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Overview

Overview​

Testing Qubic smart contracts is a critical step in ensuring their security, correctness, and efficiency before deployment. Due to Qubic's deterministic execution model and unique architecture, contract testing requires specialized approaches to verify:

1. State Integrity – Contracts must maintain consistent state across all nodes

2. Deterministic Behavior – Identical inputs must produce identical results

3. Contract Efficiency – Optimize computation to minimize QU consumption from the contract's balance

4. Security Checks – Prevent vulnerabilities like reentrancy or invalid state transitions

Qubic Testing Framework​

The Qubic Google Test (QGTest) framework is a specialized adaptation of Google Test (GTest) designed for testing Qubic smart contracts. Designed to simulate contract execution, validate logic, and ensure deterministic behavior without needing to run a full node or engage in live consensus.

1. Isolated Testing​

// Example unit test for a transfer function
TEST(Contract, TransferFailsWhenUnderfunded)
{
    // code
}

2. Testnet Deployment​

  • Use Qubic’s testnet mode to verify real-world behavior
  • Monitor contract execution across multiple ticks