2.3 KiB
2.3 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
587d824c367417b2b2512c4f | 测试某个值是否在特定范围内 | 2 | 301598 | test-if-a-value-falls-within-a-specific-range |
--description--
请注意,本项目在这个 Replit 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 actual
等于 expected
,在 +/- delta
的范围内。
--instructions--
在 tests/1_unit-tests.js
中,在 Comparisons
套件里标有 #10
的测试中,将每个 assert
改成 assert.approximately
,让测试通过(结果应该返回 true
)。
选择最小范围(第三个参数)来通过所有测试。 它应该小于 1。
--hints--
不应有未通过的测试
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(
(data) => {
assert.equal(data.state, 'passed');
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
应该为第一个断言选择正确的范围——approximately(actual, expected, range)
。
(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);
}
);
应该为第二个断言选择正确的范围——approximately(actual, expected, range)
。
(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);
}
);
--solutions--
/**
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because they would need to be tested against a full working project.
Please check our contributing guidelines to learn more.
*/