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Testing · hard

96. Testing with Bankrun & LiteSVM

High-speed clock warping and state injection.

1 min read2 questionsup to 50 XPtopic 96/100

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Bankrun and LiteSVM allow developers to manipulate sysvars, advance slots, warp timestamps, and inject arbitrary account data in-memory without network delays.

rust
// LiteSVM test setup
let mut svm = LiteSVM::new();
svm.add_program(program_id, &program_bytes);
let clock: Clock = svm.get_sysvar();

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Check your understanding

1. What capability does Bankrun / LiteSVM provide for time-locked smart contracts?
Instant programmatic warping of the Clock sysvar timestamp and slotMining real BitcoinBypassing cryptographyDeploying to mainnet
2. Why are in-process SVM test runners preferred in CI/CD pipelines?
They run hundreds of full integration tests in seconds without running validator processesThey are cheaperThey require no Rust codeThey run on Android

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