Lawrence Forman ed78bde359 Make the chai helper for rich reverts in dev-utils more robust.
Add rich reverts chai helper tests to `dev-utils`
2019-07-23 15:14:52 -07:00

122 lines
5.6 KiB
TypeScript

import { StandardError } from '@0x/utils';
import * as chai from 'chai';
import { chaiSetup } from '../src';
chaiSetup.configure();
const expect = chai.expect;
class CustomError extends StandardError {
constructor(msg: string) {
super(msg);
}
}
describe('Chai tests', () => {
describe('RichRevertReasons', () => {
describe('#equal', () => {
it('should equate two identical RichRevertReasons', () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new StandardError(message);
expect(reason1).is.equal(reason2);
});
it('should equate two RichRevertReasons where one has missing fields', () => {
const reason1 = new StandardError('foo');
const reason2 = new StandardError();
expect(reason1).is.equal(reason2);
});
it('should not equate two RichRevertReasons with diferent fields', () => {
const reason1 = new StandardError('foo1');
const reason2 = new StandardError('foo2');
expect(reason1).is.not.equal(reason2);
});
it('should not equate two RichRevertReasons with diferent types', () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new CustomError(message);
expect(reason1).is.not.equal(reason2);
});
it('should equate a StandardError to a string equal to message', () => {
const message = 'foo';
const reason = new StandardError(message);
expect(message).is.equal(reason);
});
it('should equate an Error to a StandardError with an equal message', () => {
const message = 'foo';
const reason = new StandardError(message);
const error = new Error(message);
expect(error).is.equal(reason);
});
it('should equate a string to a StandardError with the same message', () => {
const message = 'foo';
const reason = new StandardError(message);
expect(reason).is.equal(message);
});
it('should not equate a StandardError to a string not equal to message', () => {
const reason = new StandardError('foo1');
expect('foo2').is.not.equal(reason);
});
it('should not equate a string to a StandardError with a different message', () => {
const reason = new StandardError('foo1');
expect(reason).is.not.equal('foo2');
});
it('should not equate an Error to a StandardError with a different message', () => {
const reason = new StandardError('foo1');
const error = new Error('foo2');
expect(error).is.not.equal(reason);
});
});
describe('#rejectedWith', () => {
it('should equate a promise that rejects to an identical RichRevertReasons', async () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new StandardError(message);
const promise = (async () => {
throw reason1;
})();
return expect(promise).to.be.rejectedWith(reason2);
});
it('should not equate a promise that rejects to a StandardError with a different messages', async () => {
const reason1 = new StandardError('foo1');
const reason2 = new StandardError('foo2');
const promise = (async () => {
throw reason1;
})();
return expect(promise).to.not.be.rejectedWith(reason2);
});
it('should not equate a promise that rejects to different RichRevertReason types', async () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new CustomError(message);
const promise = (async () => {
throw reason1;
})();
return expect(promise).to.not.be.rejectedWith(reason2);
});
});
describe('#become', () => {
it('should equate a promise that resolves to an identical RichRevertReasons', async () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new StandardError(message);
const promise = (async () => reason1)();
return expect(promise).to.become(reason2);
});
it('should not equate a promise that resolves to a StandardError with a different messages', async () => {
const reason1 = new StandardError('foo1');
const reason2 = new StandardError('foo2');
const promise = (async () => reason1)();
return expect(promise).to.not.become(reason2);
});
it('should not equate a promise that resolves to different RichRevertReason types', async () => {
const message = 'foo';
const reason1 = new StandardError(message);
const reason2 = new CustomError(message);
const promise = (async () => reason1)();
return expect(promise).to.not.become(reason2);
});
});
});
});