StorageKey]
kt = crypto_knowledge.KeyType(key_type, params)
for bits in kt.sizes_to_test():
usage_flags = 'PSA_KEY_USAGE_EXPORT'
@ -371,21 +375,21 @@ class StorageFormat:
r'',
kt.expression)
description = 'type: {} {}-bit'.format(short_expression, bits)
key = StorageKey(version=self.version,
keys.append(StorageKey(version=self.version,
id=1, lifetime=0x00000001,
type=kt.expression, bits=bits,
usage=usage_flags, alg=alg, alg2=alg2,
material=key_material,
description=description)
yield key
description=description))
return keys
def all_keys_for_types(self) -> Iterator[StorageKey]:
def all_keys_for_types(self) -> List[StorageKey]:
"""Generate test keys covering key types and their representations."""
key_types = sorted(self.constructors.key_types)
for key_type in self.constructors.generate_expressions(key_types):
yield from self.keys_for_type(key_type)
return [key for key_type in self.constructors.generate_expressions(key_types)
for key in self.keys_for_type(key_type)]
def keys_for_algorithm(self, alg: str) -> Iterator[StorageKey]:
def keys_for_algorithm(self, alg: str) -> List[StorageKey]:
"""Generate test keys for the specified algorithm."""
# For now, we don't have information on the compatibility of key
# types and algorithms. So we just test the encoding of algorithms,
@ -399,22 +403,21 @@ class StorageFormat:
usage=usage, alg=alg, alg2=0,
material=b'K',
description='alg: ' + descr)
yield key1
key2 = StorageKey(version=self.version,
id=1, lifetime=0x00000001,
type='PSA_KEY_TYPE_RAW_DATA', bits=8,
usage=usage, alg=0, alg2=alg,
material=b'L',
description='alg2: ' + descr)
yield key2
return [key1, key2]
def all_keys_for_algorithms(self) -> Iterator[StorageKey]:
def all_keys_for_algorithms(self) -> List[StorageKey]:
"""Generate test keys covering algorithm encodings."""
algorithms = sorted(self.constructors.algorithms)
for alg in self.constructors.generate_expressions(algorithms):
yield from self.keys_for_algorithm(alg)
return [key for alg in self.constructors.generate_expressions(algorithms)
for key in self.keys_for_algorithm(alg)]
def all_test_cases(self) -> Iterator[test_case.TestCase]:
def all_test_cases(self) -> List[test_case.TestCase]:
"""Generate all storage format test cases."""
# First build a list of all keys, then construct all the corresponding
# test cases. This allows all required information to be obtained in
@ -425,13 +428,13 @@ class StorageFormat:
keys += self.all_keys_for_usage_flags()
keys += self.all_keys_for_types()
keys += self.all_keys_for_algorithms()
for key in keys:
if key.location_value() != 0:
# Skip keys with a non-default location, because they
# require a driver and we currently have no mechanism to
# determine whether a driver is available.
continue
yield self.make_test_case(key)
keys = filter(lambda key: key.location_value() == 0, keys)
return [self.make_test_case(key) for key in keys]
class TestGenerator: