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ΠΠ°ΠΊ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ ΠΊΠΎΠ΄Π° ΡΠ΅ΡΡΠ°ΠΌΠΈ Π²Π»ΠΈΡΠ΅Ρ Π½Π° ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ ΠΏΡΠΎΠ΄ΡΠΊΡΠ°?
ΠΠΎΠΊΡΡΡΠΈΠ΅ ΠΊΠΎΠ΄Π° ΡΠ΅ΡΡΠ°ΠΌΠΈ ΠΏΠΎΠΌΠΎΠ³Π°Π΅Ρ ΠΎΠ±Π½Π°ΡΡΠΆΠΈΡΡ ΠΎΡΠΈΠ±ΠΊΠΈ ΠΈ ΡΠ½ΠΈΠ·ΠΈΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ Π±Π°Π³ΠΎΠ² Π² ΠΏΡΠΎΠ΄ΡΠΊΡΠ΅. Π§Π΅ΠΌ Π²ΡΡΠ΅ ΠΏΡΠΎΡΠ΅Π½Ρ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΊΠΎΠ΄Π° ΡΠ΅ΡΡΠ°ΠΌΠΈ, ΡΠ΅ΠΌ Π»ΡΡΡΠ΅ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ ΠΏΡΠΎΠ΄ΡΠΊΡΠ°, ΡΠ°ΠΊ ΠΊΠ°ΠΊ ΡΡΠΎ ΠΌΠΎΠΆΠ΅Ρ ΡΠΌΠ΅Π½ΡΡΠΈΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΠΎΡΠΈΠ±ΠΎΠΊ ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌ, ΡΠ²ΡΠ·Π°Π½Π½ΡΡ Ρ Π½ΠΎΠ²ΡΠΌΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡΠΌΠΈ. ΠΠ΄Π½Π°ΠΊΠΎ, ΠΏΡΠΎΡΡΠΎ Π½Π°ΠΏΠΈΡΠ°Π½ΠΈΠ΅ Π±ΠΎΠ»ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° ΡΠ΅ΡΡΠΎΠ² Π½Π΅ Π³Π°ΡΠ°Π½ΡΠΈΡΡΠ΅Ρ Π²ΡΡΠΎΠΊΠΎΠ΅ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ, ΠΏΠΎΡΡΠΎΠΌΡ Π²Π°ΠΆΠ½ΠΎ ΡΠ°ΠΊΠΆΠ΅ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΡΡ Ρ ΠΎΡΠΎΡΠ΅Π΅ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅, ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ ΡΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΠ΅ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠΎΠ΄ΡΠΊΡΠ°. ΠΡΠΈΠΌΠ΅Ρ ΠΊΠΎΠ΄Π° Π½Π° JavaScript ΠΈ ΡΡΠ΅ΠΉΠΌΠ²ΠΎΡΠΊΠ΅ Jest Π΄Π»Ρ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΏΠΎΠΊΡΡΡΠΈΡ ΡΠ΅ΡΡΠ°ΠΌΠΈ:
javascript Copy code
// Π€ΡΠ½ΠΊΡΠΈΡ Π½Π°Ρ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΡΠ»Π° Π² ΠΌΠ°ΡΡΠΈΠ²Π΅
function findMax(arr) {
if (arr.length === 0) {
return null;
}
let max = arr[0];
for (let i = 1; i < arr.length; i++) {
if (arr[i] > max) {
max = arr[i];
}
}
return max;
}
// Π’Π΅ΡΡΡ Π΄Π»Ρ ΡΡΠ½ΠΊΡΠΈΠΈ
describe("findMax", () => {
it("returns the maximum value from the array", () => {
expect(findMax([1, 2, 3])).toEqual(3);
expect(findMax([-10, 5, 0])).toEqual(5);
});
it("returns null for an empty array", () => {
expect(findMax([])).toBeNull();
});
});
ΠΡΠΎΡ ΠΊΠΎΠ΄ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅Ρ ΡΡΠ΅ΠΉΠΌΠ²ΠΎΡΠΊ ΡΠ΅ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ Jest Π΄Π»Ρ ΠΏΡΠΎΠ²Π΅ΡΠΊΠΈ ΡΡΠ½ΠΊΡΠΈΠΈ findMax ΠΈ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΏΡΠΎΡΠ΅Π½ΡΠ° ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΊΠΎΠ΄Π° ΡΠ΅ΡΡΠ°ΠΌΠΈ. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ Jest ΠΌΠΎΠΆΠ½ΠΎ ΡΠΌΠΎΡΡΠ΅ΡΡ Π½Π°ΡΡΠΎΠ»ΡΠΊΠΎ Π»ΠΈ ΡΠ΅ΡΡΠΈΡΡΠ΅ΠΌΠ°Ρ ΡΡΠ½ΠΊΡΠΈΡ ΠΏΠΎΠΊΡΡΡΠ° ΡΠ΅ΡΡΠ°ΠΌΠΈ.
how many expect can we add inside a test of jest?
You can add as many expect assertions as you want inside a single test in Jest. However, it's a good practice to keep tests small and test only one thing at a time, so you might consider breaking up tests into multiple specific tests with a single expectation in each. This can make tests more manageable and easier to debug if something goes wrong.
Here's an example of a Jest test with multiple expect assertions in JavaScript:
javascript Copy code
test('adding positive numbers', () => {
expect(2 + 2).toBe(4);
expect(5 + 10).toBe(15);
expect(100 + 200).toBe(300);
});
If you have any other questions, you can easily reach out to us here
AI stands for Artificial Intelligence. AI bots are able to learn from conversations with users and expand their knowledge this way.
SheCodes Athena will help you with technical questions about your code using artificial intelligence to find the answer. Imagine a super powerful human who has memorized everything on the internet and can access that knowledge in a matter of seconds. π€―
SheCodes Athena can answer most coding-related questions, even complicated ones! It can even find bugs in your code and tell you how to fix them in just a few seconds. Impressive, right?
Just remember we're still in testing mode so the AI may return strange or incorrect replies. Feel free to message us if this happens!
SheCodes Athena can only reply to coding-related technical questions. The same type of questions you would ask in the channels on Slack.
For questions that are not coding-related, write us here π
You should treat Athena like a SheCodes team member, so always be polite! π Ask your questions as detailed as possible, just like you would do on Slack.
Here are some examples:
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For now, SheCodes Athena is limited to 5 questions per day for each student.
In that case, you can either ask SheCodes Athena a follow-up question, or you can post on the designated weekly channel on Slack!
Our technical assistants are still available on Slack and are always happy to help! ππͺ
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Much like the goddess Athena, SheCodes Athena is also incredibly wise and can solve complicated coding puzzles in a matter of seconds! π
Not likely. AI can automate tasks and make developers' jobs more efficient but it can't fully replace the human ability to deal with complex software. And AI will still require human developers to supervise and improve it further.
So developers may see their tasks change but they won't be replaced by AI. π©βπ»π€π»