2018-10-04 13:37:37 +00:00
---
id: 587d824b367417b2b2512c48
title: Use Assert.isOK and Assert.isNotOK
challengeType: 2
2019-08-05 16:17:33 +00:00
forumTopicId: 301607
2021-01-13 02:31:00 +00:00
dashedName: use-assert-isok-and-assert-isnotok
2018-10-04 13:37:37 +00:00
---
2020-11-27 18:02:05 +00:00
# --description--
2020-11-26 18:05:42 +00:00
2020-11-27 18:02:05 +00:00
As a reminder, this project is being built upon the following starter project on [Repl.it ](https://repl.it/github/freeCodeCamp/boilerplate-mochachai ), or cloned from [GitHub ](https://github.com/freeCodeCamp/boilerplate-mochachai/ ).
2019-03-27 11:31:58 +00:00
2020-11-26 18:05:42 +00:00
`isOk()` will test for a truthy value, and `isNotOk()` will test for a falsy value.
2020-11-27 18:02:05 +00:00
To learn more about truthy and falsy values, try our [Falsy Bouncer ](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-algorithm-scripting/falsy-bouncer ) challenge.
2020-11-26 18:05:42 +00:00
2020-11-27 18:02:05 +00:00
# --instructions--
2019-07-18 15:32:12 +00:00
2020-11-26 18:05:42 +00:00
Within `tests/1_unit-tests.js` under the test labelled `#3` in the `Basic Assertions` suite, change each `assert` to either `assert.isOk()` or `assert.isNotOk()` to make the test pass (should evaluate to `true` ). Do not alter the arguments passed to the asserts.
2020-11-27 18:02:05 +00:00
# --hints--
2018-10-04 13:37:37 +00:00
2020-11-27 18:02:05 +00:00
All tests should pass.
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit& n=2').then(
(data) => {
assert.equal(data.state, 'passed');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
2020-11-26 18:05:42 +00:00
2020-11-27 18:02:05 +00:00
You should choose the correct method for the first assertion - `isOk` vs. `isNotOk` .
2018-10-04 13:37:37 +00:00
2020-11-27 18:02:05 +00:00
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit& n=2').then(
(data) => {
assert.equal(data.assertions[0].method, 'isNotOk', 'Null is falsy');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
2018-10-04 13:37:37 +00:00
```
2020-11-27 18:02:05 +00:00
You should choose the correct method for the second assertion - `isOk` vs. `isNotOk` .
2018-10-04 13:37:37 +00:00
2020-11-27 18:02:05 +00:00
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit& n=2').then(
(data) => {
assert.equal(data.assertions[1].method, 'isOk', 'A string is truthy');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
2020-11-26 18:05:42 +00:00
2020-11-27 18:02:05 +00:00
You should choose the correct method for the third assertion - `isOk` vs. `isNotOk` .
2018-10-04 13:37:37 +00:00
2020-11-27 18:02:05 +00:00
```js
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit& n=2').then(
(data) => {
assert.equal(data.assertions[2].method, 'isOk', 'true is truthy');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
```
2018-10-04 13:37:37 +00:00
2020-11-27 18:02:05 +00:00
# --solutions--
2018-10-04 13:37:37 +00:00
```js
2019-10-14 15:30:42 +00:00
/**
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.
*/
2018-10-04 13:37:37 +00:00
```