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I'm executing an example in the Truffle Pet Shop tutorial.

While testing with file TestAdoption.sol, I have encountered the following error:

Source truffle / Assert.sol not found

The source code causing the error is:

pragma solidity ^0.4.17;

import "truffle/Assert.sol"; // error source truffle / Assert.sol not found"
import "truffle/DeployedAddresses.sol";// error source truffle/DeployedAddresses.sol not found"
import "../contracts/Adoption.sol";

contract TestAdoption {
  Adoption adoption = Adoption(DeployedAddresses.Adoption());

}

Any suggestions to solve the problem?

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Typically your files will all lie in the contracts/ directory within the truffle project root folder.

If the other contracts are in the same folder as this you need to change your import statements - ./ represents the current folder

import "./Assert.sol";
  • Sorry for not checking it out. Although the code line error, the compile still works well. It took me a long time to fix it. I hope the software development team will fix this error. – xPain Jun 29 '18 at 6:56

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