Test setup helper added (#1482)

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

* Revert "Dangling commas are now required. (#1359)"

This reverts commit a6889776f4.

* updates

* fixes #1404

* approve failing test

* suggested changes done

* ISafeERC20 removed

* conflict fixes

* fixes #1205

* minor change

* suggested changes

* reviewed changes

* final update

test/introspection/ERC165Checker.test.js

@@ -9,8 +9,7 @@ const DUMMY_UNSUPPORTED_ID = '0xbaddcafe';
 const DUMMY_UNSUPPORTED_ID_2 = '0xbaadcafe';
 const DUMMY_ACCOUNT = '0x1111111111111111111111111111111111111111';
 
-require('chai')
-  .should();
+require('../helpers/setup');
 
 contract('ERC165Checker', function () {
   beforeEach(async function () {