freeCodeCamp/test-for-truthiness.md at 4a74567986d8de748f954e8957adc7613e85193f

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Oliver Eyton-Williams 4a74567986 fix: remove title from Chinese chals

2020-10-06 23:10:08 +05:30

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id, challengeType, videoUrl, localeTitle

id	challengeType	videoUrl	localeTitle
587d824b367417b2b2512c49	2		测试真实性

Description

请注意，本项目在这个 Repl.it 项目的基础上进行开发。你也可以从 GitHub 上克隆。

isTrue() 仅当给出的值为 Boolean 的 true 时可以通过测试；isNotTrue() 则会在给出除 true 以外的值时通过测试。

assert.isTrue(true, '可以通过，因为值的类型是布尔且值为 true');
assert.isTrue('true', '不能通过，因为值的类型是字符串);
assert.isTrue(1, '不过能通过，因为值是数字 1');

isFalse() 和 isNotFalse() 同样存在，表现与上面提到的两个方法类似。

Instructions

使用 assert.isTrue() 或 assert.isNotTrue() 让测试通过。

Tests

tests:
  - text: 不应有未通过的测试
    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); })
  - text: 请选择正确的断言—isTrue 或 isNotTrue
    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); })
  - text: 请选择正确的断言—isTrue 或 isNotTrue
    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); })
  - text: 请选择正确的断言—isTrue 或 isNotTrue
    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); })

Challenge Seed

Solution

/**
  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.
*/

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