Why you should use Jest Test?

The Jest -test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Kendskab til at bruge spids til testautomation og skrivning af testtilfælde Ekspertise i testmetodologier og bedste praksis Dybdegående viden om JavaScript og dets grundlæggende elementer Evne til at arbejde med datalag i softwareudvikling Erfaring med statistiske lag og deres integration i systemer Forståelse af initialisatorer og deres rolle i applikationsopsætningen Dygtige til at udføre og analysere testresultater Fortrolighed med mocha backends til kørende testsuiter Dygtige til at arbejde med beregningslag i softwaresystemer Kendskab til værktøjslag og deres indflydelse på systemets ydeevne

Jest Test

Q: What topics are covered in the Jest Test?

Datalag Statistiske lag Initialisatorer Testudførelse Mocha backends Beregningslag Værktøjslag CPU -backend med indfødt udvidelse

About the test:

Den spøgte online-test bruger spørgsmål med flere valg til at evaluere kandidater om deres viden om spøg, som er en populær JavaScript-testramme, der bruges til test af React og Node.js-applikationer. Testen dækker emner, såsom test af grundlæggende elementer, testdrevet udvikling, jest-konfiguration og opsætning, testmatchere og påstande, hån og spionage, async-test og snapshot-test. Testen har til formål at evaluere kandidater om deres evne til at skrive effektive og vedligeholdelige testtilfælde, fejlfinding og fejlfinding af testproblemer og integrere spids med andre værktøjer og rammer.

Covered skills:

Datalag
Initialisatorer
Mocha backends
Værktøjslag

Statistiske lag
Testudførelse
Beregningslag
CPU -backend med indfødt udvidelse

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9 reasons why

Adaface Jest Assessment Test is the most accurate way to shortlist Node.js Software Engineers

Reason #1

Tests for on-the-job skills

The Jest Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Evne til at skrive effektive og effektive jest -testtilfælde
Evne til at implementere og bruge testrammer til JavaScript
Evne til at arbejde med data og statistik i testning
Evne til at initialisere og oprette testmiljøer
Evne til at udføre tests og analysere resultater
Forståelse af mokka backends og dens anvendelse til testning
Forståelse af beregningslag og dets rolle i testning
Evne til at bruge værktøjslag til test
Fortrolighed med CPU -backend og indfødte udvidelser
Forståelse af datalag og deres betydning i testning
Kendskab til statistiske lag og deres betydning for testning
Bevidsthed om initialisers rolle i testning

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Dette er kun en lille prøve fra vores bibliotek med 10.000+ spørgsmål. De faktiske spørgsmål om dette Jest -test vil være ikke-gåbart.

🧐 Question
Easy Floating points	Solve
Check the following Jest tests: Which of the tests will pass?
Medium Database testcase Regression Testing	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
Medium Decision Table	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
Easy Cart Checkout Incident Report	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
Medium Async Await Promises Promises Async-Await	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill
	Easy Floating points	2 mins Jest	Solve
Check the following Jest tests: Which of the tests will pass?
	Medium Database testcase Regression Testing	2 mins Testing	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
	Medium Decision Table	3 mins Testing	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
	Easy Cart Checkout Incident Report	2 mins Testing	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Floating points	Jest	Easy	2 mins	Solve
Check the following Jest tests: Which of the tests will pass?
	Database testcase Regression Testing	Testing	Medium	2 mins	Solve
Adaface is developing a new database system called “Helen”. The tester at Adaface developed the following testcase for regression testing: 1. Open Helen 2. Open “Students” database 3. Enter data for “Sid” 4. Set checkpoint 5. Store “Sid” data in “Students” 6. Restart Helen 7. Read “Sid” data from “Students” 8. Compare checkpoint with the contents When the tester ran the testcase the first time, it worked as expected. Pick the correct statements: A: When the test case is ran the second time, the data entry for “Sid” already exists in the database. B: When the test case is ran the second time, it performs exactly as it did the first time C: The testcase is a good example for regression testing “Helen” D: The testcase is not a good example for regression testing “Helen” since the system behaves differently when the testcase is ran the second time
	Decision Table	Testing	Medium	3 mins	Solve
Check the following decision table: What are the expected actions for following testcases? I: Joey's age is 22. He is a smoker residing in India II: Jennifer's age is 62. She is a non-smoker not residing in India A) I - Insure, 10% discount. II - Insure, no discount B) I - Don't insure. II - Don't insure C) I - Insure, no discount. II - Don't insure D) I - Insure, no discount. II - Insure, 10% discount
	Cart Checkout Incident Report	Testing	Easy	2 mins	Solve
Review the following incident report written QA team of LWB, Little White Book (an e-commerce app): 1. Place any items in the cart (Say “Nike FST Men”). 2. Place any other (different) item in the shopping cart (Say “Nike Air Max”). 3. Remove “Nike FST Men” from the shopping cart, but leave “Nike Air Max” in the cart. 4. Click on “Check out” button. 5. Expect the app to display the check out screen, instead ‘No items in the shopping cart. Click continue to go back to shopping.’ error message is shown as a popup. 6. Click “Continue”. 7. Expect the app to go to shopping screen to add/remove items from the cart. Instead the app crashes. 8. The error in steps 5 and 7 occurred in every attempt of 5 attempts (1 2 3 4 and 6). Which of the following information is missing from the incident report?
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?

Reason #4

1200+ customers in 75 countries

Med Adaface var vi i stand til at optimere vores indledende screeningsproces med op mod 75 %, hvilket frigjorde kostbar tid for både ansættelsesledere og vores talentanskaffelsesteam!

Brandon Lee, Leder af mennesker, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Jest -test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Jest -test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About the Jest Online Test

Why you should use Pre-employment Jest Test?

The Jest -test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Kendskab til at bruge spids til testautomation og skrivning af testtilfælde
Ekspertise i testmetodologier og bedste praksis
Dybdegående viden om JavaScript og dets grundlæggende elementer
Evne til at arbejde med datalag i softwareudvikling
Erfaring med statistiske lag og deres integration i systemer
Forståelse af initialisatorer og deres rolle i applikationsopsætningen
Dygtige til at udføre og analysere testresultater
Fortrolighed med mocha backends til kørende testsuiter
Dygtige til at arbejde med beregningslag i softwaresystemer
Kendskab til værktøjslag og deres indflydelse på systemets ydeevne

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Jest Test?

statistiske lag </H4> <p> Statistiske lag involverer brugen af statistiske modeller og algoritmer til at analysere data og udtrække meningsfuld indsigt. Denne færdighed er vigtig at måle, når den vurderer kandidatens evne til at anvende statistiske teknikker i dataanalyse og beslutningstagning. </p> <h4> initialisatorer
initialisatorer i softwareudvikling er funktioner eller kodeblokke, der er udført for at initialisere staten eller opsætningen af et program eller et program. Denne færdighed måles for at evaluere kandidatens forståelse af initialiseringsprocesser for at sikre korrekt programinitialisering og opsætning.
testudførelse
Testudførelse henviser til processen med at køre og validere testsager mod software eller systemer. Måling af denne færdighed hjælper med at vurdere kandidatens evne til effektivt at udføre test, identificere og rapportere fejl og sikre kvaliteten og pålideligheden af softwaren.
mokka backends
mocha backends tester rammer I JavaScript til skrivning og udførelse af testsager. Denne færdighed måles for at evaluere kandidatens viden om mokka og deres færdigheder i at opsætte testmiljøer og skrive testtilfælde ved hjælp af mokka i Javascript.
beregningslag </H4> <p> Beregningslaget refererer til det Komponenter eller moduler, der er ansvarlige for at udføre komplekse beregninger eller beregninger i softwaresystemer. Denne færdighed er vigtig at måle, når den vurderer kandidatens evne til at designe og implementere effektive algoritmer og udføre højtydende beregninger. </p> <h4> værktøjslag
Hjælpelag i softwareudvikling er moduler eller komponenter der giver almindelige funktionaliteter eller værktøjer til at understøtte den vigtigste funktionalitet i en applikation. Denne færdighed måles for at evaluere kandidatens forståelse og erfaring med at skabe og bruge værktøjsmoduler til at forbedre funktionaliteten og vedligeholdeligheden af softwaresystemer.
CPU -backend med native udvidelse
CPU -backend med indfødt Udvidelse henviser til integrationen af CPU-centreret behandlingsfunktioner og native udvidelser i softwaresystemer. Denne færdighed måles for at vurdere kandidatens ekspertise i optimering af kodepræstation ved at anvende CPU-specifikke optimeringer og inkorporere oprindelige udvidelser for øget effektivitet og hastighed.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Jest -test to be based on.
Jest Basics
Jest -matchere
Jest spottende
Jest -konfiguration
Enhedstest
Integrationstest
Datamanipulation
Data validering
Datalagring
Dataindhentning
Statistisk analyse
Statistisk modellering
Statistisk visualisering
Beregningskoncepter
Beregningsalgoritmer
Beregningsoptimering
Initializer implementering
Initializer -konfiguration
Testudførelseslivscyklus
Testresultatanalyse
Mocha -konfiguration
Mocha Test Suites
Mocha Hooks
Hjælpefunktioner
Hjælpebiblioteker
CPU -backend -brug
Native Extension Integration
Async -test
Kantetest -test
Testdækningsanalyse
Måling af kodepræstation
Fejlhåndtering
Test debugging
Testrapportering
Testprincipper
Testningsmetoder
Testdokumentation
Kontinuerlig integration
Test automatisering
Kode refactoring
Kodeanmeldelse
Kodning af bedste praksis
Testdrevet udvikling
Adfærdsdrevet udvikling
Vurdering af kodekvalitet
Sikkerhedstest
UI -test
API -test
Funktionel test
Regressionstest
Undersøgende test
Præstationstest
Belastningstest
Tilgængelighedstest
Tværbrowser-test
Test på tværs af platform
Mobil testning

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What roles can I use the Jest Test for?

Node.js Software Engineer
Front-end-udvikler

How is the Jest Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Ekspertise i CPU -backends med indfødte udvidelser
Solid forståelse af softwarearkitektur og designmønstre
Evne til at skrive effektiv og vedligeholdelig kode
Erfaring med versionskontrolsystemer som Git
Kendskab til kontinuerlig integration og kontinuerlige leveringsprocesser
Fortrolighed med fejlsøgningsteknikker og værktøjer
Forståelse af softwaretestrammer og biblioteker
Evne til at skrive klar og kortfattet teknisk dokumentation
Stærk problemløsning og analytiske færdigheder
Effektive kommunikations- og samarbejdsevner
Tilpasningsevne til nye teknologier og rammer

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Ansættelseslederne mente, at de gennem de tekniske spørgsmål, som de stillede under panelinterviewene, var i stand til at fortælle, hvilke kandidater der havde bedre score og differentieret sig med dem, der ikke scorede så godt. De er meget tilfreds med kvaliteten af de kandidater, der er nomineret med Adaface-screeningen.

85%

Reduktion i screeningstid

Se den fulde casestudie

Jest Hiring Test Ofte stillede spørgsmål

Kan jeg kombinere flere færdigheder i en brugerdefineret vurdering?

Ja absolut. Brugerdefinerede vurderinger er oprettet baseret på din jobbeskrivelse og vil omfatte spørgsmål om alle must-have-færdigheder, du angiver.

Har du nogen anti-cheating eller proctoring-funktioner på plads?

Vi har følgende anti-cheating-funktioner på plads:

Ikke-gåbare spørgsmål
IP Proctoring
Webproctoring
Webcam Proctoring
Detektion af plagiering
Sikker browser

Læs mere om Proctoring Features.

Hvordan fortolker jeg testresultater?

Den primære ting at huske på er, at en vurdering er et elimineringsværktøj, ikke et udvælgelsesværktøj. En færdighedsvurdering er optimeret for at hjælpe dig med at eliminere kandidater, der ikke er teknisk kvalificerede til rollen, den er ikke optimeret til at hjælpe dig med at finde den bedste kandidat til rollen. Så den ideelle måde at bruge en vurdering på er at beslutte en tærskelværdi (typisk 55%, vi hjælper dig med benchmark) og inviterer alle kandidater, der scorer over tærsklen for de næste interviewrunder.

Hvilken oplevelsesniveau kan jeg bruge denne test til?

Hver Adaface -vurdering tilpasses til din jobbeskrivelse/ ideel kandidatperson (vores emneeksperter vælger de rigtige spørgsmål til din vurdering fra vores bibliotek på 10000+ spørgsmål). Denne vurdering kan tilpasses til ethvert erfaringsniveau.

Får hver kandidat de samme spørgsmål?

Ja, det gør det meget lettere for dig at sammenligne kandidater. Valgmuligheder for MCQ -spørgsmål og rækkefølgen af spørgsmål randomiseres. Vi har anti-cheating/proctoring funktioner på plads. I vores virksomhedsplan har vi også muligheden for at oprette flere versioner af den samme vurdering med spørgsmål om lignende vanskelighedsniveauer.