2.6 KiB
2.6 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
587d824b367417b2b2512c4a | 用两个等号断言相等 | 2 | 301609 | use-the-double-equals-to-assert-equality |
--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。
equal()
使用 ==
比较对象。
--instructions--
在 tests/1_unit-tests.js
中,在 Equality
套件里标有 #5
的测试里,将每个 assert
改为 assert.equal
或 assert.notEqual
,通过测试(应该返回 true
)。 不要修改传给断言的参数。
--hints--
应通过所有测试。
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').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方法:equal
或 notEqual
。
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
(data) => {
assert.equal(
data.assertions[0].method,
'equal',
'Numbers are coerced into strings with == '
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
应该为第二个断言选择正确的方法:equal
或 notEqual
。
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
(data) => {
assert.equal(
data.assertions[1].method,
'notEqual',
' == compares object references'
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
应该为第三个断言选择正确的方法:equal
或 notEqual
。
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
(data) => {
assert.equal(
data.assertions[2].method,
'equal',
"6 * '2' is 12 ! It should be equal to '12'"
);
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
应该为第四个断言选择正确的方法:equal
或 notEqual
。
(getUserInput) =>
$.get(getUserInput('url') + '/_api/get-tests?type=unit&n=4').then(
(data) => {
assert.equal(data.assertions[3].method, 'notEqual', "6 + '2' is '62'...");
},
(xhr) => {
throw new Error(xhr.responseText);
}
);
--solutions--
/**
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.
*/