Refactors tests folder to separate different modules

Each module has a different folder and they do not share methods now. At some point they should be split in different repos

test/common/unit/test_cryptographer.py

@@ -0,0 +1,146 @@
+import binascii
+
+from apps.cli.blob import Blob
+from common.cryptographer import Cryptographer
+from pisa.encrypted_blob import EncryptedBlob
+from test.common.unit.conftest import get_random_value_hex
+
+data = "6097cdf52309b1b2124efeed36bd34f46dc1c25ad23ac86f28380f746254f777"
+key = "b2e984a570f6f49bc38ace178e09147b0aa296cbb7c92eb01412f7e2d07b5659"
+encrypted_data = "8f31028097a8bf12a92e088caab5cf3fcddf0d35ed2b72c24b12269373efcdea04f9d2a820adafe830c20ff132d89810"
+
+
+def test_check_data_key_format_wrong_data():
+    data = get_random_value_hex(64)[:-1]
+    key = get_random_value_hex(32)
+
+    try:
+        Cryptographer.check_data_key_format(data, key)
+        assert False
+
+    except ValueError as e:
+        assert "Odd-length" in str(e)
+
+
+def test_check_data_key_format_wrong_key():
+    data = get_random_value_hex(64)
+    key = get_random_value_hex(33)
+
+    try:
+        Cryptographer.check_data_key_format(data, key)
+        assert False
+
+    except ValueError as e:
+        assert "32-byte hex" in str(e)
+
+
+def test_check_data_key_format():
+    data = get_random_value_hex(64)
+    key = get_random_value_hex(32)
+
+    assert Cryptographer.check_data_key_format(data, key) is True
+
+
+def test_encrypt_odd_length_data():
+    blob = Blob(get_random_value_hex(64)[-1])
+    key = get_random_value_hex(32)
+
+    try:
+        Cryptographer.encrypt(blob, key)
+        assert False
+
+    except ValueError:
+        assert True
+
+
+def test_encrypt_wrong_key_size():
+    blob = Blob(get_random_value_hex(64))
+    key = get_random_value_hex(31)
+
+    try:
+        Cryptographer.encrypt(blob, key)
+        assert False
+
+    except ValueError:
+        assert True
+
+
+def test_encrypt_hex():
+    blob = Blob(data)
+
+    assert Cryptographer.encrypt(blob, key) == encrypted_data
+
+
+def test_encrypt_bytes():
+    blob = Blob(data)
+
+    byte_blob = Cryptographer.encrypt(blob, key, rtype="bytes")
+    assert isinstance(byte_blob, bytes) and byte_blob == binascii.unhexlify(encrypted_data)
+
+
+def test_encrypt_wrong_return():
+    # Any other type but "hex" (default) or "bytes" should fail
+    try:
+        Cryptographer.encrypt(Blob(data), key, rtype="random_value")
+        assert False
+
+    except ValueError:
+        assert True
+
+
+def test_decrypt_invalid_tag():
+    random_key = get_random_value_hex(32)
+    random_encrypted_data = get_random_value_hex(64)
+    random_encrypted_blob = EncryptedBlob(random_encrypted_data)
+
+    # Trying to decrypt random data should result in an InvalidTag exception. Our decrypt function
+    # returns None
+    hex_tx = Cryptographer.decrypt(random_encrypted_blob, random_key)
+    assert hex_tx is None
+
+
+def test_decrypt_odd_length_data():
+    random_key = get_random_value_hex(32)
+    random_encrypted_data_odd = get_random_value_hex(64)[:-1]
+    random_encrypted_blob_odd = EncryptedBlob(random_encrypted_data_odd)
+
+    try:
+        Cryptographer.decrypt(random_encrypted_blob_odd, random_key)
+        assert False
+
+    except ValueError:
+        assert True
+
+
+def test_decrypt_wrong_key_size():
+    random_key = get_random_value_hex(31)
+    random_encrypted_data_odd = get_random_value_hex(64)
+    random_encrypted_blob_odd = EncryptedBlob(random_encrypted_data_odd)
+
+    try:
+        Cryptographer.decrypt(random_encrypted_blob_odd, random_key)
+        assert False
+
+    except ValueError:
+        assert True
+
+
+def test_decrypt_hex():
+    # Valid data should run with no InvalidTag and verify
+    assert Cryptographer.decrypt(EncryptedBlob(encrypted_data), key) == data
+
+
+def test_decrypt_bytes():
+    # We can also get the decryption in bytes
+    byte_blob = Cryptographer.decrypt(EncryptedBlob(encrypted_data), key, rtype="bytes")
+    assert isinstance(byte_blob, bytes) and byte_blob == binascii.unhexlify(data)
+
+
+def test_decrypt_wrong_return():
+    # Any other type but "hex" (default) or "bytes" should fail
+    try:
+        Cryptographer.decrypt(EncryptedBlob(encrypted_data), key, rtype="random_value")
+        assert False
+
+    except ValueError:
+        assert True