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---
id: 587d824d367417b2b2512c54
title: Usar expresiones regulares para probar una cadena
challengeType: 2
forumTopicId: 301608
dashedName: use-regular-expressions-to-test-a-string
---
# --description--
Como recordatorio, este proyecto está siendo construido con base en el siguiente proyecto inicial [Replit](https://replit.com/github/freeCodeCamp/boilerplate-mochachai), o clonado desde [GitHub](https://github.com/freeCodeCamp/boilerplate-mochachai/).
`match()` verifica que el valor real coincide con la expresión regular del segundo argumento.
# --instructions--
Dentro de `tests/1_unit-tests.js` bajo la prueba etiquetada `#15` en `Strings`, suite cambia cada `assert` a `assert.match` o `assert.notMatch` para pasar la prueba (debe evaluarse como `true`). No modifiques los argumentos pasados a los verificadores.
# --hints--
Todas las pruebas deben pasar.
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
(data) => {
assert.equal(data.state, 'passed');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
Debe elegir el método correcto para la primera aserción - `match` vs `notMatch`.
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
(data) => {
assert.equal(
data.assertions[0].method,
'match',
"'# name:John Doe, age:35' matches the regex"
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
Debe elegir el método correcto para la segunda aserción - `match` vs `notMatch`.
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
(data) => {
assert.equal(
data.assertions[1].method,
'notMatch',
"'# name:Paul Smith III, age:twenty-four' does not match the regex (the age must be numeric)"
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
# --solutions--
```js
/**
Backend challenges don't need solutions,
because they would need to be tested against a full working project.
Please check our contributing guidelines to learn more.
*/
```