Wiremock Interview Questions

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  1. Wiremock Intro?
    • Serves canned responses to particular requests (stubbing), and that captures incoming requests so that they can be checked later (verification).
    • External to application code which helps in the testing app in Dev and ST(System Testing) environment
    • Helps in testing negative Scenarios like network latency
    • Language Agnostic and production like testing
  2. How to differentiate Positive and Negative Scenarios?
    It could be done based on method(GET, POST, DELETE, PUT), Path(/employee, /success) and based on Parameter.

     GET /employee?name=mugil
       
 Method - GET
 Path   - /employee
 Params - name

  3. How priority of Stub Response is selected when Paths overlap?
    Stub is lowest no in priority would be selected.

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    //Priority 1
    wireMockServer.stubFor(get("/welcome")
        .atPriority(1)
        .willReturn(aResponse()
              .withBody("Welcome with Priority 1")));
     
    //Priority 2
          wireMockServer.stubFor(get("/welcome")
      .atPriority(2)
                  .willReturn(aResponse()
                  .withBody("Welcome with Priority 2")));

    Output

    Welcome with Priority 1
  4. What is advantage of using Wiremock as Standalone?
    • Less dependency on Environment
    • Useful for Load Testing
    • Can be used by non JVM environment
    • Can run remotely
  5. What are possible defects which could happen in application?
    1. Timeout
    2. Server Error
    3. Invalid Response

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