tests: Add some basic tests for alot.db.utils.add_signature_header

These are pretty basic, but they do cover most of the conditions, even
if they rely heavily on mocking.

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/db/utils_test.py b/tests/db/utils_test.py
index d07dd56a..8e00b1c2 100644
--- a/tests/db/utils_test.py
+++ b/tests/db/utils_test.py
@@ -11,7 +11,10 @@ import os
 import os.path
 import unittest
 
+import mock
+
 from alot.db import utils
+from ..crypto_test import make_key
 
 
 class TestGetParams(unittest.TestCase):
@@ -321,3 +324,49 @@ class TestDecodeHeader(unittest.TestCase):
         expected = u'first\nsecond third fourth fifth'
         actual = utils.decode_header(text, normalize=True)
         self.assertEqual(actual, expected)
+
+
+class TestAddSignatureHeaders(unittest.TestCase):
+
+    class FakeMail(object):
+        def __init__(self):
+            self.headers = []
+
+        def add_header(self, header, value):
+            self.headers.append((header, value))
+
+    def test_length_0(self):
+        mail = self.FakeMail()
+        utils.add_signature_headers(mail, [], u'')
+        self.assertIn((utils.X_SIGNATURE_VALID_HEADER, u'False'), mail.headers)
+        self.assertIn(
+            (utils.X_SIGNATURE_MESSAGE_HEADER, u'Invalid: no signature found'),
+            mail.headers)
+
+    def test_valid(self):
+        mail = self.FakeMail()
+        key = make_key()
+
+        with mock.patch('alot.db.utils.crypto.get_key',
+                        mock.Mock(return_value=key)), \
+                mock.patch('alot.db.utils.crypto.check_uid_validity',
+                           mock.Mock(return_value=True)):
+            utils.add_signature_headers(mail, [mock.Mock(fpr=None)], u'')
+
+        self.assertIn((utils.X_SIGNATURE_VALID_HEADER, u'True'), mail.headers)
+        self.assertIn(
+            (utils.X_SIGNATURE_MESSAGE_HEADER, u'Valid: mocked'), mail.headers)
+
+    def test_untrusted(self):
+        mail = self.FakeMail()
+        key = make_key()
+
+        with mock.patch('alot.db.utils.crypto.get_key',
+                        mock.Mock(return_value=key)), \
+                mock.patch('alot.db.utils.crypto.check_uid_validity',
+                           mock.Mock(return_value=False)):
+            utils.add_signature_headers(mail, [mock.Mock(fpr=None)], u'')
+
+        self.assertIn((utils.X_SIGNATURE_VALID_HEADER, u'True'), mail.headers)
+        self.assertIn(
+            (utils.X_SIGNATURE_MESSAGE_HEADER, u'Untrusted: mocked'), mail.headers)