raise ValueErrors when supplying/not supplying tags for GCM

1 files changed, 13 insertions, 2 deletions

diff --git a/tests/hazmat/primitives/test_utils.py b/tests/hazmat/primitives/test_utils.py
index ebb8b5c4..c39364c7 100644
--- a/tests/hazmat/primitives/test_utils.py
+++ b/tests/hazmat/primitives/test_utils.py
@@ -3,7 +3,7 @@ import pytest
 from .utils import (
     base_hash_test, encrypt_test, hash_test, long_string_hash_test,
     base_hmac_test, hmac_test, stream_encryption_test, aead_test,
-    aead_exception_test,
+    aead_exception_test, aead_tag_exception_test,
 )
 
 
@@ -29,7 +29,7 @@ class TestAEADTest(object):
         assert exc_info.value.args[0] == "message!"
 
 
-class TestAEADFinalizeTest(object):
+class TestAEADExceptionTest(object):
     def test_skips_if_only_if_returns_false(self):
         with pytest.raises(pytest.skip.Exception) as exc_info:
             aead_exception_test(
@@ -40,6 +40,17 @@ class TestAEADFinalizeTest(object):
         assert exc_info.value.args[0] == "message!"
 
 
+class TestAEADTagExceptionTest(object):
+    def test_skips_if_only_if_returns_false(self):
+        with pytest.raises(pytest.skip.Exception) as exc_info:
+            aead_tag_exception_test(
+                None, None, None,
+                only_if=lambda backend: False,
+                skip_message="message!"
+            )
+        assert exc_info.value.args[0] == "message!"
+
+
 class TestHashTest(object):
     def test_skips_if_only_if_returns_false(self):
         with pytest.raises(pytest.skip.Exception) as exc_info: