pragma solidity >= 0.5.0 < 0.7.0; import "./simple_string.sol"; contract StringTest { SimpleString foo; function beforeAll() public { foo = new SimpleString(); } function initialValueShouldBeHelloWorld() public returns (bool) { return Assert.equal(foo.get(), "Hello world!", "initial value is not correct"); } function valueShouldNotBeHelloWordl() public returns (bool) { return Assert.notEqual(foo.get(), "Hello wordl!", "value should not be hello wordl"); } }