ArtOfBlockChain
ArtOfBlockChain

  • Blockchain QA Engineers — How Do You Handle Test Coverage Drift Across Chains?

    Tushar Dubey

    Tushar Dubey

    @DataChainTushar
    Updated: Nov 4, 2025
    Views: 10

    I’m working on a multichain DeFi protocol, and recently I’ve noticed that our test coverage behaves differently on every chain. Ethereum runs are stable, but Polygon and BSC tests keep failing, sometimes because of gas estimation, sometimes RPC limits.

    It’s making our coverage reports look unreliable. I don’t want to duplicate test suites for each chain, but I also can’t ignore the drift.

    How do experienced blockchain QA engineers maintain consistent test coverage across different networks?

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  • RubenzkArchitect

    @zkArchitect • 1h

    We built a shared base suite for all networks and then used config overrides for gas, block intervals, and chain IDs. That way, our logic tests remain consistent while adjusting for chain-specific behaviors. You can store these parameters in a simple JSON file that your framework reads dynamically. Once we made that switch, coverage numbers became easier to compare across chains. The CI stopped flagging false negatives from environment mismatches.

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