lightserver testing: now only 11 blocks of testnet

Author: carver

tests/p2p/test_lightchain_integration.py

@@ -29,6 +29,14 @@ async def test_lightchain_integration(request, event_loop):
     In order to run this you need to pass the following to pytest:
 
         pytest --integration --enode=...
+
+    If you don't have any geth testnet data ready, it is very quick to generate some with:
+
+        geth --testnet --syncmode full
+
+    You only need the first 11 blocks for this test to succeed. Then you can restart geth with:
+
+        geth --testnet --lightserv 90 --nodiscover
     """
     # TODO: Implement a pytest fixture that runs geth as above, so that we don't need to run it
     # manually.
@@ -88,10 +96,9 @@ async def wait_for_header_sync(block_number):
     # we specify in the query, but because of fast sync we can only assume it has that for recent
     # blocks, so we use the current head to lookup the code for the contract below.
     # https://ropsten.etherscan.io/address/0x95a48dca999c89e4e284930d9b9af973a7481287
-    contract_addr = decode_hex('95a48dca999c89e4e284930d9b9af973a7481287')
+    contract_addr = decode_hex('0x8B09D9ac6A4F7778fCb22852e879C7F3B2bEeF81')
     contract_code = await peer_chain.get_contract_code(head.hash, contract_addr)
-    assert encode_hex(keccak(contract_code)) == (
-        '0x1e0b2ad970b365a217c40bcf3582cbb4fcc1642d7a5dd7a82ae1e278e010123e')
+    assert encode_hex(contract_code) == '0x600060006000600060006000356000f1'
 
     account = await peer_chain.get_account(head.hash, contract_addr)
     assert account.code_hash == keccak(contract_code)