From 14e3e1defa11baf73eca5e509a3b3f6f140a4f86 Mon Sep 17 00:00:00 2001 From: KOSASIH Date: Fri, 10 May 2024 21:00:23 +0700 Subject: [PATCH] Create test_blockchain.py --- blockchain/test/test_blockchain.py | 47 ++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 blockchain/test/test_blockchain.py diff --git a/blockchain/test/test_blockchain.py b/blockchain/test/test_blockchain.py new file mode 100644 index 000000000..bd7e51ad8 --- /dev/null +++ b/blockchain/test/test_blockchain.py @@ -0,0 +1,47 @@ +import unittest +from blockchain import Blockchain + +class TestBlockchain(unittest.TestCase): + def setUp(self): + self.blockchain = Blockchain() + + def test_create_genesis_block(self): + genesis_block = self.blockchain.create_genesis_block() + self.assertEqual(genesis_block.index, 0) + self.assertEqual(genesis_block.previous_hash, '0' * 64) + self.assertIsNotNone(genesis_block.timestamp) + self.assertEqual(genesis_block.data, 'Genesis Block') + self.assertEqual(genesis_block.hash, '0' * 64) + + def test_calculate_hash(self): + block = self.blockchain.create_genesis_block() + block.data = 'New Data' + block.hash = None + calculated_hash = self.blockchain.calculate_hash(block.index, block.previous_hash, block.timestamp, block.data) + self.assertEqual(calculated_hash, '0' * 64) + + def test_is_chain_valid(self): + self.assertTrue(self.blockchain.is_chain_valid(self.blockchain.chain)) + + invalid_chain = self.blockchain.chain[:-1] + invalid_chain.append(Block(len(invalid_chain), invalid_chain[-1].hash, int(time.time()), 'Invalid Data', None)) + self.assertFalse(self.blockchain.is_chain_valid(invalid_chain)) + + def test_add_block(self): + self.blockchain.add_block('Test Data') + self.assertEqual(len(self.blockchain.chain), 2) + self.assertEqual(self.blockchain.chain[-1].data, 'Test Data') + + def test_replace_chain(self): + self.blockchain.replace_chain(self.blockchain.chain[:-1]) + self.assertEqual(len(self.blockchain.chain), 1) + + invalid_chain = self.blockchain.chain[:-1] + invalid_chain.append(Block(len(invalid_chain), invalid_chain[-1].hash, int(time.time()), 'Invalid Data', None)) + self.blockchain.replace_chain(invalid_chain) + self.assertFalse(self.blockchain.is_chain_valid(self.blockchain.chain)) + + valid_chain = self.blockchain.chain[:-1] + valid_chain.append(Block(len(valid_chain), valid_chain[-1].hash, int(time.time()), 'Valid Data', None)) + self.blockchain.replace_chain(valid_chain) + self.assertTrue(self.blockchain.is_chain_valid(self.blockchain.chain))