Merge pull request #2774 from reaperhulk/improve-unknown-error

improve the messages from openssl InternalError

1 files changed, 27 insertions, 1 deletions

diff --git a/tests/hazmat/bindings/test_openssl.py b/tests/hazmat/bindings/test_openssl.py
index 76a9218b..457799d3 100644
--- a/tests/hazmat/bindings/test_openssl.py
+++ b/tests/hazmat/bindings/test_openssl.py
@@ -6,7 +6,10 @@ from __future__ import absolute_import, division, print_function
 
 import pytest
 
-from cryptography.hazmat.bindings.openssl.binding import Binding
+from cryptography.exceptions import InternalError
+from cryptography.hazmat.bindings.openssl.binding import (
+    Binding, _OpenSSLErrorWithText, _openssl_assert
+)
 
 
 class TestOpenSSL(object):
@@ -149,3 +152,26 @@ class TestOpenSSL(object):
         else:
             with pytest.raises(AttributeError):
                 b.lib.CMAC_Init
+
+    def test_openssl_assert_error_on_stack(self):
+        b = Binding()
+        b.lib.ERR_put_error(
+            b.lib.ERR_LIB_EVP,
+            b.lib.EVP_F_EVP_ENCRYPTFINAL_EX,
+            b.lib.EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH,
+            b"",
+            -1
+        )
+        with pytest.raises(InternalError) as exc_info:
+            _openssl_assert(b.lib, False)
+
+        assert exc_info.value.err_code == [_OpenSSLErrorWithText(
+            code=101183626,
+            lib=b.lib.ERR_LIB_EVP,
+            func=b.lib.EVP_F_EVP_ENCRYPTFINAL_EX,
+            reason=b.lib.EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH,
+            reason_text=(
+                b'error:0607F08A:digital envelope routines:EVP_EncryptFinal_'
+                b'ex:data not multiple of block length'
+            )
+        )]