pragma solidity >=0.4.21 <0.6.0; import "truffle/Assert.sol"; import "truffle/DeployedAddresses.sol"; import "../contracts/SimpleStorage.sol"; contract TestSimpleStorage { function testItStoresAValue() public { SimpleStorage simpleStorage = SimpleStorage(DeployedAddresses.SimpleStorage()); simpleStorage.set(89); uint expected = 89; Assert.equal(simpleStorage.storedData(), expected, "It should store the value 89."); } }