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import * as chai from 'chai';
import * as _ from 'lodash';
import { DoneCallback } from '@0xproject/types';
const expect = chai.expect;
export const callbackErrorReporter = {
reportNoErrorCallbackErrors(done: DoneCallback, expectToBeCalledOnce = true) {
const callback = <T>(f?: (value: T) => void) => {
const wrapped = (value: T) => {
if (_.isUndefined(f)) {
done();
return;
}
try {
f(value);
if (expectToBeCalledOnce) {
done();
}
} catch (err) {
done(err);
}
};
return wrapped;
};
return callback;
},
reportNodeCallbackErrors(done: DoneCallback, expectToBeCalledOnce = true) {
const callback = <T>(f?: (value: T) => void) => {
const wrapped = (error: Error | null, value: T | undefined) => {
if (!_.isNull(error)) {
done(error);
} else {
if (_.isUndefined(f)) {
done();
return;
}
try {
f(value as T);
if (expectToBeCalledOnce) {
done();
}
} catch (err) {
done(err);
}
}
};
return wrapped;
};
return callback;
},
assertNodeCallbackError(done: DoneCallback, errMsg: string) {
const wrapped = <T>(error: Error | null, value: T | undefined) => {
if (_.isNull(error)) {
done(new Error('Expected callback to receive an error'));
} else {
try {
expect(error.message).to.be.equal(errMsg);
done();
} catch (err) {
done(err);
}
}
};
return wrapped;
},
};
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