elements: Search for the correct address and invoice prefixes

Signed-off-by: Christian Decker <decker.christian@gmail.com>

tests/test_invoices.py

@@ -42,7 +42,7 @@ def test_invoice(node_factory, chainparams):
     b11 = inv['bolt11']
     # Amount usually comes after currency (bcrt in our case),
     # but an any-amount invoices will have no amount
-    assert b11.startswith("lnbcrt1")
+    assert b11.startswith("ln" + chainparams['bip173_prefix'])
     # By bech32 rules, the last '1' digit is the separator
     # between the human-readable and data parts. We want
     # to match the "lnbcrt1" above with the '1' digit as the

tests/test_misc.py

@@ -438,7 +438,7 @@ def test_bech32_funding(node_factory, chainparams):
     # fund a bech32 address and then open a channel with it
     res = l1.openchannel(l2, 20000, 'bech32')
     address = res['address']
-    assert address[0:4] == chainparams['bip173_prefix']
+    assert address.startswith(chainparams['bip173_prefix'])
 
     # probably overly paranoid checking
     wallettxid = res['wallettxid']