64 lines
2.6 KiB
Markdown
64 lines
2.6 KiB
Markdown
---
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id: 587d824b367417b2b2512c49
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title: Test for Truthiness
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challengeType: 2
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forumTopicId: 301596
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---
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## Description
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<section id='description'>
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As a reminder, this project is being built upon the following starter project on <a href="https://repl.it/github/freeCodeCamp/boilerplate-mochachai">Repl.it</a>, or cloned from <a href='https://github.com/freeCodeCamp/boilerplate-mochachai/'>GitHub</a>.
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<code>isTrue()</code> will test for the boolean value <code>true</code> and <code>isNotTrue()</code> will pass when given anything but the boolean value of <code>true</code>.
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```js
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assert.isTrue(true, 'this will pass with the boolean value true');
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assert.isTrue('true', 'this will NOT pass with the string value 'true');
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assert.isTrue(1, 'this will NOT pass with the number value 1');
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```
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<code>isFalse()</code> and <code>isNotFalse()</code> also exist and behave similarly to their true counterparts except they look for the boolean value of <code>false</code>.
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</section>
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## Instructions
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<section id='instructions'>
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Use <code>assert.isTrue()</code> or <code>assert.isNotTrue()</code> to make the tests pass.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: All tests should pass.
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testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(data => {assert.equal(data.state,'passed'); }, xhr => { throw new Error(xhr.responseText); })
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- text: You should choose the right assertion - isTrue vs. isNotTrue.
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testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(data => { assert.equal(data.assertions[0].method, 'isTrue', 'True is true'); }, xhr => { throw new Error(xhr.responseText); })
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- text: You should choose the right assertion - isTrue vs. isNotTrue.
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testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(data => { assert.equal(data.assertions[1].method, 'isTrue', 'Double negation of a truthy value is true'); }, xhr => { throw new Error(xhr.responseText); })
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- text: You should choose the right assertion - isTrue vs. isNotTrue.
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testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=3').then(data => { assert.equal(data.assertions[2].method, 'isNotTrue', 'A truthy object is not true - neither is a false one'); }, xhr => { throw new Error(xhr.responseText); })
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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</section>
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## Solution
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<section id='solution'>
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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</section>
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