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openzeppelin-contracts/test/helpers/expectThrow.js

28 lines
970 B

const should = require('chai')
.should();
async function expectThrow (promise, message) {
try {
await promise;
} catch (error) {
// Message is an optional parameter here
if (message) {
error.message.should.include(message, 'Expected \'' + message + '\', got \'' + error + '\' instead');
return;
} else {
// TODO: Check jump destination to destinguish between a throw
// and an actual invalid jump.
// 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.)
error.message.should.match(/[invalid opcode|out of gas|revert]/, 'Expected throw, got \'' + error + '\' instead');
return;
}
}
should.fail('Expected throw not received');
}
module.exports = {
expectThrow,
};