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Migrate unit/test_encryption_context.py from unittest to pytest #118

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Merged
merged 2 commits into from
Dec 17, 2018
Merged

Migrate unit/test_encryption_context.py from unittest to pytest #118

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05e12dd
Migrate unit/test_encryption_context.py from unittest to pytest
Dec 12, 2018
042a7e7
Removed unused import
Dec 17, 2018
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32 changes: 19 additions & 13 deletions test/unit/test_encryption_context.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,10 +11,7 @@
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
"""Unit test suite for aws_encryption_sdk.internal.formatting.encryption_context"""
import unittest

import pytest
import six

import aws_encryption_sdk.internal.defaults
import aws_encryption_sdk.internal.formatting.encryption_context
Expand All @@ -26,7 +23,7 @@
pytestmark = [pytest.mark.unit, pytest.mark.local]


class TestEncryptionContext(unittest.TestCase):
class TestEncryptionContext(object):
def test_assemble_content_aad(self):
"""Validate that the assemble_content_aad function
behaves as expected.
Expand All @@ -40,10 +37,11 @@ def test_assemble_content_aad(self):
assert test == VALUES["non_framed_aac"]

def test_assemble_content_aad_unknown_type(self):
with six.assertRaisesRegex(self, SerializationError, "Unknown aad_content_string"):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.assemble_content_aad(
message_id=VALUES["message_id"], aad_content_string=None, seq_num=1, length=VALUES["content_len"]
)
excinfo.match("Unknown aad_content_string")

def test_serialize_encryption_context_no_encryption_context(self):
"""Validate that the serialize_encryption_context
Expand All @@ -59,20 +57,22 @@ def test_serialize_encryption_context_too_many_elements(self):
with an encryption context with too many
elements.
"""
with six.assertRaisesRegex(self, SerializationError, "The encryption context contains too many elements."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.serialize_encryption_context(
VALUES["encryption_context_too_many_elements"]
)
excinfo.match("The encryption context contains too many elements.")

def test_serialize_encryption_context_too_large(self):
"""Validate that the serialize_encryption_context
function behaves as expected when presented
with an encryption context which is too large.
"""
with six.assertRaisesRegex(self, SerializationError, "The serialized context is too large"):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.serialize_encryption_context(
VALUES["encryption_context_too_large"]
)
excinfo.match("The serialized context is too large")

def test_serialize_encryption_context_unencodable(self):
"""Validate that the serialize_encryption_context
Expand All @@ -81,10 +81,11 @@ def test_serialize_encryption_context_unencodable(self):
unencodable elements.
"""
for encryption_context in [{"a": b"\xc4"}, {b"\xc4": "a"}, {b"\xc4": b"\xc4"}]:
with six.assertRaisesRegex(self, SerializationError, "Cannot encode dictionary key or value using *"):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.serialize_encryption_context(
encryption_context
)
excinfo.match("Cannot encode dictionary key or value using *")

def test_serialize_encryption_context_valid(self):
"""Validate that the serialize_encryption_context
Expand All @@ -100,8 +101,9 @@ def test_read_short_too_short(self):
"""Validate that the read_short function behaves
as expected when it encounters a struct error.
"""
with six.assertRaisesRegex(self, SerializationError, "Bad format of serialized context."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.read_short(b"d", 0)
excinfo.match("Bad format of serialized context.")

def test_read_short_valid(self):
"""Validate that the read_short function behaves
Expand All @@ -116,8 +118,9 @@ def test_read_string_encoding_error(self):
as expected when it encounters an encoding
error.
"""
with six.assertRaisesRegex(self, SerializationError, "Bad format of serialized context."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.read_string(b"\xc4", 0, 1)
excinfo.match("Bad format of serialized context.")

def test_read_string_valid(self):
"""Validate that the read_string function behaves
Expand All @@ -136,21 +139,23 @@ def test_deserialize_encryption_context_too_large(self):
data = ""
for i in range(aws_encryption_sdk.internal.defaults.MAX_BYTE_ARRAY_SIZE + 1):
data += str(i)
with six.assertRaisesRegex(self, SerializationError, "Serialized context is too long."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.deserialize_encryption_context(
serialized_encryption_context=data
)
excinfo.match("Serialized context is too long.")

def test_deserialize_encryption_context_duplicate_key(self):
"""Validate that the deserialize_encryption_context
function behaves as expected when it encounters
a serialized encryption context which contains
duplicate keys.
"""
with six.assertRaisesRegex(self, SerializationError, "Duplicate key in serialized context."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.deserialize_encryption_context(
serialized_encryption_context=VALUES["serialized_encryption_context_duplicate_key"]
)
excinfo.match("Duplicate key in serialized context.")

def test_deserialize_encryption_context_extra_data(self):
"""Validate that the deserialize_encryption_context
Expand All @@ -160,10 +165,11 @@ def test_deserialize_encryption_context_extra_data(self):
of pairs (formatting error).
"""
data = VALUES["serialized_encryption_context"] + b"jhofguijhsuskldfh"
with six.assertRaisesRegex(self, SerializationError, "Formatting error: Extra data in serialized context."):
with pytest.raises(SerializationError) as excinfo:
aws_encryption_sdk.internal.formatting.encryption_context.deserialize_encryption_context(
serialized_encryption_context=data
)
excinfo.match("Formatting error: Extra data in serialized context.")

def test_deserialize_encryption_context_valid(self):
"""Validate that the deserialize_encryption_context
Expand Down