I have this function:
await sendTx(newProxyAddr, false, 'initialize', [0, nullAddr]);
...that produces this error:
Error: VM Exception while processing transaction: reverted with reason string 'Initializable: contract is already initialized'
But when I try to catch the error on a test using:
assert.throws(async () => {
await sendTx(newProxyAddr, false, 'initialize', [0, nullAddr]);
}, Error, 'Thrown');
..., it tells me:
AssertionError: expected [Function] to throw an error
Am I missing something?
Thanks!
You should use Node.js assert.rejects(asyncFn[, error][, message]) API for async function or JS promise.
assert.throws calls getActual(promiseFn) function which will NOT await the promiseFn, see v14.19.3/lib/assert.js#L899
assert.rejects calls await waitForActual(promiseFn) will await the promiseFn, see v14.19.3/lib/assert.js#L909
E.g.
const assert = require('assert');
async function sendTx() {
throw new Error('error happens');
}
(async () => {
await assert.rejects(
async () => {
await sendTx();
},
{
name: 'Error',
message: 'error happens',
},
);
})();