Truffle test fails with ReferenceError: GreeterContract is not defined

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1

Hi,

I am getting the ReferenceError while executing truffle test, I got it from a book:
The solidity file is:

//Greeter.sol
                       pragma  solidity >=0.4.0 <0.7.0;
                        contract Greeter{
                           function greet() external pure returns(string memory){
                              return "hello World";
                           }

                        }

The test file is:

    //greeter_test.js
            describe("greet()", ()=>{
            	it ("returns 'Hello World'",async()=>{
            		const greeter = await GreeterContract.deployed();
            		const expected = "Hello, World";
                            const actual = await greeter.greet();
                            assert.equal(actual, expected, "greeted with 'Hello, World'");
            });
            });

The migration file is:

//2_deploy_greeter.js
        const GreeterContract = artifacts.require("Greeter");

        module.exports = function(deployer) {
          deployer.deploy(GreeterContract);
        }

The output of ‘truffle test’ is:

    $ truffle test
    Using network 'test'.


    Compiling your contracts...
    ===========================
    > Compiling ./contracts/Greeter.sol
    > Artifacts written to /tmp/test--6598-k6XhgnYyAOGZ
    > Compiled successfully using:
       - solc: 0.5.16+commit.9c3226ce.Emscripten.clang



      greet()
        1) returns 'Hello World'


      0 passing (3ms)
      1 failing

      1) greet()
           returns 'Hello World':
         ReferenceError: GreeterContract is not defined
          at Context.it (test/greeter_test.js:3:19)

Somebody please guide me how to remove the ReferenceError.

Zulfi.

1 Like
2

Have you imported it like this:

const GreeterContract = artifacts.require('Greeter');
2 Likes
3

Hi,
Thanks a lot for your response. Kindly guide me in which file should I write this:

const GreeterContract = artifacts.require('Greeter');

statement?

Zulfi.

1 Like
4

You got an error from greeter_test.js, so I think you should try in this file.

2 Likes
5

Hi @zak100,

You can have a look at OpenZeppelin Learn guides:
https://docs.openzeppelin.com/learn/writing-automated-tests?pref=truffle#writing-unit-tests

6

Hi,
Thanks. You are right. I thought I have replied. I made the changes and everything is working fine. They were some mistakes in the contract name also (maybe I changed after uploading on this forum) and the returned string was not exactly same (mistakes of ‘,’ and ‘h’ of “hello World” was small. Thanks a lot for helping me.

God blesses you.

Zulfi.

2 Likes