33 lines
1.2 KiB
Python
33 lines
1.2 KiB
Python
 
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import pytest
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from app.rounds.draw import draw_winner, header_hex_to_block_hash
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def test_header_hex_to_block_hash_matches_known_mainnet_block():
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# Real PLM mainnet block 477486: header from blockchain.block.header, hash
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# cross-checked against the blockhash reported by blockchain.transaction.get
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# for a tx confirmed in that block.
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header_hex = (
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"0020ed30fbc39ee45200d10214f5107c5f36e7bf753032fd1d3279810c170000000000"
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"009a4ea723f732be4c538f3a2490837dd6560103d73ece606aa7d578a66700447b28875"
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"e6a47a61b1ad8012582"
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)
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known_block_hash = "00000000000008788b55ade13b74d54ceffda9e54315b802411be1ca65064e86"
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assert header_hex_to_block_hash(header_hex) == known_block_hash
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def test_draw_winner_is_deterministic_and_within_range():
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participants = ["addrA", "addrB", "addrC"]
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block_hash = "00" * 31 + "05" # seed = 5, index = 5 % 3 = 2
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assert draw_winner(participants, block_hash) == "addrC"
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def test_draw_winner_single_participant_always_wins():
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block_hash = "ff" * 32
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assert draw_winner(["only"], block_hash) == "only"
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def test_draw_winner_raises_on_empty_participants():
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with pytest.raises(ValueError):
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draw_winner([], "00" * 32)
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