freeCodeCamp/test-if-a-value-falls-within-a-specific-range.md at dec409a4bd667e4979305cc1e86e0702bbc2c707

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Oliver Eyton-Williams dec409a4bd fix: s/localeTitle/title/g

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

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id, challengeType, forumTopicId, title

id	challengeType	forumTopicId	title
587d824c367417b2b2512c4f	2	301598	测试某个值是否在特定范围内

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。

.approximately(actual, expected, delta, [message]) 断言待测试的值处于 expected +/- delta 的范围内。

Instructions

使用 assert.approximately() 让测试通过。选择最小范围（第三个参数）来通过所有测试。它应该小于 1。

Tests

tests:
  - text: 不应有未通过的测试
    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: 你应使用 approximately(actual, expected, range) 并选择正确的范围
    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: 你应使用 approximately(actual, expected, range) 并选择正确的范围
    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); })

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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