my-first-experiences-with-solidity-smart-contracts-8.js

it('should allow only the owner to change the contract name', async function() {
    const instance = await NameStorageExample.deployed();
    const CONTRACT_NAME_TO_CHANGE = "ChangedNameStorageExample";

    // check if someone other than the owner is eligible to change the contract name
    // function will revert if not the owner tries so
    // note: account[0] is the owner of the contract
    await expectRevert(
      instance.changeContractName(CONTRACT_NAME_TO_CHANGE,
        fromAccount(accounts, 1)
      )
    )

    // let the owner change the name
    const tx1 = await instance.changeContractName(CONTRACT_NAME_TO_CHANGE);
    const contractNameAfter = await instance.contractName();

    await assert.equal(contractNameAfter,
      CONTRACT_NAME_TO_CHANGE, "not equal");
});