Long Start - Complete Tutorial
This section provides a comprehensive, step-by-step tutorial for developing, verifying, and deploying a complete Ursus smart contract. Unlike the Quick Start, which covers basics, this tutorial walks through the entire development lifecycle of a real-world contract.
What You'll Learn
By the end of this tutorial, you will:
- ✅ Design a complex smart contract from requirements
- ✅ Implement the contract in Ursus with proper structure
- ✅ Write formal specifications for contract behavior
- ✅ Create comprehensive test scenarios
- ✅ Use QuickChick for property-based testing
- ✅ Write and verify correctness proofs
- ✅ Understand execution semantics
- ✅ Deploy and interact with the contract
Tutorial Structure
1. Designing the Contract
- Requirements analysis
- Architecture design
- State modeling
- Interface design
2. Implementation
- Step-by-step contract implementation
- Best practices and patterns
- Error handling
- Gas optimization
3. Formal Specifications
- Writing contract specifications
- Invariants and properties
- Pre/post-conditions
- State transitions
4. Test Scenarios
- Unit test design
- Integration tests
- Edge cases
- Test coverage
5. QuickChick Testing
- Property-based testing
- Generators and arbitraries
- Shrinking strategies
- Test execution
6. Direct Proofs
- Correctness proofs
- Proof tactics
- Lemmas and theorems
- Proof automation
7. Execution Semantics
- Understanding execution model
- State transitions
- Gas consumption
- Error handling
8. Multi-Contract Systems
- Inter-contract communication
- Message passing
- Contract composition
- System-level properties
9. TON Solidity Testing
- Using TON Solidity test framework
- Integration with TS4
- Testing on local blockchain
- Debugging techniques
10. Deployment
- Compilation to Solidity
- Deployment to testnet
- Contract verification
- Interaction and monitoring
Prerequisites
Before starting this tutorial, you should:
- ✅ Complete the Quick Start
- ✅ Understand Ursus Language basics
- ✅ Be familiar with Programming Style
- ✅ Have Ursus environment installed (Installation)
Example Contract
This tutorial uses a Token Contract as the running example. The contract implements:
- Token minting and burning
- Transfer functionality
- Allowance mechanism
- Access control
- Event emission
The complete source code is available in the ursus-patterns repository.
Time Estimate
- Quick path (implementation only): 2-3 hours
- Standard path (with testing): 4-6 hours
- Complete path (with proofs): 8-12 hours
Getting Help
If you get stuck:
- Check the Programming Style guide
- Review Standard Library documentation
- Look at ursus-patterns repository for examples
- Contact Pruvendo team for support
Next Steps
Ready to start? Begin with Designing the Contract!
See Also
- Quick Start - Basic introduction
- Verification - Verification principles
- Translation - Code generation
- Advanced Topics - Expert-level features