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Update how-to-test-a-property.md #232

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13 changes: 7 additions & 6 deletions program-analysis/echidna/introduction/how-to-test-a-property.md
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Expand Up @@ -16,8 +16,8 @@ We will see how to test a smart contract with Echidna. The target is the followi

```Solidity
contract Token{
mapping(address => uint) public balances;
function airdrop() public{
mapping(address => uint) public balances;
function airdrop() public{
balances[msg.sender] = 1000;
}
function consume() public{
Expand Down Expand Up @@ -101,12 +101,13 @@ $ echidna-test contract.sol --contract MyContract
The following summarizes the run of Echidna on our example:

```Solidity
contract TestToken is Token{
contract TestToken is Token {
constructor() public {}
function echidna_balance_under_1000() public view returns(bool){

function echidna_balance_under_1000() public view returns(bool) {
return balances[msg.sender] <= 1000;
}
}
}
}
```

```bash
Expand Down