API Testing Fundamentals Test

API testing is the process of evaluating the functionality, performance, security, and reliability of an API (Application Programming Interface).

Available in

  • English

16 Skills measured

  • Understanding of API technologies
  • Test case creation
  • Test execution and reporting
  • Knowledge of programming languages
  • API security testing
  • Performance testing
  • HTTP & REST Fundamentals
  • Request/Response Modeling
  • Status Codes & Error Semantics
  • Data & Serialization
  • Auth & Access Control (Concepts)
  • Test Design & Coverage Strategy
  • Validation & Contract Testing (Tool-neutral)
  • Reliability, Performance & Rate Limiting (Basics)
  • Security Hygiene for APIs
  • Reporting, Environments & CI Fundamentals

Test Type

Software Skills

Duration

20 mins

Level

Intermediate

Questions

18

Use of API Testing Fundamentals Test

API testing is the process of evaluating the functionality, performance, security, and reliability of an API (Application Programming Interface).

API Testing is crucial in software development as it ensures the quality of APIs that make up the applications. This assessment evaluates the candidate’s understanding of API testing and its practical application, including different testing techniques and tools used in the process.

API Testing assesses the candidate’s ability to identify and resolve issues while interacting with APIs and testing the application’s functionality, security, and performance. The test covers essential sub-skills like API endpoint testing, RESTful API testing, error handling, security testing, and load testing.

Assessing a candidate’s API testing skills is crucial while hiring as it ensures the quality of the application, prevents potential risks and helps organizations maintain a good reputation. A candidate with a strong API testing skill set can identify issues early in the development process, leading to cost reduction and timely delivery. They can also effectively communicate the issues to developers and provide them with valuable insights into improving the application’s performance and security.

Skills measured

Assessing a candidate's understanding of API technologies is crucial to determine their expertise in creating and testing APIs. The subskill includes knowledge of API architectures, types of APIs, RESTful API principles, API documentation, API testing tools, and the API lifecycle.

Test case creation is an essential subskill in API testing as it enables candidates to develop effective test cases, which ensure the quality and reliability of APIs. It includes defining test objectives, selecting appropriate test data, creating test cases, and reviewing and validating test cases.

Test execution and reporting involve executing test cases and documenting the results to provide feedback to the development team. This subskill assesses a candidate's ability to execute test cases, log defects, and report test results accurately.

Assessing a candidate's knowledge of programming languages such as Java, Python, C#, or Ruby is crucial to determine their ability to write code for test automation and to create complex test cases.

API security testing is a critical subskill in API testing as it ensures the security of sensitive information shared through APIs. The subskill includes knowledge of security testing tools, OWASP top 10 security risks, and security testing methodologies.

Performance testing is an essential subskill in API testing as it ensures that APIs meet performance requirements such as response time, throughput, and concurrency. The subskill includes knowledge of performance testing tools, performance testing methodologies, and load testing.

  • Sub-skills: resources_uris, idempotency, safety, caching, content_negotiation, curl_basics
  • Tags: http, rest, uri, idempotent, safe, cache, vary, curl
  • Sub-skills: path_vs_query, headers_accept_ct_auth, pagination, request_body_vs_form, response_structure
  • Tags: headers, accept, content-type, query, path, pagination, body, form
  • Sub-skills: families, common_codes, problem_details
  • Tags: status-codes, 1xx-5xx, problem-details, rfc9110
  • Sub-skills: json_xml, media_types, encoding_utf8, multipart_upload, partial_responses, file_download
  • Tags: json, xml, media-type, utf-8, multipart, range
  • Sub-skills: api_keys, basic_vs_bearer, oauth2_flows, scopes, token_refresh, least_privilege
  • Tags: authn, authz, oauth2, scopes, token, bearer, basic
  • Sub-skills: functional_vs_integration, contract_tests, positive_negative, boundary_equivalence, smoke_regression, idempotency_checks
  • Tags: test-design, coverage, boundary, equivalence, smoke, regression
  • Sub-skills: assert_status_headers_body, json_schema_concepts, backward_compatibility, openapi_reading
  • Tags: assertions, schema, contract, compatibility, openapi, swagger
  • Sub-skills: latency_throughput, retries_backoff_jitter, 429_handling, timeouts, circuit_breaker_concept
  • Tags: latency, throughput, retry, backoff, 429, timeout, resilience
  • Sub-skills: input_validation, authn_vs_authz, sqli_basics, idor_bola, tls_basics
  • Tags: security, validation, sqli, idor, bola, tls, 401, 403
  • Sub-skills: fixtures_data, env_parity_dev_stage_prod, pass_fail_criteria, evidence_logs, flaky_triage, ci_gates
  • Tags: reporting, fixtures, environments, logs, ci, gates, flaky

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Recruiter efficiency

6x

Recruiter efficiency

Decrease in time to hire

55%

Decrease in time to hire

Candidate satisfaction

94%

Candidate satisfaction

Subject Matter Expert Test

The API Testing Fundamentals Subject Matter Expert

Testlify’s skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

Why choose Testlify

Elevate your recruitment process with Testlify, the finest talent assessment tool. With a diverse test library boasting 3000+ tests, and features such as custom questions, typing test, live coding challenges, Google Suite questions, and psychometric tests, finding the perfect candidate is effortless. Enjoy seamless ATS integrations, white-label features, and multilingual support, all in one platform. Simplify candidate skill evaluation and make informed hiring decisions with Testlify.

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Top five hard skills interview questions for API Testing Fundamentals

Here are the top five hard-skill interview questions tailored specifically for API Testing Fundamentals. These questions are designed to assess candidates’ expertise and suitability for the role, along with skill assessments.

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Why this matters?

It helps evaluate the candidate's ability to design API tests that can perform consistently across various platforms and devices.

What to listen for?

The candidate's understanding of the common issues that can occur while testing on different platforms and devices and their approach to solving them.

Why this matters?

It helps assess the candidate's ability to identify the critical APIs to be tested and prioritize them based on business needs.

What to listen for?

The candidate's approach to identifying the essential APIs, their understanding of business requirements and priorities, and their ability to provide a clear rationale for their approach.

Why this matters?

It helps evaluate the candidate's ability to identify security threats, design security tests, and ensure the security of APIs.

What to listen for?

The candidate's understanding of common security vulnerabilities, their approach to designing security tests, and their ability to identify and remediate security vulnerabilities.

Why this matters?

It helps assess the candidate's ability to design and execute performance tests to ensure that APIs can handle a large number of requests.

What to listen for?

The candidate's understanding of load testing concepts and tools, their approach to identifying and creating load scenarios, and their ability to analyze the test results.

Why this matters?

It helps assess the candidate's ability to measure the effectiveness of their testing efforts and improve the quality of API tests.

What to listen for?

The candidate's understanding of testing metrics and their approach to analyzing and using testing data to improve the quality of API tests.

Frequently asked questions (FAQs) for API Testing Fundamentals Test

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An API Testing assessment is an evaluation process that tests a candidate's skills and knowledge in testing the functionality, reliability, performance, and security of APIs.

An API Testing assessment can be used to assess the skills and abilities of candidates applying for roles such as API tester, software developer, quality assurance engineer, and technical lead. The assessment helps identify candidates who can effectively test the APIs and ensure their quality and functionality.

Software Developer/Engineer Quality Assurance (QA) Engineer Automation Engineer Integration Specialist DevOps Engineer Technical Project Manager Solutions Architect Technical Support Engineer

Understanding of API technologies Test case creation Test execution and reporting Knowledge of programming languages API security testing Performance testing

An API Testing assessment is important as it helps organizations evaluate the candidate's ability to test APIs and ensure their reliability, functionality, and security. It also ensures that the candidate has a good understanding of the API testing process, methodologies, and tools, and can effectively identify and report issues during testing.

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