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22. Sui Testing: sui::test_scenario

Simulating multi-transaction scenarios in Move.

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`sui::test_scenario` simulates multi-user, multi-transaction interactions on-chain, advancing transaction contexts and claiming generated objects.

move
#[test]
fun test_flow() {
    let mut scenario = test_scenario::begin(@0xA);
    // User A action
    test_scenario::next_tx(&mut scenario, @0xB);
    // User B action
    test_scenario::end(scenario);
}

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Check your understanding

1. What module powers unit and integration testing in Sui Move?
sui::test_scenariosui::test_runnerstd::unit_testsui::mock
2. What must you call after each simulated transaction step in test_scenario?
test_scenario::next_tx(&mut scenario, next_sender)commit()flush()save()

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