AaronFiore/electrum
1
0
Fork 0
Code Activity

Unit tests for Blockchain.verify_header.

Browse Source 
The function Blockchain.verify_header was previously not covered by tests
at all.  Even removing all the tests in it would still make the unit tests
pass.  This change adds tests for this important (!) function.
This commit is contained in:
Daniel Kraft
2019-07-28 13:20:42 +02:00
parent 84ca7ef306
commit 3f8661b069
1 changed files with 34 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
electrum/tests/test_blockchain.py
View File

@@ -339,3 +339,37 @@ class TestBlockchain(SequentialTestCase):
for b in (chain_u, chain_l, chain_z):
self.assertTrue(all([b.can_connect(b.read_header(i), False) for i in range(b.height())]))
class TestVerifyHeader(SequentialTestCase):
# Data for Bitcoin block header #100.
valid_header = "0100000095194b8567fe2e8bbda931afd01a7acd399b9325cb54683e64129bcd00000000660802c98f18fd34fd16d61c63cf447568370124ac5f3be626c2e1c3c9f0052d19a76949ffff001d33f3c25d"
target = Blockchain.bits_to_target(0x1d00ffff)
prev_hash = "00000000cd9b12643e6854cb25939b39cd7a1ad0af31a9bd8b2efe67854b1995"
def setUp(self):
super().setUp()
self.header = deserialize_header(bfh(self.valid_header), 100)
def test_valid_header(self):
Blockchain.verify_header(self.header, self.prev_hash, self.target)
def test_expected_hash_mismatch(self):
with self.assertRaises(Exception):
Blockchain.verify_header(self.header, self.prev_hash, self.target,
expected_header_hash="foo")
def test_prev_hash_mismatch(self):
with self.assertRaises(Exception):
Blockchain.verify_header(self.header, "foo", self.target)
def test_target_mismatch(self):
with self.assertRaises(Exception):
other_target = Blockchain.bits_to_target(0x1d00eeee)
Blockchain.verify_header(self.header, self.prev_hash, other_target)
def test_insufficient_pow(self):
with self.assertRaises(Exception):
self.header["nonce"] = 42
Blockchain.verify_header(self.header, self.prev_hash, self.target)