Implement Foundry Invariant Testing for Smart Contracts

[github-actions]

🎯 Context

Found 1392 contracts but only 207 test files.

💡 Reasoning

Invariant testing is crucial for finding edge cases in smart contracts. It complements exploit development by ensuring contracts maintain critical properties under all conditions.

📋 Implementation Steps

1. Configure Foundry with high fuzz runs (already in foundry.toml)
2. Define invariants for each contract (e.g., total supply, balance consistency)
3. Implement invariant test contracts
4. Run with CI profile (10,000+ runs)

📝 Example

contract InvariantTests is Test {
    MyContract target;
    
    function setUp() public {
        target = new MyContract();
        targetContract(address(target));
    }
    
    function invariant_balanceNeverNegative() public {
        assertGe(target.balance(), 0, "Balance should never be negative");
    }
    
    function invariant_totalSupplyConsistent() public {
        uint256 sumBalances = 0;
        for (uint i = 0; i < target.userCount(); i++) {
            sumBalances += target.balances(i);
        }
        assertEq(sumBalances, target.totalSupply(), "Sum of balances equals total supply");
    }
}

📊 Expected Impact

Discover state inconsistencies, improve contract reliability, find exploit vectors

Effort: medium

Priority: high

[github-actions]

🔄 Updated Recommendation

🎯 Context

Found 1392 contracts but only 207 test files.

💡 Reasoning

Invariant testing is crucial for finding edge cases in smart contracts. It complements exploit development by ensuring contracts maintain critical properties under all conditions.

📋 Implementation Steps

1. Configure Foundry with high fuzz runs (already in foundry.toml)
2. Define invariants for each contract (e.g., total supply, balance consistency)
3. Implement invariant test contracts
4. Run with CI profile (10,000+ runs)

📝 Example

contract InvariantTests is Test {
    MyContract target;
    
    function setUp() public {
        target = new MyContract();
        targetContract(address(target));
    }
    
    function invariant_balanceNeverNegative() public {
        assertGe(target.balance(), 0, "Balance should never be negative");
    }
    
    function invariant_totalSupplyConsistent() public {
        uint256 sumBalances = 0;
        for (uint i = 0; i < target.userCount(); i++) {
            sumBalances += target.balances(i);
        }
        assertEq(sumBalances, target.totalSupply(), "Sum of balances equals total supply");
    }
}

📊 Expected Impact

Discover state inconsistencies, improve contract reliability, find exploit vectors

Effort: medium

Priority: high

---

Updated by AI Engineer (2026-01-19T06:13:52.901Z)

[github-actions]

🔄 Updated Recommendation

🎯 Context

Found 1392 contracts but only 207 test files.

💡 Reasoning

Invariant testing is crucial for finding edge cases in smart contracts. It complements exploit development by ensuring contracts maintain critical properties under all conditions.

📋 Implementation Steps

1. Configure Foundry with high fuzz runs (already in foundry.toml)
2. Define invariants for each contract (e.g., total supply, balance consistency)
3. Implement invariant test contracts
4. Run with CI profile (10,000+ runs)

📝 Example

contract InvariantTests is Test {
    MyContract target;
    
    function setUp() public {
        target = new MyContract();
        targetContract(address(target));
    }
    
    function invariant_balanceNeverNegative() public {
        assertGe(target.balance(), 0, "Balance should never be negative");
    }
    
    function invariant_totalSupplyConsistent() public {
        uint256 sumBalances = 0;
        for (uint i = 0; i < target.userCount(); i++) {
            sumBalances += target.balances(i);
        }
        assertEq(sumBalances, target.totalSupply(), "Sum of balances equals total supply");
    }
}

📊 Expected Impact

Discover state inconsistencies, improve contract reliability, find exploit vectors

Effort: medium

Priority: high

---

Updated by AI Engineer (2026-01-26T06:13:05.727Z)

[github-actions]

🔄 Updated Recommendation

🎯 Context

Found 1392 contracts but only 207 test files.

💡 Reasoning

Invariant testing is crucial for finding edge cases in smart contracts. It complements exploit development by ensuring contracts maintain critical properties under all conditions.

📋 Implementation Steps

1. Configure Foundry with high fuzz runs (already in foundry.toml)
2. Define invariants for each contract (e.g., total supply, balance consistency)
3. Implement invariant test contracts
4. Run with CI profile (10,000+ runs)

📝 Example

contract InvariantTests is Test {
    MyContract target;
    
    function setUp() public {
        target = new MyContract();
        targetContract(address(target));
    }
    
    function invariant_balanceNeverNegative() public {
        assertGe(target.balance(), 0, "Balance should never be negative");
    }
    
    function invariant_totalSupplyConsistent() public {
        uint256 sumBalances = 0;
        for (uint i = 0; i < target.userCount(); i++) {
            sumBalances += target.balances(i);
        }
        assertEq(sumBalances, target.totalSupply(), "Sum of balances equals total supply");
    }
}

📊 Expected Impact

Discover state inconsistencies, improve contract reliability, find exploit vectors

Effort: medium

Priority: high

---

Updated by AI Engineer (2026-02-02T06:30:04.999Z)

[github-actions]

🔄 Updated Recommendation

🎯 Context

Found 1392 contracts but only 207 test files.

💡 Reasoning

Invariant testing is crucial for finding edge cases in smart contracts. It complements exploit development by ensuring contracts maintain critical properties under all conditions.

📋 Implementation Steps

1. Configure Foundry with high fuzz runs (already in foundry.toml)
2. Define invariants for each contract (e.g., total supply, balance consistency)
3. Implement invariant test contracts
4. Run with CI profile (10,000+ runs)

📝 Example

contract InvariantTests is Test {
    MyContract target;
    
    function setUp() public {
        target = new MyContract();
        targetContract(address(target));
    }
    
    function invariant_balanceNeverNegative() public {
        assertGe(target.balance(), 0, "Balance should never be negative");
    }
    
    function invariant_totalSupplyConsistent() public {
        uint256 sumBalances = 0;
        for (uint i = 0; i < target.userCount(); i++) {
            sumBalances += target.balances(i);
        }
        assertEq(sumBalances, target.totalSupply(), "Sum of balances equals total supply");
    }
}

📊 Expected Impact

Discover state inconsistencies, improve contract reliability, find exploit vectors

Effort: medium

Priority: high

---

Updated by AI Engineer (2026-02-09T07:08:36.172Z)