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freeCodeCamp/curriculum/challenges/english/06-information-security-and-quality-assurance/quality-assurance-and-testing-with-chai/test-if-a-value-falls-within-a-specific-range.english.md
Randell Dawson 9cd57105af fix(curriculum): changed test text to use should for Information Security and Quality Assurance (#37763)
* fix: changed test text to use should

* fix: corrected typo

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

* fix: corrected typo

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

* fix: remove unnecessary backslash

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

* fix: simplified text

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>

* fix: added period

Co-Authored-By: Manish Giri <manish.giri.me@gmail.com>
2019-11-20 09:58:14 -05:00

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---
id: 587d824c367417b2b2512c4f
title: Test if a Value Falls within a Specific Range
challengeType: 2
forumTopicId: 301598
---
## Description
<section id='description'>
As a reminder, this project is being built upon the following starter project on <a href='https://glitch.com/edit/#!/remix/clone-from-repo?REPO_URL=https://github.com/freeCodeCamp/boilerplate-mochachai/'>Glitch</a>, or cloned from <a href='https://github.com/freeCodeCamp/boilerplate-mochachai/'>GitHub</a>.
<code>.approximately(actual, expected, delta, [message])</code>
Asserts that the actual is equal <code>expected</code>, to within a +/- <code>delta</code> range.
</section>
## Instructions
<section id='instructions'>
Use <code>assert.approximately()</code> to make the tests pass.
Choose the minimum range (3rd parameter) to make the test always pass. It should be less than 1.
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: All tests should pass.
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(data => {assert.equal(data.state,'passed'); }, xhr => { throw new Error(xhr.responseText); })
- text: You should use approximately(actual, expected, range) - You should choose the correct range.
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(data => { assert.equal(data.assertions[0].method, 'approximately'); assert.equal(data.assertions[0].args[2], 0.5, 'weirdNumbers(0.5) is in the range (0.5, 1.5]. It\'s within 1 +/- 0.5'); }, xhr => { throw new Error(xhr.responseText); })
- text: You should use approximately(actual, expected, range) - You should choose the correct range.
testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(data => { assert.equal(data.assertions[1].method, 'approximately'); assert.equal(data.assertions[1].args[2], 0.8, 'weirdNumbers(0.2) is in the range (0.2, 1.2]. It\'s within 1 +/- 0.8'); }, xhr => { throw new Error(xhr.responseText); })
```
</section>
## Challenge Seed
<section id='challengeSeed'>
</section>
## Solution
<section id='solution'>
```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.
*/
```
</section>