openzeppelin-contracts/test/helpers/expectThrow.js

async function expectThrow (promise, message) {
  try {
    await promise;
  } catch (error) {
    // Message is an optional parameter here
    if (message) {
      assert(
        error.message.search(message) >= 0,
        'Expected \'' + message + '\', got \'' + error + '\' instead',
      );
      return;
    } else {
      // TODO: Check jump destination to destinguish between a throw
      //       and an actual invalid jump.
      const invalidOpcode = error.message.search('invalid opcode') >= 0;
      // TODO: When we contract A calls contract B, and B throws, instead
      //       of an 'invalid jump', we get an 'out of gas' error. How do
      //       we distinguish this from an actual out of gas event? (The
      //       ganache log actually show an 'invalid jump' event.)
      const outOfGas = error.message.search('out of gas') >= 0;
      const revert = error.message.search('revert') >= 0;
      assert(
        invalidOpcode || outOfGas || revert,
        'Expected throw, got \'' + error + '\' instead',
      );
      return;
    }
  }
  assert.fail('Expected throw not received');
}

module.exports = {
  expectThrow,
};