Add Trezor compatibility test and group reqs to cover; v14.0.0

Author: pjkundert

slip39/api_test.py

@@ -237,6 +237,15 @@ def test_slip39_extendable_trezor_compatibility():
     account.from_mnemonic( "\n".join(mnemonics), slip39_passphrase='TREZOR', path="m/" )
     assert account.xprvkey == "xprv9s21ZrQH143K4FS1qQdXYAFVAHiSAnjj21YAKGh2CqUPJ2yQhMmYGT4e5a2tyGLiVsRgTEvajXkxhg92zJ8zmWZas9LguQWz7WZShfJg6RS"
 
+def test_slip39_compatibility():
+    """Test that SLIP-39 backup of a wallet generated by Trezor can be recevered"""
+    # The 1th vector from https://github.com/trezor/python-shamir-mnemonic/blob/master/vectors.json
+    mnemonics = [
+        "duckling enlarge academic academic agency result length solution fridge kidney coal piece deal husband erode duke ajar critical decision keyboard"
+    ]
+    account = Account( crypto="Bitcoin", format="legacy" )
+    account.from_mnemonic( "\n".join(mnemonics), slip39_passphrase='TREZOR', path="m/" )
+    assert account.xprvkey == "xprv9s21ZrQH143K4QViKpwKCpS2zVbz8GrZgpEchMDg6KME9HZtjfL7iThE9w5muQA4YPHKN1u5VM1w8D4pvnjxa2BmpGMfXr7hnRrRHZ93awZ"
 
 def test_account_from_mnemonic():
     """Test all the ways the entropy 0xffff...ffff can be encoded and HD Wallets derived."""

slip39/layout/pdf.py

@@ -326,7 +326,7 @@ def produce_pdf(
             cover_text	       += "\n"
 
         tpl_cover['cover-text']	= cover_text
-        cover_sent		= "SLIP-39 Mnemonic Card Recipients:\n\n"
+        cover_sent		= f"SLIP-39 Group Recipients ({group_threshold} of {len(group_reqs)}):\n\n"
         cover_sent	       += "\n".join( slip39_group )
         tpl_cover['cover-sent']	= cover_sent