Revert not throwing error when running truffle test

Question

I have set up a local geth on ubuntu and I'm running my project on it.

While writing test cases, I saw that the test cases which were working fine in testrpc environment started facing issues when run on local geth developement environment.

I don't get any error message from my test case when revert() is caught in my solidity code.

Here the example:

myContract {
   function ExpectedARevertWhenCalled(){
       revert();
   }
} 

---

Now when I call this method in my test. The test cases should fail but no error is thrown.

Can someone please help understand the issue behind it?

FYI: This is how I'm calling the method in my test case:

contract('MyContract', async () => {
  it("myContractFunction", async () => {
    let obj= await TwoKeyReg.new();
    await obj.ExpectedARevertWhenCalled();
  });
});

Answer 1

If your test goal is expecting a revert() then you should do as following

Use revert helper method from openzepplin, named assertRevert.js

module.exports = async promise => {
  try {
    await promise;
    assert.fail('Expected revert not received');
  } catch (error) {
    const revertFound = error.message.search('revert') >= 0;
    assert(revertFound, `Expected "revert", got ${error} instead`);
  }
};

Import the revert to your test code

const assertRevert = require('assertRevert');

Then make your test code like below, mean that you expecting the method to throw a revert

contract('MyContract', async () => {
  it("myContractFunction", async () => {
    let obj= await TwoKeyReg.new();
    await assertRevert(obj.ExpectedARevertWhenCalled());
  });
});