Adds unit-testing for delete comment signatures

lbry/tests/unit/comments/test_comment_signing.py

@@ -1,5 +1,5 @@
 from torba.testcase import AsyncioTestCase
-
+import hashlib
 from lbry.extras.daemon.comment_client import sign_comment
 from lbry.extras.daemon.comment_client import is_comment_signed_by_channel
 
@@ -14,7 +14,8 @@ class TestSigningComments(AsyncioTestCase):
             'claim_id': claim.claim_id,
             'channel_name': channel.claim_name,
             'channel_id': channel.claim_id,
-            'comment': comment
+            'comment': comment,
+            'comment_id': hashlib.sha256(comment.encode()).hexdigest()
         }
 
     def test01_successful_create_sign_and_validate_comment(self):
@@ -31,3 +32,28 @@ class TestSigningComments(AsyncioTestCase):
         comment = self.create_claim_comment_body('Woahh This is Sick!! Shout out 2 my boy Tommy H', stream, pdiddy)
         sign_comment(comment, channel2)
         self.assertFalse(is_comment_signed_by_channel(comment, pdiddy))
+
+    def test03_successful_sign_abandon_comment(self):
+        rswanson = get_channel('@RonSwanson')
+        dsilver = get_stream('Welcome to the Pawnee, and give a big round for Ron Swanson, AKA Duke Silver')
+        comment_body = self.create_claim_comment_body('COMPUTER, DELETE ALL VIDEOS OF RON.', dsilver, rswanson)
+        sign_comment(comment_body, rswanson, abandon=True)
+        self.assertTrue(is_comment_signed_by_channel(comment_body, rswanson, abandon=True))
+
+    def test04_invalid_signature(self):
+        rswanson = get_channel('@RonSwanson')
+        jeanralphio = get_channel('@JeanRalphio')
+        chair = get_stream('This is a nice chair. I made it with Mahogany wood and this electric saw')
+        chair_comment = self.create_claim_comment_body(
+            'Hah. You use an electric saw? Us swansons have been making chairs with handsaws just three after birth.',
+            chair,
+            rswanson
+        )
+        sign_comment(chair_comment, rswanson)
+        self.assertTrue(is_comment_signed_by_channel(chair_comment, rswanson))
+        self.assertFalse(is_comment_signed_by_channel(chair_comment, jeanralphio))
+        fake_abandon_signal = chair_comment.copy()
+        sign_comment(fake_abandon_signal, jeanralphio, abandon=True)
+        self.assertFalse(is_comment_signed_by_channel(fake_abandon_signal, rswanson, abandon=True))
+        self.assertFalse(is_comment_signed_by_channel(fake_abandon_signal, jeanralphio, abandon=True))
+